All categories

3 years ago

What is 7x+3(x-2)-4x+8

Mathematics

1 answer:

Bad White [126]3 years ago

4 0

Answer:

Step-by-step explanation:

It would b 6x+2

Mark me as brainiest pls

You might be interested in

As a motivational speaker, Bree speaks at school assemblies, charging a school

Oksi-84 [34.3K]

Answer:

<em>Bree spoke at 55 assemblies in this district.</em>

Step-by-step explanation:

Bree speaks at school assemblies charging a school district a total cost C modeled by the equation:

C(a) = 50a+1,500

Being a the number of assemblies attending the meeting.

It's given Bree charged the Escambia City School District $4,250 to speak at school assemblies.

We can find the number of assemblies by solving the equation:

50a+1,500=4,250

Subtracting 1,500:

50a=4,250-1,500=2,750

Dividing by 50;

a = 2,750 / 50=55

Bree spoke at 55 assemblies in this district.

4 0

3 years ago

What is the equation of the line through (-6, -5) and (-4, -4)?

Norma-Jean [14]

Answer:

y = 1/2x -2

Step-by-step explanation:

The 2-point form of the equation for a line is useful for answering questions like this.

y = (y2 -y1)/(x2 -x1)(x -x1) +y1 . . equation of a line through (x1, y1) and (x2, y2)

Filling in the given points, the equation becomes ...

y = (-4 -(-5))/(-4 -(-6))/(x -(-6)) -5

y = 1/2(x +6) -5

y = 1/2x -2

3 0

3 years ago

Tiffany pays 40$ for 160 minutes of talk time on her cell phone.How many minutes of talk time does she get per dollar?

jonny [76]

To find how many minutes of talk time is available per dolla, you have to divide 160 (number of minutes) by 40 (cost) 160/40 = 4 Therefore, it's 4 minutes per dollar

8 0

3 years ago

A horse might drink 50L, a sheep might drink 4L and a chicken might drink 200ML. How much water would a farm with 3 horses, 15 s

Ilia_Sergeevich [38]

50L x 3 = 150. 4L x 15 = 60. 0.2L x 12 = 2.4. 150 + 60 + 2.4 = 212.4L.

5 0

3 years ago

Cos^-1(-x)=-Cos^-1x for -1<x<1 TRUE OR FALSE?

VMariaS [17]

We are given

$cos^{-1}(-x)=-cos^{-1}(x)$

Firstly, we will simplify left side

and we will check whether it is equal to right side

Left side:

Let's assume y left side expression

$y=cos^{-1}(-x)$

now, we can take cos on both sides

$cos(y)=cos(cos^{-1}(-x))$

we can simplify it

$cos(y)=-x$

Right side:

Let's assume y left side expression

$y=-cos^{-1}(x)$

Multiply both sides by -1

$-y=cos^{-1}(x)$

now, we can take cos on both sides

$cos(-y)=cos(cos^{-1}(x))$

we can simplify it

$cos(-y)=x$

$cos(y)=x$

we can see that

both sides cos(y) value is different

so, this is FALSE.........Answer

5 0

3 years ago

Read 2 more answers