Ask question

Ask question

All categories

gayaneshka [121]

3 years ago

6

6(7x-9)+15 simplify equation

2 answers:

elixir [45]3 years ago

7 0

Use distributed property first
6*7x= 42x
6*9= 54
42x-54

add it to the equation

42x-54+15

combine like terms

-54+15 = -39

42x-39 is your answer

devlian [24]3 years ago

6 0

Answer:

42x-39

Step-by-step explanation:

You might be interested in

The height of a stuntperson jumping off a building that is 20 m high is modeled by the equation h = 20 -57, where t is the time

cupoosta [38]

A stuntman jumping off a 20-m-high building is modeled by the equation h = 20 – 5t2, where t is the time in seconds. A high-speed camera is ready to film him between 15 m and 10 m above the ground. For which interval of time should the camera film him?

Answer:

$1\leq t\geq \sqrt{2}$

Step-by-step explanation:

Given:

A stuntman jumping off a 20-m-high building is modeled by the equation

$h =20-5t^{2}$ -----------(1)

A high-speed camera is ready to making film between 15 m and 10 m above the ground

when the stuntman is 15m above the ground.

height $h = 15m$

Put height value in equation 1

$15 =20-5t^{2}$

$5t^{2} =20-15$

$5t^{2} =5$

$t^{2} =1$

$t =\pm1$

We know that the time is always positive, therefore $t=1$

when the stuntman is 10m above the ground.

height $h = 10m$

Put height value in equation 1

$10 =20-5t^{2}$

$5t^{2} =20-10$

$5t^{2} =10$

$t^{2} =\frac{10}{5}$

$t^{2} =2$

$t=\pm\sqrt{2}$

$t=\sqrt{2}$

Therefore ,time interval of camera film him is $1\leq t\geq \sqrt{2}$

7 0

3 years ago

Write a function using function notation to describe each situation. Find a reasonable domain and range for each function.

sergejj [24]

F(t)= 7.00 x t + 55 A reasonable domain is (0,1,2,3). The range is ($55,$62,$69,$76)

5 0

3 years ago

Economists predict that Americans will spend $1,180 on Summer Vacation in 2015, this is up 4.8% from 2014. What did Americans sp

natta225 [31]

Answer:

$1151.4

Step-by-step explanation:

let americans spend $a in 2014

(1+4.8%)a=1180

104.8%a=1180

a=1151.4 (rounded off to the nearest tenths)

7 0

3 years ago

Which of the following is equal to (3^-3)(3^7)?<br><br> a. 3^4<br> b. 3^-4<br> c. 3^-10<br> d. 3^10

balu736 [363]

a. 3^4 which is equal to (3^-3)(3^7)

5 0

3 years ago

Solve for X and y<br> 60°<br> 14 3

lisov135 [29]

Answer:

X = 28

Y = 14

Step-by-step explanation:

+++++++++++++++++++++++++++++++++++++

4 0

2 years ago