All categories

3 years ago

You and your friend skate at the same rate.You complete 5 laps in 7 minutes.How long does your friend take to complete 15 laps?

Mathematics

1 answer:

gogolik [260]3 years ago

6 0

Answer:

21minutes

Step-by-step explanation:

its 21 minutes because 5x3=15 so 7x3=21

You might be interested in

What is the slope of the line passing through the points (-2, 6) and (1, -3)

8090 [49]

Answer:

slope is -3

Step-by-step explanation:

use slope equation, shown in picture hope this helps

5 0

4 years ago

Read 2 more answers

Dok = (2,4) – (8,16)

sashaice [31]

this is slope right?

3 0

3 years ago

What is the common difference of the sequence below?

Tom [10]

Answer should be 5,6,8 if that is an answer choice

3 0

3 years ago

Read 2 more answers

Can someone please help me with 9 and 10

padilas [110]

Answer:for number one its q and r and then its w,x,y for the second one

Step-by-step explanation:

hope its helps

7 0

3 years ago

Find f. (Use C for the constant of the first antiderivative and D for the constant of the second antiderivative. f"(x) = 2x + 9e

ad-work [718]

Answer:

$f(x)=\frac{x^3}{3}+9e^x+Cx+D$

Step-by-step explanation:

The function F(x) is an antiderivative of the function f(x) on an interval I if

F′(x) = f(x) for all x in I.

The function F(x) + C is the General Antiderivative of the function f(x) on an interval I if F′(x) = f(x) for all x in I and C is an arbitrary constant.

The Indefinite Integral of f(x) is the General Antiderivative of f(x).

$\int {f(x)} \, dx =F(x)+C$

To find the first antiderivative you must integrate the function $f''(x) = 2x + 9e^x$

$f'(x)=\int { 2x + 9e^x} \, dx \\\\\mathrm{Apply\:the\:Sum\:Rule}:\quad \int f\left(x\right)\pm g\left(x\right)dx=\int f\left(x\right)dx\pm \int g\left(x\right)dx\\\\\int \:2xdx+\int \:9e^xdx = x^2+9e^x\\\\\mathrm{Add\:a\:constant\:to\:the\:solution}\\\\x^2+9e^x+C$

To find the second antiderivative you must integrate the function $f'(x) =x^2+9e^x+C$

$f(x)=\int {x^2+9e^x+C} \, dx\\\\\mathrm{Apply\:the\:Sum\:Rule}:\quad \int f\left(x\right)\pm g\left(x\right)dx=\int f\left(x\right)dx\pm \int g\left(x\right)dx\\\\\int \:x^2dx+\int \:9e^xdx+\int \:Cdx= \frac{x^3}{3}+9e^x+Cx\\\\\mathrm{Add\:a\:constant\:to\:the\:solution}\\\\\frac{x^3}{3}+9e^x+Cx+D$

Therefore,

$f(x)=\frac{x^3}{3}+9e^x+Cx+D$

8 0

3 years ago