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3 years ago

Find the surface area and volume of the figure. Round to the nearest tenth.

Mathematics

1 answer:

Usimov [2.4K]3 years ago

7 0

Answer:

SA=64

V=28

Step-by-step explanation:

formula for SA: 2(lw+hw+lh)

formula for volume: l*w*h

where

l-(length)=2

w-(width)=2

h-(height)=7

lets solve for SA first:

2(2*2+2*7+2*7)

2(4+14+14)

2(32)

SA=64

now lets solve 4 volume

v=lwh

v=2*2*7

v=28

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Answer:

Step-by-step explanation:

the a = 30

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4 years ago

"Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents were asked if they felt political

melomori [17]

Answer: 0.0158

Step-by-step explanation:

Given : The data for the United States is that out of 1,000 sampled, 470 indicated yes, they felt political news was reported fairly.

According to the given information we have,

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Sample proportion: $\hat{p}=\dfrac{470}{1000}=0.47$

The standard error for proportion is given by :-

$S.E.=\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

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3 years ago

Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a

mihalych1998 [28]

Answer:

y = 4.125x + 496.25

Step-by-step explanation:

Set the data up as points. Then deal with the points.

Givens

(30,620)

(70,785)

y2 = 785

y1 = 620

x2 = 70

x1 = 30

Formula

Slope = (y2 - y1) / (x2 - x1)

Solution

Slope = (785 - 620)/(70 - 30)

Slope = 165 / 40

Slope = 4.125

===================

Now you need the y intercept. Either one of the two given points will give you that.

y = 620

x = 30

m = 4.125

y = mx + b

620 = 4.125*30 + b

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620 - 123.75 + b

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3 years ago

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frutty [35]

The slope would be 0

This is basically how you do it if you need more help let me know

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4 years ago

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