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kolbaska11 [484]

3 years ago

14

The perimeter of a rectangle can be found using the expression 2/ +2w where I represents length and e represents width. Find the

perimeter of the front of a new building whose length is 120 ft and width is 90 ft

1 answer:

Snezhnost [94]3 years ago

5 0

Answer:

420

Step-by-step explanation:

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Solve for b. Express your answer as an integer or integers or in simplest radical form. -165= -3-6b^3

Fynjy0 [20]

I wanna help you but I don’t understand sorry

4 0

2 years ago

stat: sample of 780 adults in the U.S.A., it was found that 80 of those had a pinworm infestation. You want to find the 99% conf

Anettt [7]

Answer: 554

Step-by-step explanation:

If prior population proportion is known, then the formula to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

As per given description, we have

p= 0.1

E=0.025

Critical z-value for 95% confidence : $z_{\alpha/2}=1.96$

Then,

$n=0.1(1-0.1)(\dfrac{1.96}{0.025})^2=553.1904\approx554$

Hence, the minimum sample size required = 554.

7 0

3 years ago

Please help its due Tommorow

scZoUnD [109]

Answer:

b) x+6

Step-by-step explanation:

8 0

2 years ago

Hey(: can somebody please help me with this question please !

s344n2d4d5 [400]

The volume of a cone is 1/3 pi r^2 h. So by substitution, V = 1/3 of 80pi which simplifies to V=26.667pi, which when multiplied out, provides the answer V = 83.8 cubic meters.

6 0

3 years ago

How do i do this ?i need help on finding the answer . To all three questions

Igoryamba

Answer:

area of larger circle : 9π = 28.27

area of smaller circle: 4π = 12.57

area of shaded region: 15.71

Step-by-step explanation:

area of a circle = πr^2

I think these are right i dont know tho

8 0

3 years ago