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3 years ago

Which expression is equivalent to 15 x^3 z^5/ 3 x^7 z^-5

Mathematics

1 answer:

qwelly [4]3 years ago

7 0

Answer:

15 x^3 z^5/ 3x^7 z^-5

15/3×x^(3-7)×z^(5+5)

5×x^-4×z^10

5z^10/x^4

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Bridget is making greeting cards, which she will sell by the box at an art fair. She paid $30 for a booth at the fair and the ma

LiRa [457]

Answer:

when she sold 10 cards, it will cover all her cost.

Step-by-step explanation:

Profit(without charge of booth)=5x-2x

Profit=3x-30

Calculating:

3x=30

x=10

8 0

3 years ago

The x-intercept of the line whose equation is 2x - 3y = 6 is

kati45 [8]

2x - 3y = 6
To find the x-intercept, plug zero in for y and solve.
2x - 3(0) = 6
2x = 6
divide both sides by 2
x = 3
The ordered pair is (3,0)

6 0

3 years ago

Read 2 more answers

Assume that women's heights are normally distributed with a mean given by mu equals 62.5 in, and a standard deviation given by

kirza4 [7]

Answer: a) The probability is approximately = 0.5793

b) The probability is approximately=0.8810

Step-by-step explanation:

Given : Mean : $\mu= 62.5\text{ in}$

Standard deviation : $\sigma = \text{2.5 in}$

a) The formula for z -score :

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

Sample size = 1

For x= 63 in. ,

$z=\dfrac{63-62.5}{\dfrac{2.5}{\sqrt{1}}}=0.2$

The p-value = $P(z$

$0.5792597\approx0.5793$

Thus, the probability is approximately = 0.5793

b) Sample size = 35

For x= 63 ,

$z=\dfrac{63-62.5}{\dfrac{2.5}{\sqrt{35}}}\approx1.18$

The p-value = $P(z$

$= 0.8809999\approx0.8810$

Thus , the probability is approximately=0.8810.

6 0

3 years ago

There are 22 chairs in the classroom. 7 of the chairs are wood. The rest are plastic. How many chairs are plastic

timama [110]

Answer:

Step-by-step explanation:

22-7=15

5 0

3 years ago

Find the values of x that satisfy

mr_godi [17]

Setup 2 problems
2x - 7 < 15   and    2x - 7 > -15
2x < 22                  2x > -8
x < 11                    x > -4

Or you can write it -4 < x < 11

7 0

3 years ago