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vredina [299]
4 years ago
11

I need to know how to solve number 13 please

Mathematics
1 answer:
azamat4 years ago
3 0
(p-8)(p+5)

.......................................
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What 21 divided by 21​
Volgvan
The correct answer is 1. Hope this helps!!
5 0
4 years ago
Read 2 more answers
Which lines of A, B, and C are perpendicular?
g100num [7]

Answer:

a is perpendicular to both b and c; the product of the slopes a and b or a and c is -1

Step-by-step explanation:

perpendicular slopes multiplied by each other would be -1

-1/3 * 3 for a and both other lines is -1

that means a is perpendicular to both b and c

4 0
3 years ago
Small sample: During an economic downturn, companies were sampled and asked whether they were planning to increase their workfor
leva [86]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The confidence level interval is  0.016 \le C \le 0.404

Step-by-step explanation:

The sample size is  n =  20

The number planning to increase workforce is  x =  3

 The confidence level is  c  = 98%

The value of proportion for a plus 4 method is

      p = \frac{x+2}{n+4}

substituting values

      p = \frac{3+2}{20+4}

       p =0.21

The z-critical value at confidence level of 98% is

     z_{c}=z_{0.98} =  2.33

This values is obtained from the standard normal table

The confidence level interval can be mathematically represented as

      C =p \ \pm z_{c} * \sqrt{\frac{p(1-p)}{n+4} }

substituting values

      C = 0.21 \pm 2.33 * \sqrt{\frac{0.21(1- 0.21)}{20 +4} }

       C = 0.21 \pm 0.194

=>   0.016 \le C \le 0.404

7 0
3 years ago
rachel breaks up a large array into two smaller arrays. the two smaller arrays show 3 times five and 4 times 5. what was the lar
SVEN [57.7K]

Answer:

So the bigger array is 12 and 25

Step-by-step explanation:

Let's do a multiplication of this array first and Know it's result.

3 times five and 4 times 5. = (3*5) and (4*5)

= 15 and 20

Multiplying further gives us

= 15 * 20=300.

So to combine to get the bigger array.

We must get back 300 as the result of our product.

Let's multiply the row(x) with the row(x)

And the column (y) with column(y)

3 times five and 4 times 5.= 3*4 and 5*5

So the bigger array is 12 and 25

To check.

12*25 = 300

Proved.

4 0
4 years ago
Find the slope between the following points (-2,3).and (-7.-2)​
castortr0y [4]

Answer:

slope equals the change in x over the change in y. So slope equal negative 1.

8 0
3 years ago
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