Mathematics High School

what is the area of a circle whose radius is 4x centimeters? write your answer in terms of pi.
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Answers

Answer 1

Answer:

16xpi

Step-by-step explanation:

To find the area of a circle the formula is pi r squared.

r represents radius, aka 4x.

4 times 4 yields 16.

Leaving you with 16xpi

Answer 2

Answer:

50.24

Step-by-step explanation:

A= πr^2

3.14 x 4^2 = 50.24

(4^2=16)

Related Questions

Which functions are increasing?
Select all answers that are correct.

Answers

Answer:

Step-by-step explanation:

I don’t rlly need the answer I just would like the method please
3x-7=17-5x

Answers

Answer: x=3

Step-by-step explanation:

3x-7=17-5x

-7=17-8x (subtract both sides by 3x)

-24=-8x (subtract both sides by 17)

3=x (divide both sides by -24)

Write an expression for the sequence of operations described below.subtract 4 from the sum of 2 and y

Answers

Answer:

( 2 + y ) - 4

Lines AB, CD, and LK intersect as shown in the diagram . Find M

Answers

the last one is the answer

The measurement of ∠ CSK = 110.2°

What is Parallel line?

Parallel lines are those lines that are equidistant from each other and never meet, no matter how much they may be extended in either directions.

Given that Lines AB, CD, and LK intersects at R and S respectively,

m∠LRB = (3x - 2)° and m∠RSC = (2x - 5)

m∠LRB = m∠CSK  → (Alternate exterior angles)

m∠CSK + m∠RSC = 180°  → (Linear pair angles)

Therefore, m∠LRB + m∠RSC = 180°

(3x - 2)° + (2x - 5) =  180°

5x - 7 = 180°

5x = 187°

x = 37.4°

So, m∠CSK =  (3x - 2)°

(3x - 2)° = 3*37.4 - 2

m∠CSK = 110.2°

Hence, The measurement of ∠ CSK = 110.2°

For more references on Parallel lines, click;

https://brainly.com/question/16701300

#SPJ2

What do we call a number that when we squared the result is negative?

Answers

Answer:

imaginary numbera

Step-by-step explanation:

Result of every natural number is positive and for imaginary number sqaure result positive .

7.74% of 789.13
Give your answer rounded to 2 DP.

Answers

Given :

A number 789.13 .

To Find :

7.74% of 789.13 .

Solution :

Let, 7.74% of 789.13 is x.

So,

[tex]x = \dfrac{789.13\times 7.74}{100}\\\\x = \dfrac{6107.8662}{100}\\\\x = 61.08[/tex]

Therefore, 7.74% of 789.13 upto 2 decimal place 61.08 .

How to graph 2x + y = 4 ?
Explain steps please !!

Answers

you need to rearrange your equation to make y the subject which would be

y= -2x+4

this now matches the formula y= mx+c , -2 being m and 4 being c.

c is your y intercept so the graph will go through 4 on the y axis. Then m is the gradient of your graph and because it is negative you know it is going downwards. 2 means that every unit value you go across the x axis the y axis will go down 2.

To find where your graph crosses the x axis you need to make y=0 in your equation which looks like
0=-2x+4
2x=4
x=2

Now you know that your x intercept is 2 so you can draw a line going through 4 on the y axis and 2 on the x axis like my photo.

in triangle ABC, bisectors of angle A and angle C cross each other in point M. find angle ABC if it is half of AMC. (no shape given)
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Answers

Answer:

[tex]\angle ABC=60[/tex]

Step-by-step explanation:

[tex][Kindly\ refer\ the\ image\ attachment.]\\We\ are\ given\ that,\\AM\ is\ the\ Angle\ Bisector\ of\ \angle BAC.\\Hence,\\\angle BAM= \angle MAC\\CM\ is\ the\ Angle\ Bisector\ of\ \angle BCA.\\Hence,\\\angle BCM= \angle MCA.\\Also,\\\angle AMC=2 \angle ABC[/tex]

[tex]Now,\\As\ we\ can\ observe\ that,\\\angle BCM + \angle MCA= \angle BCA\\\angle MCA+ \angle MCA= \angle BCA\ [\angle BCM = \angle MCA]\\Hence,\\2 \angle MCA= \angle BCA\\Or, \\\angle MCA=\frac{\angle BCA}{2} \\\\Similarly,\\\angle BAM + \angle MAC= \angle BAC\\\angle MAC + \angle MAC= \angle BAC\\2 \angle MAC = \angle BAC\\Or,\\\angle MAC=\frac{\angle BAC}{2}[/tex]

[tex]Through\ the\ Angle\ Sum\ Property\ of\ a\ Triangle,\ we\ know\ that:\\'The\ Sum\ of\ all\ interior\ angles\ of\ a\ triangle\ is\ 180.'\\Hence,\\In\ \triangle BAC,\\\angle ABC + \angle BCA + \angle CAB=180\\In\ \triangle MAC,\\\angle MAC+ \angle ACM + \angle AMC=180[/tex]

[tex]Hence,\\As\ \angle AMC= 2 \angle ABC, \angle MCA=\frac{\angle BCA}{2}, \angle MAC=\frac{\angle BAC}{2},\\2 \angle ABC+\frac{\angle BCA}{2}+\frac{\angle BAC}{2}=180\\By\ resolving\ the\ denominators,\\\frac{4 \angle ABC+\angle BCA+\angle BAC}{2}=180\\\\By\ comparing\ the\ Sum\ of\ angles\ in\ both\ the\ triangles,\\We\ find\ that\ the\ RHS\ of\ both\ the\ equations\ are\ equal\ i.e.180,\\The\ LHS\ of\ the\ equations\ are\ equal\ too.\\[/tex]

[tex]Hence,\\\angle ABC+ \angle BCA + \angle BAC=\frac{4 \angle ABC+\angle BCA+\angle BAC}{2}\\Hence,\\2(\angle ABC+ \angle BCA + \angle BAC)=4 \angle ABC+\angle BCA+\angle BAC\\Hence,\\2 \angle ABC+ 2 \angle BCA + 2 \angle BAC=4 \angle ABC+\angle BCA+\angle BAC\\Hence,\\2 \angle BCA + 2 \angle BAC-\angle BCA- \angle BAC=4 \angle ABC- 2 \angle ABC\\Hence,\\\angle BCA+\angle BAC= 2\angle ABC[/tex]

[tex]Lets\ get\ back\ to\ the\ Angle\ Sum\ of\ \triangle ABC,\\\angle ABC + \angle BAC + \angle ACB=180\\Hence,\\As\ \angle BCA + \angle BAC= 2 \angle ABC,\\\angle ABC + 2 \angle ABC=180\\Hence,\\3 \angle ABC=180\\\angle ABC=\frac{180}{3}=60[/tex]

What is the measure of
RST?

Answers

Answer:

D. 47

Step-by-step explanation:

Estimate the square root of 175 to the nearest integer

Answers

Answer:

Step-by-step explanation:

The nearest integer would be 13.

You would find the square root of 175, which is 13.22, and you would round that to the nearest integer, 13.

Find the midpoint of the line segment with the given endpoints (-4,4),(-2,2)

Answers

Answer:

(-3,3)

Step-by-step explanation:

use the midpoint formula

Andrew paid $40 for a pizza. He forgot that he had a coupon for 10% off the pizza. What would the sale price have been if he used his coupon?

Answers

Answer:

The pizza would have been $36

Answer:

The pizza is 36 dollars if he had used the coupon.

Step-by-step explanation:

What is the value of the expression with base 2 and exponent 5

Answers

Answer:the answer is 32

Step-by-step explanation: 2 to the 5th power =2*2*2*2*2=32

Hey guys

I need help my brain isn’t working today

Answers

1. x=7
2. x= -6
.
.
.
.
the other 2 i got lazy but need points sorry

Answer:

It's okay my brain doesn't work some days, too.

1. x = -7

2. x = -6

3. x = -1

4. y = 4

Step-by-step explanation:

1. Simply subtract equal and opposite values from positive values and do the same on both sides. Divide the final x value by its coefficient to get 1x = -7

2. Do the same as above AFTER distributing the 4(5 - x)

3. Once again, distribute all values then combine like terms like #1

4. This one uses a fraction to distribute, but it is just like dividing the number by 3 instead of multiplying (6/3 instead of 6 * 3)

Hope I helped!

Find x =

-47
-27
-73
-33

Answers

I think it’s 47 not a 100% sure though

please answer my question

Answers

Answer:

pppppppppppppointssssss

If angle B=50 and D=90, then angle C must =40 degrees (all 3 angles always add up to 180).
Line EF is a straight line (180 degrees)...so if angle C inside the triangle is 40, then the measure of angle BCF = 140 degrees (180-40=140)

Help? I’ll mark u brainliest

Answers

Answer:

11 because adjacent is basically next to and NKL is 12

Step-by-step explanation:

[2.1 + (9.2 x 3.3)] x 0.8

Answers

The answer is 25.968

Answer:

the answer is 25.96800

math problem plz help me ​

Answers

I believe the answer is B

Answer:

n+5>11

Step-by-step explanation:

5 added to number n: n+5

(5 added to number n)is greater than 11

is greater than: >

n+5>11

Solve for x

Please Help!

Answers

Answer:

x=56

(I do not know 100% but give it a try)

Step-by-step explanation:

You need to input the vertical angles and see what the supplementary angles are and then you get your answer. 180-60=x    180-60= 120   120-40-24= 56

I think x=56


Not sure thi

if Olivia works 4 hours more each week than her coworker lily, if Olivia works 32 hours in 2 weeks how many hours does lily works

Answers

Lily works 12 hours a week and 24 hours in two weeks

find the values of x and y?

Answers

Answer:

x = 20

Step-by-step explanation:

I don't see a y in the diagram.

The 3 angles x, 90 and (4x - 10) lie on the line EF and sum to 180°, so

x + 90 + 4x - 10 = 180, that is

5x + 80 = 180 ( subtract 80 from both sides )

5x = 100 ( divide both sides by 5 )

x = 20

X=20 is the answer
Gsjsjaka


15x = -60 I don’t get how to do to

Answers

Answer:

x = -4

Step-by-step explanation:

15x = -60

move 15 over and divide 60 by it

x = -60/15

then solve

x = -4

Answer:

x=-4

Step-by-step explanation:

first let's solve 15x for 60 so solving for the valuable "x" we move all terms containing x to the left and all other terms to the right. Dividing each side by 15 so x is negative 4

1) 8.7438
how do you put this in word form
​

Answers

Answer:

eight point seven thousand four hundred thirty eight

Answer:

its "eight and seven thousand four hundred thirty-eight ten thousandths".

Step-by-step explanation:

I need help with A and B

Answers

Answer:

I think its a cylinder and a pyramid

look at the picture please help​

Answers

Answer:

69

Step-by-step explanation:

There are 11 animals in the barnyard with a total of 32 legs. Some are cows and some are ducks.
How many of each animal are there?

Answers

5 cows and 6 ducks because since they are 11 animals and a total of 32 legs we need to solve for how many per legs which is 5x 4 = 20 legs and 6 x 2 = 12 legs summing them up gives 32 legs in total

Pls pls pls help!! And thank you I’m stuckk

Answers

Answer:

C = 12π

Step-by-step explanation:

The circumference (C) of a circle is calculated as

C = πd ( d is the diameter )

Here d = 12, then

C = 12π


please help. i’ll give brainiest

Answers

Answer:

the square root of 42 is an irrational number. the square root of 42 is.....

Step-by-step explanation:

You take a taxi for a distance of 4 miles. You paid $6 for the trip Your friend uses the same taxi company to travel 10 miles , and pays 10.50. How much does the taxi company charge per mile, how much is the taxi company’s initial fare?please answer it’s almost due :(((

Answers

Answer:

$3 initial fare, 0.75 per mile

Step-by-step explanation:

let x be initial fare, y be per mile

x+4y=6

x+10y=10.50

subtract first from second,

6y = 4.5

y = 0.75

substitute into first equation, x+3 = 6, x=3

Answer:

1.12 dollers per mile

Frogfly2015 avatar

basic fee is 1.52 dollars

Frogfly2015 avatar

15 mile thing is 18.32 dollars

Step-by-step explanation:

trust

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