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3 years ago

Helpppp please please THIS IS TIMED NO LINKS or I will report YOUU I WILL MARK BRAINLIEST Please give me an explanation

Mathematics

1 answer:

Mars2501 [29]3 years ago

6 0

Answer:

14800

Step-by-step explanation:

Area of trapezoid = $A=\frac{a+b}{2}h$

Using the formula above, our equation will look like this:

$\frac{145 + 225}{2} * 80 = 14800$

145 + 225 = 370

370/2 = 185

185 * 80 = 14800

PLZ GIVE BRAINLIEST

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Coopers & Lybrand surveyed 210 chief executives of fast-growing small companies. Only 51% of these executives had a manageme

densk [106]

Answer:

92% Of confidence intervals to estimate the proportion of all fast-growing small companies that have a management succession plan.

(0.46154 , 0.558)

Step-by-step explanation:

Given sample size 'n' = 210

The sample proportion 'p' = 51% = 0.51

Confidence intervals are determined by

$(p^{-} - z_{\alpha } \sqrt{\frac{p^{-} (1-p^{-} }{n} } , p^{-} +Z_{\alpha } \sqrt{\frac{p^{-} (1-p^{-} )}{n } } )$

The 92% of z-score value

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.08}{2} } = Z_{0.04} = 1.405$

92% Of confidence intervals to estimate the proportion of all fast-growing small companies that have a management succession plan.

$(0.51 - 1.405 \sqrt{\frac{0.51 (1-0.51 }{210} } , 0.51 +1.405 \sqrt{\frac{0.51 (1-0.51)}{210 } } )$

on calculation , we get

(0.51-0.048 , 0.51 + 0.048)

(0.46154 , 0.558)

Final answer:-

92% Of confidence intervals to estimate the proportion of all fast-growing small companies that have a management succession plan.

(0.46154 , 0.558)

3 0

3 years ago

Please answer question 14

sveticcg [70]

Answer:

8/25

Step-by-step explanation:

125 marbles total

15 green marbles + 25 blue marbles = 40

40/125 simplified to simplest form is 8/25

7 0

4 years ago

What is the formula for LSA and TSA of piramids

mojhsa [17]

Answer:

T. S. A. = 12pl + B donde p representa el perímetro de la base, l la altura de inclinación y B el área de la base.

Step-by-step explanation:

espero que ayude

7 0

3 years ago

7x + 10y = 96; 5x - 2y = 32

Andrew [12]

Answer:

x=8, y=4

Step-by-step explanation:

7x + 10y = 96

5(5x - 2y = 32)

7x + 10y = 96

25x - 10y = 160

32x = 256

x = 8

7(8) + 10y = 96

56 + 10y = 96

10y = 40

y = 4

3 0

3 years ago

Find the area of a circle with a radius of 8.

Ostrovityanka [42]

Answer:

201.06

Step-by-step explanation:

Area of a circle = pi x r^2

= 201.06

5 0

3 years ago

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