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4 years ago

Can someone help me with the question in the image

Mathematics

1 answer:

Papessa [141]4 years ago

7 0

The answer is 13 because,of both sides are parallel and the other sides opposite is half the there fore half of 26 is 13

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Can I get some help we just started this today

Alja [10]

Answer:

-2

Step-by-step explanation:

The slope of a line tells us how y responds to a change in x. If the slope is 2, it means that for every time x increases by 1, will will go up by 2.

We can calculate slope from a line, or with two given points. I used points (0,4) and (3,-2). Slope is the "Rise/Run."

The Rise: (-2 - 4) = -6

The Run: (3 - 0) = 3

Slope = Rise/Run = (-6/3) = -2

6 0

3 years ago

The proportion of junior executives leaving large manufacturing companies within three years is to be estimated within 3 percent

Leona [35]

Answer: 709

Step-by-step explanation:

The formulas we use to find the required sample size :-

1. $n=(\dfrac{z^*\cdot \sigma}{E})^2$

, where $\sigma$ = population standard deviation,

E = Margin of error .

z* = Critical value

2. $n=p(1-p)(\dfrac{z^*}{E})^2$ , where p= prior estimate of population proportion.

3. If prior estimate of population proportion is unavailable , then we take p= 0.5 and the formula becomes

$n=0.25(\dfrac{z^*}{E})^2$

Given : Margin of error : E= 3% =0.03

Critical value for 95% confidence interval = z*= 1.96

A study conducted several years ago revealed that the percent of junior executives leaving within three years was 21%.

i.e. p=0.21

Then by formula 2., the required sample size will be :

$n=0.21(1-0.21)(\dfrac{1.96}{0.03})^2$

$n=0.21(0.79)(65.3333)^2$

$n=(0.1659)(4268.44008889)\\\\ n=708.134933333\approx709$ [Round to the next integer.]

Hence, the required sample size of junior executives should be studied = 709

4 0

4 years ago

What is the best estimate of the lateral area of a cube with edges that are 2.1 inches long?

Dimas [21]

The best estimate of the lateral area of the cube with edges that are 2.1 inches long is 4.2

8 0

3 years ago

Chef Willie can make 54 pies in 2 hours. At this rate, how many pies can he make in 1 hour?

mihalych1998 [28]

27 pies in one hour 54=2 hours 54 divided by 2 equals 27

4 0

3 years ago

Can someone help me with part B

leonid [27]

B=5a-4
pick any a valve and replace it with a you will get b

4 0

3 years ago