Ask question

Ask question

All categories

3 years ago

13

rafeal counted a total of 40 white cars and yellow cars. there were 9 times as many white cars as yellow cars. how many white ca

rs did rafael count?

2 answers:

musickatia [10]3 years ago

6 0

The answer is 36 because r+9w=40 and substitute the w and r into 4 to get 36

liberstina [14]3 years ago

5 0

360 is the anwer because i multipled 40 white cars by 9 times yellow car to get answer 40×9=360

You might be interested in

The radius of a sphere is increasing at a rate of 3 mm/s. How fast is the volume increasing when the diameter is 60 mm

mina [271]

Answer:

The volume is increasing at a rate of 33929.3 cubic millimeters per second.

Step-by-step explanation:

Volume of a sphere:

The volume of a sphere of radius r is given by:

$V = \frac{4\pi r^3}{3}$

In this question:

We have to derivate V and r implicitly in function of time, so:

$\frac{dV}{dt} = 4\pi r^2\frac{dr}{dt}$

The radius of a sphere is increasing at a rate of 3 mm/s.

This means that $\frac{dr}{dt} = 3$

How fast is the volume increasing when the diameter is 60 mm?

Radius is half the diameter, so $r = 30$ . We have to find $\frac{dV}{dt}$ . So

$\frac{dV}{dt} = 4\pi r^2\frac{dr}{dt}$

$\frac{dV}{dt} = 4\pi (30)^2(3) = 33929.3$

The volume is increasing at a rate of 33929.3 cubic millimeters per second.

5 0

3 years ago

Using the following intervals for the scores on a 30-point quiz, how many x's would fall over the interval of 19-21 on a line pl

VikaD [51]

Answer:

B. 4

Step-by-step explanation:

Interval: 19-21

Scores that are between 19 and 21 are underlined:

Scores in order: <u>20, 21, 21, 21</u>, 23, 25, 26, 27, 27, 29

7 0

3 years ago

NEED HELP A family traveling home after a reunion Records the time in hours and the distance they are from home in miles based o

Marysya12 [62]

Answer:

200 miles

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What value of x is in the solution set of -5x-15>10+20x

RSB [31]

$x > \frac{5}{3}$

4 0

3 years ago

How can linear equations and functions be written and graphed? Explain how shifting the graph changes the function.

suter [353]

Linear equations are written as y = C1x + C2 where C1 & C2 are constants. They are graphed by plugging in numbers for y or x and solve for the other. For example if you have an equation y = 3x + 6 you then for y = 1 you have 1 = 3x + 6 -> x = -5/3 you then take the two coordinates (-5/3,1) and plot the point do this for further numbers and connect the points with a straight line. Shifting the graph up or down will change the value of C2 and shifting the graph left or right will change C1.

7 0

4 years ago