3 years ago

Hey! i’ll give brainliest help thanks

Mathematics

1 answer:

goldfiish [28.3K]3 years ago

7 0

A government by people

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What is the slope of the line that passes through the points (-3, 5) and (1, 15)

meriva

5/2 is the slope of the line

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3 years ago

Read 2 more answers

Frances read 4/5 of an article in three minutes. How much of the article did she read each minute?

Margarita [4]

Answer:

0.267

Step-by-step explanation:

0.2666666666666667

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2 years ago

The arc of the parabola y = x^2 from (3,9) to (4,16) is rotated about the y-axis. Find the area of the resulting surface. Please

Hitman42 [59]

Answer:

156.5

Step-by-step explanation:

Thinking process:

The area can be calculated using the formula:

$S = \int\limits^4_3 {2\pi x\sqrt{1+}(2x)^{2} } \, dx$

We let the substitution take place.

Therefore, we let $u = 1 + 4x^{2}$

Thus, $du = 8dx.$

So,

$xdx = \frac{1}{8}du$

Also, the interval of the integration changes to [ 37, 65]

Thus,

$S = \int\limits^4_3 {2\pi \sqrt{1+4x^{2} } } \, dx \\= \int\limits^65_35 {2\pi \sqrt{\frac{1}{8}u } } \, dx$

= $\frac{1}{6} [ 65^{\frac{3}{2}-37^{\frac{3}{2} } }$

= 156.5 units²

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3 years ago

Which functions are correctly graphed? <br><br> Select all the correct answers

garri49 [273]

the second one, and the third one

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3 years ago

Edward's cake recipe calls for 15 3/4 cups of flour and

rodikova [14]

Cups of flour=15 3/4=15+ 3/4=(4*15+3)/4=63/4
Cups of sugar=10 1/2=(2*10+1)/2=21/2

We solve this problem by rule of 3:

63/4 cups of flour--------------100 people
x------------------------------------ 25 people

x=(63/4 cups of flout * 25 people)/100 people=1575/400 cups of flour=
=63/16=(3*16+15)/16=3 15/16 cups of flour.

21/2 cups of sugar-----------------100 people
x-----------------------------------------25 people

x=(21/2 cups fo sugar * 25 people) / 100 people=525/200 cups of sugar= 21/8 =(2*8+ 5)/8=2 5/8 cups of sugar.

Answer: 3 15/16 cups of flour and 2 5/8 cups of sugar.

8 0

2 years ago