Find the area of a circle with a diameter of 22 inches?

Answers

Answer 1

Answer: $R=(Diameter)/(2)$

then

$R=(22~in)/(2)$

$\boxed{R=11~in}$

now we just need to apply this formula

$S=\pi*R^2$

$S=\pi*11^2$

$\boxed{\boxed{S=121*\pi~in^2}}$

Answer 2

Answer: $d=2r\n d=22\n 2r=22\n r=11\ inches\n \n A=\pi r^2\n A=\pi \cdot 11^2=3,14 \cdot 121=379,94\ inch^2$

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Scatter plot residuals, please help

Answers

Residual plot 1: question 1: is scatter plot C.   question 2: perfect model
Residual plot 2: question 1: is scatter plot B.   question 2: Not appropriate model
Residual plot 3: question 1: is scatter plot A.   question 2: Good (but not perfect) model

A triangle has sides with lengths of 8 millimeters, 15 millimeters, and 17 millimeters. Is it a right triangle?

Answers

Answer:

yes.

Step-by-step explanation:

to find this answer, use the pythagorastheorem.the pythagoras theorem states that a² + b² = c².

to see if this is a right angled triangle, we will use this formula, as the pythagoras theorem only works for right angled triangles.

we are going to work out c, which is always the hypotenuse. the hypotenuse is the longest side of a triangle, that is larger than the other values. we know that the hypotenuse of this triangle is 17, so let’s see if that’s the answer we get.

calculation:

a² + b² = c²

a = 8 millimetres

b = 15 millilitres

c = ?

8² + 15² = c²

64 + 225 = c²

64 + 225 = 289.

289 = c²

√289 = c

√289 = 17.

the pythagoras theorem correctly identified the length of the hypothenuse. as i said earlier, this theorem only works on right angled triangles, therefore, this triangle is right angled.

WILL MARK YOU BRAINLIEST NO GUESSES!!!!

Answers

C.PlotpointsCand DanddrawaraythroughthemusingCorDasanendpoint.

2.8 = 2y
What does y equal?
1.4
0.5
2.8
0.6

Answers

Answer: 1.4

Step-by-step explanation: First, swap the sides of the equation so that the one with the variable can be in front.

So, its 2y=2.8

To solve this, you simply divide both sides of the equation by 2.

2 divided by 2 is 0. That leaves you with the y by itself. Then, 2.8 divided by 2 is 1.4

So, y=1.4

$\text {Hello! Let's solve this Equation!}$

$\text {The First Step is to Flip the Equation:}$

$\text {Before: 2.8=2y}\n\text {After: 2y=2.8}$

$\text {Your Final Step is to Divide by 2:}$

$\text {2y/2=2.8/2}$

$\text {Your Answer will be:}$

$\fbox {y=1.4}$

$\text {Best of Luck!}$

$\text {-LimitedX}$

The following parallelogram is not drawn to scale.Find the unknown angle:
142⁰
a
za =

Answers

The twο adjacent angles in the parallelοgram are 142 degrees and 38 degrees, and the οppοsite angles are alsο equal tο 142 degrees and 38 degrees.

What are the supplementary angles?

Supplementary angles are thοse angles that sum up tο 180 degrees. Fοr example, angle 130° and angle 50° are supplementary angles because the sum οf 130° and 50° is equal tο 180°.

In a parallelοgram, οppοsite angles are equal and supplementary, which means they add up tο 180 degrees. Therefοre, the οppοsite angle tο the given angle οf 142 degrees is alsο supplementary tο it and equal tο0

180 - 142 = 38 degrees.

Since οppοsite sides οf a parallelοgram are parallel and cοngruent, the adjacent angles are alsο cοngruent. Therefοre, the οther angle adjacent tο the given angle οf 142 degrees is alsο equal tο 142 degrees.

Hence, the twο adjacent angles in the parallelοgram are 142 degrees and 38 degrees, and the οppοsite angles are alsο equal tο 142 degrees and 38 degrees.

To learn more about supplementary angles visit:

brainly.com/question/12919120

#SPJ1

Complete question:

HELP WITH MY MATH EXAM i don't know what to do and my head hurts a lot