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3 years ago

Help me with this problem 9x-(2x+8)=. And show your work? I'll be giving BRAINILEST!

Mathematics

2 answers:

Evgen [1.6K]3 years ago

6 0

9x - 2x + 8

7x + 8 is your answer

hope this helps

kykrilka [37]3 years ago

4 0

So first, you want to open the parenthesis here.

So, to do that, first look at the symbol before the parenthesis.

In this case it's a -.

So when it's a -, reverse the symbol inside the parenthesis. (This is because if you don't you're subtracting 2x and then adding 8, when really you're subtracting both 2x and 8.)

So,

9x - 2x - 8

Or simplified,

7x - 8

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I need help please . 2nd box is multiply choose.

love history [14]

Answer:

First box = 22.5, 45/2, or 22 and 1/2

Second box = square inches (because area is always ^2, or squared)

Step-by-step explanation:

A = B * H

B = base

H = height

Base = 5 inches

Height = 4.5 inches

5 inches * 4.5 inches = 22.5 inches^2

This can also be written as 45/2 or 22 and 1/2

I hope I helped!

Let me know if you need anything else!

~ Zoe

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3 years ago

Evaluate the function f(x) =-x/2 -7x -2 find f(-9)

NeX [460]

Answer:

$f(-9)=\frac{131}{2}$

Step-by-step explanation:

In order to evaluate a function at a given x-value, plug in that value into the actual function

$f(x)=-\frac{x}{2} -7x-2\\\\f(-9)=-\frac{9}{2} -7(-9)-2\\\\f(-9) = \frac{131}{2}$

3 0

2 years ago

A circular garden has a circumference of 113 yards. Lars is digging a straight line along a diameter of the garden at a rate of

marin [14]

Answer:

Step-by-step explanation:

Circumference = $2\pi r = \pi d$ , where r is radius, and d is diameter

d=113/3.14=35.987, which is approximately 36

At 12 yards per hour, it will take 36/12=3 hours

5 0

3 years ago

There is a sale on the 3D doodler it is now only $83 It was originally $95 what percent did the 3D doodler decrease

Furkat [3]

Just divide then subtract

95/83= 1.14= move decimal to right one time so it would be 11.4 then subtract 11.4 from 95= 95-11.4= about $83.55

7 0

3 years ago

Read 2 more answers

HELP GEOMETRY PLEASE

Alexandra [31]

For each of the problems, twice the angle formed by the chords is equal to half the sum of the angles of the arcs.

So, for the first problem, we have $94 \cdot 2 = x+103$ , so $x = 188 - 103 = 85$ .

For the second, $102 \cdot 2 = x + 118$ , so $x = 204 - 118 = 86$ .

For the last problem, $106 \cdot 2 = x + 88$ , so $x = 212 - 88 = 124$ .

Feel free to comment below if you have any questions!

4 0

3 years ago