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3 years ago

Find the slope between the points (-3, -5) and (7, -1)

Mathematics

2 answers:

statuscvo [17]3 years ago

6 0

Answer:

Step-by-step explanation:

6 is the slope im pretty sure. i followed the slope formula rise over run

( y2-y1 / x2-x1 ) and got 6

klasskru [66]3 years ago

3 0

Answer:

m = 2 /5

Step-by-step explanation:

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Suppose that Y varies directly with X, and Y = 4 when X = 16

mylen [45]

Answer:

find k first

y=kx

4=k16

k=0.25

then find y

y=kx

y=0.25x3

y=0.75

6 0

3 years ago

The figure is made up of hemisphere and a cylinder.

cluponka [151]

Answer:

Data: (Cylinder)

h (height) = 8 cm

r (radius) = 5 cm

Adopting:

V (volume) = ?

Solving:(Cylinder volume)

Note: Now, let's find the volume of a hemisphere.

Data: (hemisphere volume)

V (volume) = ?

r (radius) = 5 cm

Adopting:

If: We know that the volume of a sphere is , but we have a hemisphere, so the formula will be half the volume of the hemisphere

Formula: (Volume of the hemisphere)

Solving:

Now, to find the total volume of the figure, add the values: (cylinder volume + hemisphere volume)

Volume of the figure = cylinder volume + hemisphere volume

Volume of the figure = 628 cm³ + 261.6 cm³

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

You randomly choose an undergraduate student from a large state university. Let E be the event that the student is male, let F b

erik [133]

Answer:

( a ) is the right answer .

Step-by-step explanation:

P(E) = 0.48

Probability of being male = .48

Probability of being female = .52

P(F) = 0.72

Probability of being in state = .72

Probability of being out of state = .28

P(G) = 0.55

Probability of being in at least 20 years = .55

Probability of being less than 20 = .45

a )

P(student is an in-state male younger than 20)

= .72 x .48 x .45 = .1555 = .156

b )

P(student is an out-of-state female younger than 20)

= .28 x .52 x .45

= .065

c )

P(student is an in-state female younger than 20)

= .72 x .52 x .45 = .168

d )

P(student is an out-of-state male at least 20)

= .28 x .48 x .55 = .074

So , ( a ) is the right answer .

3 0

4 years ago

Jill bought a lamp for $40. She sold it at a garage sale for $12. What was the approximate decrease?

Vesnalui [34]

Answer:

she was left with 28$ I'm in high school i think I'm right

Step-by-step explanation:

3 0

3 years ago

A poll conducted in 2013 found that 52% of u.s. adult twitter users get at least some news on twitter.40. the standard error for

FinnZ [79.3K]

The 99% confidence interval for the population proportion is given by

$sample \ proportion \pm 2.575\times standard \ error$

Given that 52% = 0.52 is the standard proportion and the standard error is 2.4% = 0.024.

Therefore, the <span>99% confidence interval for the fraction of u.s. adult twitter users who get some news on twitter is given by

$0.52\pm2.575\times0.024=0.52\pm0.0618=(0.4582, \ 0.5818)$

</span>Therefore, the <span>99% confidence interval for the fraction of u.s. adult twitter users who get some news on twitter is 45.82% and 58.18%.

The interpretation of the confidence interval</span> is as follows: "We are 99% confident that the fraction of U.S. adult twiter users who get some news on twitter is between 45.82% and 58.18%.

3 0

4 years ago