12-(4) - 1
2

Please helppp!!! :)

12-(4) - 12Please Helppp!!! :)

Answers

Answer 1

Answer:

17

Step-by-step explanation:

Simplify:

[tex]12\frac{1}{2} = \frac{25}{2}[/tex]  

[tex]-4\frac{1}{2} = \frac{-9}{2}[/tex]

[tex]\frac{25}{2} - (\frac{-9}{2} ) = \frac{25}{2} + \frac{9}{2} = \frac{34}{2} = 17[/tex]

When you have a subtraction sign next to a negative number, the negative number will turn positive since it's understood as -1 multiplied by the number when it's a negative number.  


Related Questions

Tarun has a few balloons with him. The number of balloons he has is MORE than 15 but LESS than 20. He gives 5 of them to Sia. What could be the number of balloons LEFT with Tarun

Answers

Answer:

No. of balloons left with Tarun is MORE than 10

but LESS than 15.

10 < No. of balloons left with Tarun  <15

Step-by-step explanation:

this is problem of inequality . first we will try to write the existing condition in inequality form then apply other situation as given in the problem.

___________________________________________________

let the no . of balloons with Tarun be x

Given  he has is MORE than 15 balloons

thus, in equality it can be represented as

x > 15

he has LESS than 20 balloons

x < 20

combining both we have

15   < x < 20

now he gives 5 of them to sia

so we have to subtract 5 from inequality

he has left with him x-5 , let x-5 be y

thus,

subtracting 5 from each part of inequality

15  -5 < x-5 < 20 -5

10 < x-5 < 15

10 < y <15

Thus, No. of balloons left with Tarun is MORE than 10

but LESS than 15.

a store makes a profit of $1000 in January. in February the sales are up 25%, but in March the profit is down 25%. The manager says the profit for the march is still $1000. What is his error? What is the actual profit for the march?

Answers

Answer:

The profit is 937.50$ The manager subtracted 25% from januarary's profit not march's.

Step-by-step explanation:

1000 times 25% is 1250 - 25% = 937.50

Answer:

Step-by-step explanation:

The profit is 937.50$ The manager subtracted 25% from januarary's profit, not march's.

Step-by-step explanation:

1000 times 25% is 1250 - 25% = 937.50

What is the answer to this problem 30 + (16/2)

Answers

Answer:

Brainliest!

Step-by-step explanation:

30+8

=38

16/2 = 8

Answer:

38

Step-by-step explanation:

16/2 = 8

30 + 8 = 38

An autonomous car is programmed to travel forty kilometers at an average speed of 40 km/hr. During the first 20 km, an average speed of 40 km/hr is maintained. During the next ten kilometers, however, the car averages only twenty km/hr. To drive the remaining ten kilometers and average 40 km/hr, the autonomous car must drive

Answers

Answer:

To cover the remaining ten kilometres and average 40 km/hr, the autonomous car must drive at infinite speed (light speed)

Step-by-step explanation:

The average speed = (The total distance)/(The total time taken)

The given parameters are;

The required average speed of the autonomous car = 40 km/hr

The average speed of the car during the first 20 km = 40 km/hr

The  average speed of the car during the next 10 km = 20 km/hr

Therefore, we have;

The time taken = Distance/Speed

The time taken by the car during the first 20 km = 20 km/40 km/hr = 0.5 hour

The time taken by the car during the next 10 km = 10 km/20 km/hr = 0.5 hour

Therefore, the amount of time elapsed = 0.5 hour + 0.5 hour = 1 hour

The distance covered = 30 km

Which gives;

To drive the remaining distance of 10 km the car has 0 hour left,

The speed of the remaining 10 km must therefore be 10/0 =  Infinite (speed).

To cover the remaining ten kilometres and average 40 km/hr, the autonomous car must drive at infinite speed.

Explain how u can decide where to place the first digit of the answer for 6,139 / 153

Answers

Answer:

The first digit would go in the tens place.

Step-by-step explanation:

First we estimate the approximate numbers. For 6130 we estimate 6000 and for 153 we estimate almost 150.

So dividing 6000 by 150 would give 40 .

The four would go in the ten's place .

Now check by dividing

         40.1     So the answer is correct. The quotient is 40.12.

[tex]153\sqrt{6139}[/tex]

      612

           190

           153

             37

The first digit would go in the tens place.

The answer is justified. We can easily decide where to place the first digit.

Step-by-step explanation:

explain how you can decide where to place the first diget in the quotiont for 6,139÷135

Solve the equation
(please show work if possible)

Answers

Answer:

-10

Step-by-step explanation:

imma be honest all i do is put in different numbers until it is right. But the way to do it is subract 2 by puting it under the negative 3 and you get -5. then multiply the 2 by putting it under the -5. you get -10. and the answer will read r = -10. Therefore r is -10

Answer:

I’m sorry I thought I saw a positive 3, The correct answer would be -10.

graph: y-3= 1/2(x+2)

Answers

Answer:

slope: 1/2

y-intercept: 4

I will Give BRAINLIEST!!!!!!!!

Answers

Answer:

2nd and 4th

Step-by-step explanation:

16.50÷6=2.75

So the second one is true.

12x2.75=33

So the fourth one is true.

Answer:

The first and fourth statements are true.

Step-by-step explanation:

We know that 6 pounds of blueberries costs $16.50 so 1 pound costs 16.5 / 6 = $2.75. Therefore, the first statement is true. The second statement can't be true because this is a direct proportion. In a direct proportion, when one variable increases, the other increases as well so the price of 2.75 pounds can't be less than the price of 1 pound. The cost of 5 pounds is 2.75 * 5 = 13.75 so the third statement is false. The cost of 12 pounds will be 2.75 * 12 = 33 so the fourth statement is true. The cost of 3 pounds is 2.75 * 3 = 8.25 so the fifth statement is false.

A car is at a distance s, in miles from its starting point in t hours, given by s(t)=10t^2. Find s(2) and s(5). Find s(5)-s(2). What does this represent? Find the average rate of change from t=2 to t=5. This is the average velocity

Answers

Answer:

Average Velocity= 70 miles per hour

Step-by-step explanation:

Distance= s

Time = t

s(t)=10t^2

Putting the values

s(2) = 10 (2)^2= 10&4

s= 40

s(5) = 10 (5)^2 = 10*25

S(5)= 250

The average velocity is defined as the rate of change of speed in unit time.

So

Speed= distance/time

Velocity = Speed in a definite direction

Average Velocity= Displacement/ Time

Average Velocity= Change in distance/ Change in time

s(5) - s(2)/ t(5)- t(2)

= 250-40/5-2= 210/3= 70 miles per hour

A large ice cream distributor wants to analyze the effect of season (winter, spring, summer, fall) on daily ice cream sales in dollars. How many independent variables does the manufacturer need to include in the multiple regression model?

Answers

Answer:

4

Step-by-step explanation:

The independent variable is the variable used to explain the dependent variable.

The researcher wants to know how the seasons (independent variable) affects ice cream sales (dependent variable).

The researcher would regress ice cream sales against each season. There are four seasons, so the independent variable would be four

There are four activities on the critical path, and they have standard deviations of 1, 2, 4, and 2 days. The standard deviation of the critical path is

Answers

Answer:

The standard deviation of the critical path = 5

Step-by-step explanation:

The formula for the standard deviation of a critical path is given as:

Standard deviation of a path

=√(sum of variances of activities on path)

Variance = (Standard deviation)²

In the above question, we are given:

Standard deviation of 1, 2, 4 and 2 days

Standard deviation of a critical path

=√(sum of variances of activities on path)

= √1² + 2² + 4² + 2²

= √1 + 4 + 16 + 4

= √25

= 5

On the number line above, points J, K, L, and M are integers, and JK:KL:KM = 2:1:3. What is the value of KM? number line shown below

Answers

Answer:

F. 12

Step-by-step explanation:

The distance between A and M i.e JM = M - J = 5-(-19)

JM = 5+19

JM = 24

If JK:KL:KM = 2:1:3

The total ratio = 2+1+3

Total ratio = 6

Dividing each length based on ratio

length JK = 2/6 * JM

JK = 1/3 * 24

JK = 8

length KL = 1/6 * JM

KL = 1/6 * 24

KL = 4

length KM = 3/6 * JM

KM = 1/2 * 24

KM = 12

Hence the value of KM is 12

-ax-20=-14
solve the equation

Answers

-ax-20=-14
add 20 to both sides
-ax=6

6х + Зу = 12
solve for y ​

Answers

Answer:

3.

Step-by-step explanation:

Rearrange to make it easier:  6*x+3*y-(12)=0

Find like factors and eliminate them: 6x + 3y - 12  =   3 x (2x + y - 4)

So then you get 3 = 0. So y would be 3.

12. Rice is sold in 75 gram packs and 120 gram packs.
The masses of both packs are given correct to the nearest gram.
Calculate the lower bound for the difference in mass between the two packs.

Answers

Answer:

44g

Step-by-step explanation:

Rice is sold in 75-gram packs and 120-gram packs.

74.5  to  75.5                               119.5 to 120.5

 

lowest possible difference = 119.5 - 75.5 = 120-75-1 = 44g

Which fractions are equal to 2/3 ? Check all that are true. 1/3 6/9 4/6 1/6 3/2

Answers

Step-by-step explanation:

2/3=4/6=6/9

your answer is 4/6,6/9

explanation

(2/3)×2=4/6

therefore 4/6 is a multiple of 2/3

(2/3)×3=6/9

therefore 6/9 is a multiple

if we comprise 4/6 & 6/9 we get 2/3

(b) 6/9 and (c) 4/6 are equivalent to 2/3

The fraction is given as:

[tex]\mathbf{Fraction = \frac 23}[/tex]

The equivalent fractions are 6/9 and 4/6, because they can be reduced to 2/3.

The proof is as follows

[tex]\mathbf{Fraction = \frac 69}[/tex]

Divide the numerator and the denominator by 3

[tex]\mathbf{Fraction = \frac{6/3}{9/3}}[/tex]

[tex]\mathbf{Fraction = \frac{2}{3}}[/tex]

Also, we have:

[tex]\mathbf{Fraction = \frac 46}[/tex]

Divide the numerator and the denominator by 2

[tex]\mathbf{Fraction = \frac 23}[/tex]

Hence, 6/9 and 4/6 are equivalent to 2/3

Read more about equivalent fractions at:

https://brainly.com/question/17912

in the figure on the right, the lenght of the segment A must be x + 3, the length of segment B must be x +2, and the length of segment C must be x + 1. the perimeter of the triangle is 30cm. equate the sum of the lengths of the segments to 30 and solve for x

Answers

Answer:

x=8

Step-by-step explanation:

A= x+3

B= x+2

C= x+1

A+B+C=30

[tex]x+3+x+2+x+1=30\\3x+6=30\\3x=30-6\\3x=24\\x=\frac{24}{3}\\x=8[/tex]

ANS: X=8

In the following questions, look at different ways to represent the relation given by the equation y = x2 - 1. The table below shows some values for the given equation. Find the values of a and b.

Answers

Question: In the following questions, look at different ways to represent the relation given by the equation y = x2 - 1. The table below shows some values for the given equation. Find the values of a and b.

Answer:

a= 3

b= 0

The value of a and be will be three and zero respectively.

What is an equation?

The equation in mathematics is the relationship between the variables and the number and establishes the relationship between the two or more variables.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

We are given the quadratic equation as;

y = x² - 1

From the given table;

At x = -2, y =  (-2)² - 1 = 3

At x = -1, y = 0

At x = 0, y = -1

At x = 1, y = 0

Now, from the values above, we can say that the first graph is the correct one that shows some values for the given equation.

Therefore, values of a and be will be three and zero respectively.

The complete question is given below:-

In the following questions, look at different ways to represent the relation given by the

equation y = x2 - 1.

The table below shows some values for the given equation. Find the values of a and b.

a =

b =

The table is attached with the answer.

Read more about Quadratic Function Graphs at; brainly.com/question/1523847

#SPJ5

Helppppppppp please !!!

Answers

Answer:

Hey there!

Rhianna has 1/2 of a box of pencils left after using some at school.

The bottom two boxes would be 3÷3=1.

Let me know if this helps :)

Answer:

2

Step-by-step explanation:

There are 6 spaces and three are shaded

= [tex]6\div 3 = 2\\[/tex]

If $1205 is borrowed for 11 years at an annual simple interest rate of 11.3%, what is the total
amount that must be repaid rounded to the nearest cent

Answers

Answer:

$2,702.82

Step-by-step explanation:

The formula for simple interest is

I = Prt

where

I = interest amount

P = amount invested (the principal)

r = annual rate of interest

t = time in years

11.3% = 0.113 as a decimal

Now we use the formula to find the amount of interest earned.

I = $1,205 * 0.113 * 11

I = $1,497.82

The interest amount is $1,497.82.

Now we add the earned interest to the principal amount.

$1,205 + $1,497.82 = $2,702.82

A particle is moving along a projectile path at an initial height of 160 feet with an initial speed of 144 feet per second. This can be represented by the function H(t) = −16t2 + 144t + 160. What is the maximum height of the particle?

Answers

Answer:

The maximum height of the particle is 484 m.

Step-by-step explanation:

Given that,

A particle is moving along a projectile path at an initial height of 160 feet with an initial speed of 144 feet per second. This can be represented by the function :

[tex]H(t) = -16t^2 + 144t + 160[/tex] ....(1)

We need to find the maximum height of the particle. For maximum height put [tex]\dfrac{dH}{dt}=0[/tex]

So,

[tex]\dfrac{d(-16t^2+144t+160)}{dt}=0\\\\-32t+144=0\\\\t=4.5\ s[/tex]

Put t = 4.5 s in equation (1) as :

[tex]H(t) = -16(4.5)^2 + 144(4.5)+ 160\\\\H(t)=484\ m[/tex]

So, the maximum height of the particle is 484 m.

Answer:

484 feet

Step-by-step explanation:

First, look at H(t) = −16t^2 + 144t + 160 as ax^2 + bx + c

Second, write out a=, b=, c=, which are a=-16, b=144, c=160

Third, plug a, b, & c into the equation for vertex which is t= -b/(2a) or t=-144/[2*(-16)], t=4.5.

Fourth, plug t=4.5 into the original equation H(t) = −16t^2 + 144t + 160, so H(4.5)=−16((4.5)^2) + 144(4.5) + 160 = -324 + 648 +160 = 484 feet

The Article states:
Jim LeBrecht is a former Jened camper. He uses a wheelchair because he has
spina bifida. In a documentary about the camp, LeBrecht described the frustration
he felt as a teen: "I wanted to be part of the world, but I didn't see anyone like me in
it."
Which is the closest antonym for the word former?
A traditional
B
skillful
с
patient
D
current

Answers

Answer: D) current

"Former" means "past", more or less. So he used to be a camper.

Antonym means the opposite.

I would say "future" is more opposite than "past", but "current" works as well too.

Plz help ASAP!!!!!! Will mark brainliest

Answers

Answer:

D. 180cubic cm

Step-by-step explanation:

volume=h*w*L

V=6*5*6

v=180

5. What is the slope of the line that passes through (-2, 4) and (7, 1)?
-9/5
-1/3
3
5/9​

Answers

Answer:

Slope: [tex]-\frac{1}{3}[/tex]

Step-by-step explanation:

Step 1:  Use slope formula to find the slope

[tex]m = \frac{y2 - y1}{x2- x1}=\frac{4-1}{-2-7}=\frac{3}{-9} =-\frac{1}{3}[/tex]

Therefore the slope of a line that passes through (-2, 4) and (7, 1) is [tex]-\frac{1}{3}[/tex]

Which of the following graphs represent functions Circle your answers. If it is a function, state the domain
and range. If the graph is not included, make a table and graph the function by hand.

Answers

Answer:

Step-by-step explanation:

A). y = |2x - 3| + 1

  Domain of function is defined by the x-values (Input values) and Range by the y-values(Output values).

  From the graph,

  Domain : (-∞, ∞)

  Range : [1, ∞)

B). Table of the input-output values of the function,

  y = x² - 2x + 1

  x         -2         -1           0         1          2

  y          9          4           1         0          1

 By graphing the function as attached,

 Domain of the function : (-∞, ∞)

 Range of the function : [0, ∞)

C). x² + y² = 3²

 Domain of the function : [-3, 3]

 Range of the function : [-3, 3]

D). x = 5

 Domain of the line : [5, 5]

 Range of the line : (-∞, ∞)

Plzzzzz help will give brain and points!!! Explain why a quadratic equation with a positive discriminant has two real solutions, And why a quadratic equation with a negative discriminant has no real solution, And a quadratic equation with a discriminant of zero has one real solution.

Answers

Answer:

The given equation is -2x^2 = -8x + 8

This can be rewritten as 2x^2 - 8x + 8 = 0

Here the value of a =2, b = -8 and c = 8

Discriminant = b^2 - 4ac

Now plug in the above values in the discriminant, we get

= (-8)^2 - 4*2*8

= 64 - 64

= 0

Here the discriminant is 0, so we will get one real root.

The discriminant is equal to 0, which means the equation has one real number solution.

Hope this will helpful.

Thank you.

order the following from least to greatest: 2/5, 6%, 6, -5/4, 0, 25%​

Answers

Answer:

-5/4 0 6% 2/5 25% 6

Step-by-step explanation:

converting all to decimal -

.4, .06, 6, -1.25, 0, .25

Ok so we need to turn these all into the same type of number.

I'm going to turn it into decimals.

2/5 = 4/10 = 40/100 = 0.40

6%=0.06

6=6.00

-5/4 = -125/100 = -1.25

0 = 0.0

25% = 0.25

So now we order from least to greatest.

0.4, 0.06, 6, -1.25, 0, 0.25

Since -1.25 is a negative number, it goes first.

All of them except for -1.25 and 0 are positive numbers so 0 goes next.

Now you could ignore the decimal point; 40, 6, 600, 25

From least to greatest it is; 6, 25, 40, 600

So the final order from least to greatest is; -1.25, 0, 0.06, 0.25, 0.4, 6

Or; -5/4, 0, 6%, 25%, 2/5, 6

♡ Hope this helped! ♡

❀ 0ranges ❀

5 5/6+(-1/6)+2 2/3+(-2 2/3)

Answers

Answer:

17/3  or  5 2/3  or 5.6 repeating

Step-by-step explanation:

z

Answer:

5(5/6)+(-1/6)+2(2/3)+(-2)(2/3)

(35/6)-(1/6)+(8/3)-(8/3)

find the least common multiple which is 3

therefore 70-3+16-16

the answer is 67

For the given function, identify the x- and y-intercepts if any, the vertex, the axis of symmetry, and the maximum or minimum value. f(x)=−x2+25 A) There are no x-intercepts. The y-intercept is (0,25). The vertex is (0,25). The axis of symmetry is y=0. The maximum value of the function is 25. B) The x-intercepts are (−5,0) and (5,0). The y-intercept is (0,25). The vertex is (0,25). The axis of symmetry is x=0. The maximum value of the function is 25. C) The x-intercepts are (−5,0) and (5,0). The y-intercept is (0,−25). The vertex is (0,−25). The axis of symmetry is x=0. The minimum value of the function is −25. D) The x-intercepts are (−25,0) and (25,0). The y-intercept is (0,5). The vertex is (0,5). The axis of symmetry is x=0. The maximum value of the function is 5.

Answers

Answer:

B) The x-intercepts are (−5,0) and (5,0). The y-intercept is (0,25). The vertex is (0,25). The axis of symmetry is x=0. The maximum value of the function is 25.

Step-by-step explanation:

Given that the function is:

[tex]y=f(x)=-x^2+25[/tex]

It is quadratic equation, therefore we can observe that it is a parabola.

The coefficient of [tex]x^{2}[/tex] is negative, therefore it opens downwards.

That means it will have a maximum value.

This maximum value is at the vertex and where x = 0.

Also, vertex is at x intercept.

x intercept is the value of x where we have y = 0 and

y intercept is the value of y where we have x = 0

So, let us put y = 0 first.

[tex]0=-x^2+25\\ \Rightarrow x^{2} =25\\\Rightarrow x =5, -5[/tex]

Therefore x intercepts are at (5, 0) and (-5, 0)

Now, let us put x = 0,

[tex]y=0+25\\\Rightarrow y =25[/tex]

Therefore y intercept is at (0, 25).

It is the point of maximum value (which is 25) and vertex of parabola as explained above.

Kindly refer to the attached image for the graph of given function.

Therefore, correct option is:

B) The x-intercepts are (−5,0) and (5,0). The y-intercept is (0,25). The vertex is (0,25). The axis of symmetry is x=0. The maximum value of the function is 25.

Answer:

Vertex = (3,–4), y-intercept = (0,5), x-intercepts = (1,0) and (5,0), axis of symmetry is x = 3

Step-by-step explanation:

PLZ HELP HURRY PLZ Below are the data collected from two random samples of 100 members of a large travel club regarding the type of vacation they prefer: Which of the following inferences can be made based on the data? Most members prefer a beach vacation. Most members prefer a adventure vacation. More members prefer an adventure vacation and a ski vacation than a cruise vacation. More members prefer a beach vacation and ski vacation than an adventure vacation.

Answers

Answer: Choice D)

More members prefer a beach vacation and ski vacation than an adventure vacation.

======================================================

Explanation:

Let's go through the four answer choices to see which one is true.

Choice A is false because most members prefer a cruise, as 70+72 = 142 is the largest column sum. Choice B is false for the same reasoning as choice A.Choice C is false. We have 6+1 = 7 people who prefer adventure and 19+21 = 40 who prefer to ski, giving 7+40 = 47 people who prefer either. But this is nowhere near 142 we found back in choice A above. So more people prefer a cruise than the combined amount for adventure and ski.Choice D is true. Adding the column totals for "beach" and "ski" gives (5+6)+(19+21) = 11+40 = 51, and this exceeds the column total of "adventure (6+1 = 7).
Other Questions
She said, Could you write that down for me?. (change into indirect speech) * Several lawyers accompanied him Change into voice name the factors,which affect photosynthesis? In a Young's double-slit experiment, light of wavelength 500 nm illuminates two slits which are separated by 1 mm. The separation between adjacent bright fringes on a screen 5 m from the slits is: CONVERT FIRST Write 34/9 as a decimal when sodium metal is treated with water we get gas which is absorbed by palladium metal is ? A study was conducted on the relationship between speeds of cars and gas mileage. The correlation coefficient was 0.45. Later, the researchers found the speedometers read 5 mph too high. Researchers recomputed the coefficient. The new value will be:__________. a) 0.40 b) 0.50 c) 0.45 A local electronics store is offering a $200.00 rebate along with a 20% discount. Let x represent the original price of an item in the store. Find the composite function (D R)(x) Group of answer choices 200 0.8x 0.8x (0.8x 80) 0.8x 200 0.8x - 80 I tried different ways of doing the equation but I still didn't get a correct answer Place the following Spanish expeditions in chronological order according to the yearthey began:Juan de OateFrancisco Vazquez de CoronadoHernando de Soto A glass of milk has a [H+]=1106. What is the pH of this milk? Is this milk an acidic or a basic solution? It costs Doug $30 to set up a cupcake stand. He charges $2 for every cupcake he sells. If Doug makes $48 of profit in one day, how many cupcakes does he sell? 14 cupcakes 24 cupcakes 12 cupcakes 39 cupcakes D-Day, code named Operation Overlord, can best be described as Stephen and Aaron solved the same equation using two separate methods Why would admitting a mistake be disastrous for law enforcement? Is there a way to fix this?Its for my lit class A new television set was recently purchased for the commons room in a residence hall for $469.20 including tax. If the tax rate is 2% find the price of the television set before taxes . Read the following poem and answer the question that follows. "I Like to See it Lap the Miles" by Emily Dickinson I like to see it lap the miles, And lick the valleys up, And stop to feed itself at tanks; And then, prodigious, step Around a pile of mountains, And, supercilious, peer In shanties by the sides of roads; And then a quarry pare To fit its sides, and crawl between, Complaining all the while In horrid, hooting stanza; Then chase itself down hill And neigh like Boanerges; Then, punctual as a star, Stop-docile and omnipotent- At its own stable door. This poem describes a train as if it were a horse. Which lines uses imagery to describe the train arriving at the station for the night? (10 points) "And stop to feed itself at tanks" "At its own stable door." "Complaining all the while" "Then, punctual as a star," Evaluate 8 2/9 - 7 1/6 please help I need it urgently to make his special drink, jerome uses 8 cups of water and 3 cups of drink mix. what is the ratio of water to drink mix?