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A car can travel 64 mlles in two hours, 128 miles in four hours, and 192 mlles In six hours. What is the constant rate of change?
Answer:
1 hour/ 32 miles
Step-by-step explanation:
If Tori has 100 apples, and Peppa has 200, Alex had 300, and Lorenzo has 3 times the amount they did combined, How many apples does Lorenzo have?
Answer:1,800 apples
Step-by-step explanation:100+200+300 is 600 and when you multiply that times 3 you get 1,800.
Answer:
1,800.
Step-by-step explanation:
Add all of the apples together and multiply by 3.
Harriet uses 3/4 of a cup of brown sugar per batch of cookies she makes. Which graph shows the
relationship between the batches of cookies (*) and the cups of brown sugar needed (%)?
А
B
y
15
15
12
12
9
9
6
6
30
3
2
2
0
4
8 12 16
20
4 8 12 16 20
C
D
3
3
15
15
12
12
9
9
6
6
3
3
x
2
4 8 12 16 20
0
4 8 12 16 20
I NEED HELP I AM STUPID SO I DONT GET THIS HERE IS THE QUISTION 4-x-6(x+5)=15 HE ALSO SAID THIS - Students will determine whether an equation has 0, Infinite, or 1 solution, and if 1, find it. I ADDED A SCREEN SHOT OF QUISTION PLS HELP ME OR I AM FAILING THIS CLASS
Answer:
im pretty sure it has two real solutions
Step-by-step explanation:
1. simplify the equation given
(4x - 6)(x + 5) = 15
4x^2 + 20x - 6x - 30 = 15
4x^2 + 14x - 45 = 0
2. find the discriminant (b^2 - 4ac); (a = 4, b = 14, c = -45)
14^2 - (4 x 4 x -45)
196 - (-720)
916
the discriminant is positive, so this equation has 2 real solutions
to find the solutions, factor the bolded equation (if you need help factoring, let me know!)
Andrew paid for his burger with a 20% off coupon. If he paid $10 for his burger, what was the original price?
Answer:
20% off means that you subtract 20% of the price of the burger.
If the burger is $10, how much is 20% of that? If you subtract that amount, what do you get as the final price?
Step-by-step explanation:
a certain journey took 40 min to complete. if half of the distance was travelled at an average speed of 100 km/h and the other half at an average speed of 60 km/h, what was the total length of the journey
total time taken = 40 min
let x be the total length/ distance of the journey.
speed(v) = distance/ time
100= (1/2 x)/ time ---1
60= (1/2 x)/ time ---2
add 1 and 2
160= x/40
where 40 is the total time taken
44.44m/s= x/ 2400s (i converted the speed and time)
x = 106,656 metres = 106.656km
the total length is 106.656 km.
Let's assume the total length of the journey is "x" km. Since the journey took 40 minutes to complete, we first need to convert this time to hours, which is [tex]40/60 = 2/3 h[/tex] hours.
According to the information given, the first half of the journey was traveled at an average speed of 100 km/h, which means the distance covered during this time is (1/2)x km. The time taken for this is given by [tex](1/2)x / 100 = x/200[/tex] hours.
Similarly, the second half of the journey was traveled at an average speed of 60 km/h, which means the distance covered during this time is (1/2)x km.
The time taken for this is given by [tex](1/2)x / 60 = x/120[/tex]hours. Now, we can add the times taken for both halves, which gives us [tex]x/200 + x/120[/tex]hours [tex]= 2/3[/tex]hours. By solving this equation, we arrive at [tex]x = 240 km.[/tex]
Therefore, the total length of the journey is 240 km.
To know more about average speed visit:
https://brainly.com/question/17661499
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Simplify the equation given in the image
Answer:
b^20/a^12
Step-by-step explanation:
b to the power of 20 over a to the power of 12
A 4 2/4
ounce package of trail mix contains nuts and dried fruit. There are
2 3/4 ounces of nuts in the trail mix. How many ounces of dried fruit are in the trail mix
are in the trail mix?
Answer:
1 3/4 ounces of dried fruit.
Step-by-step explanation:
4 2/4 - 2 3/4 is equal to 7/4. 7/4 simplified is 1 3/4.
Clare earned a total of $12 for 2 hours of yard work. How many hours in all will it take Clare
to earn $18? Solve using unit rates.
Fast please asap thanks
Answer:
3 hours
Step-by-step explanation:
$12 = 2hours
Find how much Clare was paid for one hour
Total money earned ÷ number of hours = wage per hour
12 ÷ 2 = $6 per hour
set up equation
6x = 18
This equation says 6 dollars an hour × number of hours = $18
To solve for this equation, divide both sides by 6 (this isolates the variable)
6x ÷ 6 = 18 ÷ 6
1x = 3
x = 3
Suppose that XNY are in rational numbers such that x>y. Which of the following inequalities must be true
Answer:
D. 2x > 2y
Step-by-step explanation:
This question illustrates some of the difficulties you can run into with inequalities.
Consider each of the expressions when x = 1 and y = -2. We know that
x > y
1 > -2
__
A. x^2 = 1, y^2 = 4 . . . . x^2 > y^2 is not true
B. -x = -1, -y = 2 . . . . -x > -y is not true
C. 1/x = 1/1 = 1, 1/y = 1/-2 = -1/2 . . . . 1/x > 1/y is true
Now consider x=2, y=1. x > y because 2 > 1, but ...
1/x = 1/2, 1/y = 1 . . . . 1/x > 1/y is not true
D. We know that multiplying the numbers by 2 only stretches them apart on the number line. It does not change their order. For our example, ...
2x = 2, 2y = -4 . . . . 2 > -4 is true
D/3.5-13>-17 solve this equation
Answer:
70.5
Step-by-step explanation:
multiply the denominator 3.5 on both sides.
you get 57.5 + 13 = 70.5
A recipe says, “1 part cocoa to 4 parts sugar.” How much sugar will you need if you use 20 grams of cocoa
Answer:
80 grams
Step-by-step explanation:
because 1 part is cocoa and 4 parts sugar.
20= 1 part so all you have to do is multiply 20 by 4 and you get 80
Hope this helps!!
Answer:
80 grams
Step-by-step explanation:
4 times 20 is 80. it's like doing unit rate.
Combine Like Terms: x^2 + y^2 + 3y^2 + 4x + 2x + 2 + 2
Answer:
x^2 + 4y^2 + 6x + 4
Step-by-step explanation:
Arranging the terms;
x ^ 2 + y^2 + 3y^2 + 4x + 2x + 2 + 2
x^2 + 4y^2 + 4x + 2x + 2 + 2
x^2 + 4y^2 + 6x + 2 + 2
x^2 + 4y^2 + 6x + 4
Ted's debt is 13 less than 1/2 of mike's debt. If we let y represent mike's debt, write an algebraic expression for Ted's debt
Answer:
x = y - 13
Step-by-step explanation:
y = 1/2 of mike's debt
x = Ted's debt
x = y - 13
Which explains how to show that x= -8/3 is a root of 9x^2+48x+64= 0 ?
Step-by-step explanation:
[tex]9 {( - \frac{8}{3}) }^{} {}^{2} + 48( - \frac{8}{3} ) + 64 \\ \\ 9( - \frac{64}{9} ) - \frac{48}{3} + 64 \\ \\ - 64 - 16 + 64 = - 16[/tex]
From 2010 to 2011, the population of Queens increased by 16,075. Brooklyn’s population increased by
11,870 more than the population increase of Queens.
a. Estimate the total combined population increase of Queens and Brooklyn from 2010 to 2011.
(Round the addends to estimate.)
b. Find the actual total combined population increase of Queens and Brooklyn from 2010 to 2011.
c. Assess the reasonableness of your answer in (b). Use your estimate from (a) to explain.
Answer:
The population of Queens increased by 16,075.
The population of Brooklyn increased by 11,870 more than that, then the population of Brooklyn increased by:
16,075 + 11,870 = 27,945
a) The total combined population increase is (when we round the addens)
I will round in the thousands place.
To do it, we must look at the hundreds place, if the decimal is 5 or larger, we round up.
If the decimal is smaller than 5, we round down.
16,074 ≈ 16,000
27,945 ≈ 28,000
16,000 + 28,000 = 44,000
b) Now using the actual numbers:
16,075 + 27,945 = 44,020.
c) now let's compare our two results:
Let's see the difference between them
a = 44,000
b = 44,020
a - b = 44,000 - 44,020 = -20.
This means that our estimated from (a) is 20 units smaller than the actual number.
But this is insignificant compared with the 44,020.
Why?
we can calculate the relative error as:
100%*(estimate value - real value)/(real value)
100%*(-20/44,020) = -0.05%
So the error is on the -0.05%, which is despreciable.
From this, we can conclude that the estimation in (a) is a really good estimation.
Answer:
5
Step-by-step explanation:
no or 6
An ice cream truck vender sells 15 vanilla ice cream bars every 2 hours At this rate, how many hours does it take the vendor to sell 90 vanilla ice
cream bars?
675 hours
103 hours
T7 hours
12 hours
Answer:
12 hours
Step-by-step explanation:
15/2=7.5
90/7.5 = 12
Write an equation in slope-intercept form for the line that passes through (−2, 3) and is parallel to
the line with the equation 3x + 2y = 6.
y= (-3x+6)2
For parallel lines, slopes are the same,
y = mx + c
Substitute the values,
3 = (-3/2)(-2) + c
3=3 + c,
c = 0
Thus, the equation is y= -3/2x
Hope it helps :)
What is the slope of a line perpendicular to the line whose equation is x−3y=12. Fully reduce your answer.
Answer:
m perpendicular = - 3
Step-by-step explanation:
To start with, we need to find the slope of the given line, by solving for y in the equation
x - 3 y = 12
x = 3 y + 12
x - 12 = 3 y
divide by 3 both sides:
y = x/3 - 12/3
y = (1/3) x - 4
then, the slope of the given line is 1/3, and according to the property of perpendicular lines, a perpendicular slope will be the 'opposite of the reciprocal" of the slope of the original line. That is: the value - 3.
Then the slope of the perpendicular line is: m = - 3.
Answer:
3
Step-by-step explanation:
Which angles are coreesponding angles?
Answer:
PQN and MNL
Step-by-step explanation:
A corresponding angle is an angle that occupies the same relative position of another angle on a straight line. If they are parallel then they are corresponding.
Given x∥y and m∠2=23° . What is m∠7? WILL GIVE BRAINLIEST THANKS
Answer:
157
Step-by-step explanation:
180-23=157
Please if someone can help me
Answer:
i think it is false, true, false
Step-by-step explanation:
hope i helped!
p.s it would be cool if you gave me brainliest
Find the mean, u, for the binomial distribution which has the stated values of n and p. Round answer to the nearest tenth. n=676; p=0.7
Answer:
[tex]\mu=473.2[/tex]
Step-by-step explanation:
Binomial Distribution
The binomial distribution is commonly used to model the number of successes in a sample of size n drawn with replacement from a population of size N.
The mean value of a binomial distribution is given by:
[tex]\mu=np[/tex]
Where b is the number of trials and p is the success probability for each trial.
We need to find the mean value with parameters n=676 and p=0.7, thus:
[tex]\mu=676\cdot 0.7[/tex]
[tex]\boxed{\mu=473.2}[/tex]
Huh heyrhd Rhfhgrysamwoaj
Answer:
what ? You Must Be Real Bored Kid
Answer:
Step-by-step explanation:
welp free answers ty
Simplify.
4(1 + 8 . 9) - 6^2
Answer:
Of what grade this is question
What is the slope of the line in the graph?
Answer:
Step-by-step explanation:1,-2
How many atoms will there most likely be at the third half-life of potassium-40 in this model?
A model rock layer had 50 pennies (atoms of potassium-40).
How old is the rock layer?
Answer to both is 13 and 1.3 billion years old.
I just completed the assignment, sorry if this is late. but I hope it helps
Answer:
How many atoms will there most likely be at the third half-life of potassium-40 in this model?
✔ 13
A model rock layer had 50 pennies (atoms of potassium-40).
How old is the rock layer?
✔ 1.3 billion years old
Step-by-step explanation:
The length of rectangle is 5 centimeters less than three times its width .It’s area is 12 square centimeters. Find the dimensions of the rectangle
Answer:
14
Step-by-step explanation:
Answer: The length is 4 the width is 3
Step-by-step explanation:
Write 50,170,000,000 in scientific notation
Answer:
lrrjrklrk
krknfene
lrrjrklrk
Step-by-step explanation:
krknfene
lrrjrklrk
krknfene
Answer:
the scientific notation is
5.017E10
What multiples for 90 and adds up to -23 ?
Easy buddy...
_________________________________
Step (1)
I choose a number which is x
_________________________________
Step (2)
Multiplies by 90 :
[tex]90x[/tex]
_________________________________
Step (3)
Adds up to -23 :
[tex]90x - 23[/tex]
_________________________________
And we're done.
Thanks for watching buddy good luck.
♥️♥️♥️♥️♥️