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mart [117]
2 years ago
12

A gyms membership in 2010 was 8,700. Now is 6400 what is an expression that equals the percent of change

Mathematics
2 answers:
Alexxandr [17]2 years ago
7 0
Percent of change = (new value - old value)/(old value) * 100

percent of change = (6400 - 8700)/(8700) * 100
sladkih [1.3K]2 years ago
4 0
8700-6400  divided by 8700 multiplied by 100
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Rewrite subtraction as an equivalent addition expression.<br><br> 5(x – 4) + 3x – 9x + 7
iogann1982 [59]

Hello!

Explanation:

Distributive property: → a(b+c)=ab+ac

Expand the form equation.

5(x-4)=5x-20

5x-20+3x-9x+7

Then, simplify by equation or expand.

5x-20+3x-9x+7=-x-13

Final answer is: → \boxed{=-x-13}

<u><em>*The answer must have a negative sign.*</em></u>

Hope this helps!

Thank you :)

-Charlie

Have a great day! :)

3 0
3 years ago
Annie estimates that the height of a bookcase is 78.25 in. The actual height is 75.50 in. To the nearest tenth of a percent, wha
Vinil7 [7]

Answer  

Find out the  percent error in Annie's estimate .

To prove

Formula

Percentage\ error = \frac{error\times 100}{exact\ value}

As  error = approx value -  exact value

As given

Annie estimates that the height of a bookcase is 78.25 in.

The actual height is 75.50 in.

approx value = 78.25 in.

actual value = 75.50 in.

error = 78 .25 - 75 .50

        = 2.75

put in the formula

Percentage\ error = \frac{2.75\times 100}{75.50}

Percentage\ error = \frac{27500}{7550}

Percentage error = 3.64 % (approx)

Therefore the Percentage error be 3.64 % (approx).

6 0
3 years ago
Read 2 more answers
4 - x + <img src="https://tex.z-dn.net/?f=6%5E%7B2%7D" id="TexFormula1" title="6^{2}" alt="6^{2}" align="absmiddle" class="latex
Lemur [1.5K]

Answer:

x ≤ 19

Step-by-step explanation:

The instructions here are probably "solve for x."  Please include them.

4 - x + 6^2 ≥  21

becomes 4 - x + 36 ≥  21

Now combine like terms.  4 and 36 combine to 40:  40 - x ≥ 21, and so:

19 - x ≥ 0

Adding x to both sies results in

x ≤ 19

Please, include the instructions when you post a question.  Thanks.

3 0
2 years ago
If 49x2 + 28x - 10 is rewritten as p2 + 4p -10, what is p in terms of<br> p=
madam [21]

Answer:

p=7x

Step-by-step explanation:

49x^[2] + 28x - 10 = p^[2] + 4p -10

This equation is in the form a^[2]x + bx + c.

<u><em>The 'c' is common for both equations, this means the 'a' and 'b' must also be common. </em></u>

There are two ways to find p: 'a' or 'b'

<u>a method</u>

49x^[2] = p^[2]

=> The square root of both sides = 7x = p

<u>b method</u>

28x = 4p

28x/4 = 4p/4

7x = p

6 0
3 years ago
Write in slope-intercept form an equation of the line that passes through the point (3,−5) with slope −4.
marishachu [46]

Answer:

y=-4x+7

Step-by-step explanation:

You put the points on a graph in desmos and then in a new line put the y=-4x+ and Playa round with numbers until you hit the point

8 0
3 years ago
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