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4 years ago

Please help me. And please show your work. Thanks

Mathematics

1 answer:

Crazy boy [7]4 years ago

3 0

The answer is 387.71
Formula: pi * r (r + (square root of h^2 + r^2) )
Plug in and solve.

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IRINA_888 [86]

1. Answer is b.

2. Answer is c.

3. Answer is a.

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4 years ago

Triangle ABC has vertices at (-4,0) , (-1, 6) and (3,-1) perimeter of triangle ABC, rounded to the nearest tenth ?

makvit [3.9K]

Answer:

The perimeter of triangle ABC is $P=21.8\ units$

Step-by-step explanation:

The perimeter of triangle ABC is equal to

$P=AB+BC+AC$

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have

$A(-4,0),B(-1, 6),C(3,-1)$

step 1

Find the distance AB

$A(-4,0),B(-1, 6)$

substitute in the formula

$d_A_B=\sqrt{(6-0)^{2}+(-1+4)^{2}}$

$d_A_B=\sqrt{(6)^{2}+(3)^{2}}$

$d_A_B=\sqrt{45}\ units$

step 2

Find the distance BC

$B(-1, 6),C(3,-1)$

substitute in the formula

$d_B_C=\sqrt{(-1-6)^{2}+(3+1)^{2}}$

$d_B_C=\sqrt{(-7)^{2}+(4)^{2}}$

$d_B_C=\sqrt{65}\ units$

step 3

Find the distance AC

$A(-4,0),C(3,-1)$

substitute in the formula

$d_A_C=\sqrt{(-1-0)^{2}+(3+4)^{2}}$

$d_A_C=\sqrt{(-1)^{2}+(7)^{2}}$

$d_A_C=\sqrt{50}\ units$

step 4

Find the perimeter

$P=AB+BC+AC$

substitute the values

$P=\sqrt{45}+\sqrt{65}+\sqrt{50}=21.8\ units$

8 0

3 years ago

The repeated-measures ANOVA is a two-stage process. Which statement accurately describes the second stage of this process

Keith_Richards [23]

The statement that describes the second stage of the repeated-measures ANOVA is: <em>it removes individual differences from the denominator.</em>

The repeated-measures ANOVA is a two stage process that is described as analysis of dependencies. This test is used to prove an assumed cause-effect relationship between varaibles (dependent and independent).

The means across one or more variables which have repeated observations are compared using the repeated-measures ANOVA.

Total variability is divided into variability between and within treatments in the first stage of the repeated-measures ANOVA, while <em>the second stage removes individual differences from the denominator.</em>

Learn more about the repeated-measures ANOVA on:

brainly.com/question/15394749

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2 years ago

What is an equation of the line that passes through the points (5, 4) and (2, -2)?

Georgia [21]

I think the answer is Y=2x-6