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Sindrei [870]
2 years ago
14

Solve for x -5(x-4)=-30

Mathematics
1 answer:
Naily [24]2 years ago
7 0

Answer:

-5x + 20 = -30

-5x = 10

x = -2

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Plzz help i wasted my points on this
aliya0001 [1]

1. To estimate, lets round the dimensions to 14 feet and 12 feet. Then, we calculate the perimeter as usual.

(14 + 12)2 = 26 * 2 = 52 feet as an estimate.

2. We need to write 8 and 3 inches in feet, and to do that we divide by 12, giving us 2/3 and 1/4. So, the mixed numbers are 13 2/3 feet and 12 1/4 feet. Each fraction represents the inches.

3. Using the fractions, we can find the perimeter.

(13 2/3 + 12 1/4)2 = 25 11/12 * 2 = 51 10/12 = 51 5/6 feet.

4. Our result from part 3 is pretty close to our estimate from part 1 - just 1/6 feet, or 2 inches off.

5. Now, we can just subtract the width of the doorway from our perimeter.

51 5/6 - 2 1/4 = 49 7/12 feet.

6. Finally, we divide our new perimeter by 8, and then round up.

49 7/12 / 8 ≈ 7 boards.

6 0
3 years ago
1. what is the period of the sinusoidal function?<br> Enter your answer in the box.
never [62]
Answer: 10

-----------------------------------------------------------------------------------------

Start at x = 0. When x = 0, y = 0. So (0,0) is on the curve.
Move along the curve going to the right. You'll move up and then come back down to the x axis. If you keep going, you'll go below the x axis and then come back up again. After you reach the x axis a second time, you arrive at x = 10

At this point (reaching x = 10), the curve will repeat the same motion as before. It will go up, come down to the x axis, pass the x axis to go below it, then come back up to the x axis again. 
8 0
3 years ago
The function g has an inverse. The function g − 1 determines the number of folds needed to give the folded paper a thickness of
Amanda [17]

Answer:

\mathbf{g^{-1} (t) = log _2  \ 20 \ t}

Step-by-step explanation:

Here is the full question

A standard piece of paper is 0.05 mm thick. Let's imagine taking a piece of paper and folding the paper in half multiple times. We'll assume we can make "perfect folds," where each fold makes the folded paper exactly twice as thick as before - and we can make as many folds as we want.

Write a function g that determines the thickness of the folded paper (in mm) in terms of the number folds made, n. (Notice that g(0) 0.05,)

g(n )= (05)2^n

The function g has an inverse. The function g⁻¹ determines the number of folds needed to give the folded paper a thickness of t mm. Write a function formula for g⁻¹).

<u>SOLUTION:</u>

If we represent g(n) with  t;

Then

\mathbf{t = (0.05)2^n} \\ \\ \mathbf{\dfrac{t}{0.05} = 2^n} \\ \\ \mathbf{\dfrac {100 \ t }{ 5} = 2^n} \\  \\ \mathbf{20 t = 2^n}

Taking logarithm of both sides; we have :

\mathbf{log (20 t) = n log 2}    \ \ \    \mathbf{(since  \ ,  log  \ a^b = b \ log \ a) }  \\ \\ \mathbf{n =  \dfrac{log \ 20 t }{log \ 2 }} \\ \\ \mathbf{g^{-1} (t) =  \dfrac{log \ 20 t }{log \ 2 }} \\ \\ \mathbf{g^{-1} (t) = log _2  \ 20 \ t}

4 0
3 years ago
Which set of expressions represents three consecutive integers?
Svetlanka [38]
D, as it increases by one
4 0
3 years ago
BRAINLIEST if right!
Brilliant_brown [7]
Y=-1/3x-1.
Hope this helps!
5 0
3 years ago
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