Mathematics Middle School

My head is mush right now

Answers

Answer 1

your answer should be -24

Related Questions

Can someone please help me???

-5x+y=35
3x+2y=-21

(Use substitution method)

Answers

Answer: x= -7, y= 0
Hope this helped , if it did mark me brainliest pls!

I need points really bad man

Kyle and Melissa compare their walking rates. Kyle walks 4 feet per second and Melissa walks 2.5 feet per second.
A)Which equation represents the distance, d in feet that Kyle walks in t seconds?
B)Which equation represents the distance, d in feet that Melissa walks in t seconds?
C)How many feet can Melissa walk in 45 seconds?
D)How long will it take Kyle to walk 80 feet?
E)Which point tells you that Kyle can walk 28 feet in 7 seconds?
PLEASE HELP QUICKLY

Answers

Answer:

(a) d = 4t

(b) d = 2.5t

(d) d = 4(80) d = 320

(e) If Kyle walks 4 feet per second, then after 7 seconds he will walk 28 feet. 28 = 4(7)

please answer each one.

Disclaimer: don't do it for points

Answers

Answer:

for question 1 the answer is 1.5 cm

for question 2 the answer is 0.75 cm

for question 3 the answer is 2.3 inches

for question 4 the answer is 3.3 inches

for question 5 the answer is 4 cm

for question 6 the answer is 0.75 inches

1. Thad bought 8 notebooks that cost $3.79 each. If he gave the cashier a $50 bill, how much change did he get back from the purchase?
2.Lucy purchases a car for $16,314.40. If she makes a payment each month for the next 40 months, how much will she pay each month. (enter your answer as $dollars.cents)

Answers

Answer:

Step-by-step explanation:

1. Cost of each notebook = 3.79

Cost of 8 notebooks = 3.79 x 8 = 30.32

Amount gave to cashier = 50

Change = 50 - 30.32 = 19.68

407.86
Og. Cost - $16,314.40
Months - 40
I divided $16,314.40 by 40 and got $407.86

Lucy will pay $407.86 dollars each month for 40 months.

What does 75% mean?
What does 2 out of 5 mean?
What does 1 out of 2 mean?
If you get a 60% on a test, what was your
Score?
If you got 1 wrong on a test that had 5 questions, how did you do?

Answers

Answer:

75% means a c if you are in the U.S

Two out of five means you got a 40%

1 out of two means 50%

60% is a D

If you got 1 wrong on a test that had 5 questions you did well and it is 80 percent.

Step-by-step explanation:

80 percent of you do the math correctly.

The scatter plot shows the maximum noise level when different numbers of people are in a stadium. The linear model is given by the equation y=1.5x + 22.7 where y represents maximum noise level and x represents the number of people, in thousands, in the stadium.

1. The slope of the linear model is 1.5. What does this mean in terms of the maximum noise level and the number of people?

2. A sports announcer states that there are 65,000 fans in the stadium. Estimate the maximum noise level. Is this estimate reasonable? Explain your reasoning.

3. What is the -intercept of the linear model given? What does it mean in the context of the problem? Is this reasonable? Explain your reasoning.

Answers

Answer:

unkown

Step-by-step explanation:

Groundhog's Day is on February 2nd each year. On this day, in Punxsatawney, Pennsylvania, thousands of onlookers watch to see if Phil, the groundhog, will cast a shadow. If he does, then six more weeks of winter are predicted. If he doesn't, then an early spring is predicted. Historically, Phil's prediction has only been correct about 40% of the time.

Using complete sentences, design a simulation to determine the probability that Phil's prediction will be correct at least two out of the next three years. Make sure to explain how you would use the simulation to determine the probability.

Answers

A simulation to determine the probability that Phil's prediction will be correct at least two out of the next three years is given as follows:

Choose three numbers with replacement from the set of 0 to 9, which:

numbers from 0 to 3 representing that Phil is correct.numbers from 4 to 9 represents that Phil is incorrect.

How to calculate a probability?

The parameters that are needed to calculate a probability are given as follows:

Number of desired outcomes in the context of a problem/experiment.Number of total outcomes in the context of a problem/experiment.

Then the probability is calculated as the division of the number of desired outcomes by the number of total outcomes.

The probability of a success on a single trial is given as follows:

40% = 0.4, as Phil is correct 40% of the time.

Hence the simulation needs to have three trials, each with a 0.4 = 40% probability of a success.

Learn more about the concept of probability at brainly.com/question/24756209

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what is 6 divided by 31, 3 divided by 18. 4 divided by 75. 9 divided by 37 and 8 divided by 69. i need whole explainations for all of them!

Answers

0.19
0.16
0.005
0.24
0.11

PLZZ HELP ASAP

Which statement is true?

a. An acute triangle sometimes has a right angle.
b. A right triangle never has an obtuse angle.
C. An equilateral triangle sometimes has a right angle.
d. A quadrilateral never has an obtuse angle.

Answers

Answer:

Step-by-step explanation:

is the answer to the question

Step-by-step explanation:

It will always have angles of 60° in each corner.

Can you help me with this question about Toni

Answers

The answer is B explanation: 3/4 of an hour is 45, 45 times the amount of classes there is (8) is 360. 360 divided by how many minutes are in an hour (60) is 6 which means two hours left over for free time

It b.2 I doesn’t let me show u how to show the work :(

based on the information in the scatter plot, which statement is true?

Answers

Answer:

Step-by-step explanation:

B is the answer :))❤️

which choice best describes the relationship between the variables in the graph?

Answers

The best answer for this is D

As the temperature increases , the number of people at the bench increases

What is exponential growth factor?

The exponential growth or decay formula is given by

x ( t ) = x₀ × ( 1 + r )ⁿ

x ( t ) is the value at time t

x₀ is the initial value at time t = 0.

r is the growth rate when r>0 or decay rate when r<0, in percent

t is the time in discrete intervals and selected time units

Given data ,

Let the function be represented as f ( x )

Now , the value of f ( x ) is and exponential growth equation

where x marks the temperature and y marks the number of people on the bench

From the graph , we can see that

As the temperature increases , the number of people at the bench increases

Hence , the exponential equation is solved

To learn more about exponential growth factor click :

https://brainly.com/question/13674608

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An infant playpen is in the shape of a circle. If the playpen has a radius of 2, what is the approximate area of the playpen? Use 3.14 for pi.

a 12.56 square meters
b 6.28 square meters
c 3.14 square meters
d 10.14 square meters

Answers

Answer:

The answer is 12.566 or 12.57

Step-by-step explanation:

The formula for the area of a circle is [tex]\pi[/tex]r²

∴ 3.14×(2)² is equal to 12.566 or 12.57

Your answer is A : 12.56

Can you please help me on this ive been on this forever

Answers

Answer:

∠d , ∠f

Step-by-step explanation:

triangle ABC is similar to triangle DEF

∠A is same as angle ∠D as it is the opposite to it

∠c is same as ∠F as it is the opposite to it

How does a Double Number Line work?
By the time Joaquin was 95 years old, his heightdecrease by 20%. If he was 6 feet tall when he was 30 years old, how much height did he lose?

1) Put the numbers onto the double number line
2) Write the % sentence that represents the question
3) Find the answer to the question (Show your work!)

_% of _ is _

Answers

Answer:

4 4/5

4 4/5 = 20% 6

i dont know how to show my work XD

20% of 6 is 4 4/5

can I have brainliest please

The relation shown in the graph is not a function.
True or False

Answers

Answer:

true. it can be a function only if its exponential, trigonometric or polynomial. that graph is none of them

Does the equation y=3x+4 show a proportional relationship between x and y?

1.Yes, the graph of the equation is a straight line and passes through the origin.
2.No, the graph of the equation is not a straight line.
3.No, the graph of the equation does not pass through the origin.
4.Yes, the graph of the equation is a straight line.

Answers

Simplifying

y = 3x + 4

Reorder the terms:

y = 4 + 3x

Solving

y = 4 + 3x

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Simplifying

y = 4 + 3x

Answer:

3. No, the graph of the equation does not pass through the origin. (0,0)

Step-by-step explanation:

can some one please help meh :P

Answers

Answer:6k-4m

because it the answer

6k-4m

Combine like terms, 4k + k + k= 6k.
You cannot combine 4m and 6k because they are not like terms. You are left with 6k - 4m

Order Of operation.
12) Jennifer earns $78 per day working at a supermarket. She spends $8 each day at lunch and her gas to get to and from work is $6 per day. How much money will she earn in 28 days?

Answers

So, first let’s see how much income she makes in 28 days. To do this we multiply 78$ by 28, which gives us 2184. Now we need to calculate the total of her expenses, how much money she spends. She spends 8 dollars per day at lunch, and 6 dollars per day to and from work. So let’s add 8 plus 6, and we get 14. Now let’s multiply 14 by 28 which gives us 392. Now we subtract 2184 minus 392, and we get 1792. So our answer is 1792$

Answer:

$1792

Step-by-step explanation:

$78 x 28 = 2184

28 x $8 = 224

28 x $6 = 168

168 + 224 = 392

2184 - 392 = $1792

Check Work:

1792 + 392 = 2184

2184 / 78 or 2184 / 28

=78

whats the answer for this question?

Answers

9514 1404 393

Answer:

A. <dilation by a factor of 1/7>

Step-by-step explanation:

Rotation, reflection, and translation are "rigid" motions that preserve congruence.

Dilation does not preserve congruence. Dilation multiplies the coordinates by a dilation factor, as in the transformation of choice A.

(x, y) ⇒ (x/7, y/7) . . . does NOT preserve congruence

Jdjdjd dodidid djdjdjd

Which of the following conditions does NOT create a triangle?
A.side lengths of 2 in, 4 in, and 7 in
B.angle measures of 33º, 58º, and 89º
C.two acute angles and one obtuse angle
D.three sides with a measure of 3 cm each

Answers

Answer:

A triangle with three angles that each measure between 0º and 90º.

A triangle with one angle that measures between 90º and 180º.

A triangle containing a right angle.

the answer to this question is C

I'LL GIVE BRAINLIEST:

Answers

Answer:

Step-by-step explanation:

Find the constant of proportionality for each graph. Write your answer as y-kx.

Answers

Answer:

1. y=5x

2. y=9x

3.y=2x

4.y=3x

Solve these 4 questions. Please show your work. Worth 20 points.

Answers

Ok so a triangle normally equals 180, since the two sides are congruent it would be 75+75=150 which means x=30 OR 65+65=130 which means X=50. Maybe.

An airplane leaves New York to fly to Los Angeles. It travels 3,850 km in 5.5 hours. What is the velocity of the airplane?

whats yall's tiktok? if you have it

Answers

Answer:

the average speed is 700 km/hour

Step-by-step explanation:

Answer:

I think that it would be 700 km/hour

Step-by-step explanation:

Find the quotient. Enter your answer in simplest form.
− 1/8 / − 2/7=

Answers

Answer:

7/16

Step-by-step explanation:

-1/8 ÷ -2/7

~Copy Dot Flip

-1/8 * -7/2

~Multiply

7/16

Best of Luck!

Find the number of revolutions made by a wheel with a radius of 5 ft that traveled 633 ft. Use 3.14 for pi. Round your answer to the nearest tenth of a revolution.
A)40.3 revolutions

B)8.1 revolutions

C)19,876.2 revolutions

D)20.2 revolutions

Answers

Answer:

Step-by-step explanation:

1) convert ft to cm

5ft=152.4cm

633ft=19293.84cm

2) 2*3.14*152.4=975.072

3)19293.84/975.072 = 20.16rev

The answer is 20.2 revolutions! The answer is D

Hi can you please help me with this quickly, i don't want to fail

Answers

the last choice is the answer. y=-3x

Answer:

The correct answer is D.) Y= -3x

Step-by-step explanation:

What is
9 - 3 divided by 1/3 + 1 =

Need it ASAP

Answers

Answer:

0.9999

Step-by-step explana

Answer:

4.5 or 1

Step-by-step explanation:

(9-3)/(1/3+1) = 6/(4/3) = 4.5

but, if:

9 - 3/(1/3) + 1, then

9-9+1 = 1

parentheses can be your friend

Which equation has exactly one solution?

Answers

Answer:

true

Step-by-step explanation:

Answer:

the top right one

Step-by-step explanation:

x would equal 2z

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