Mathematics High School

Calculate the area of a circle to the nearest tenth if the diameter is 28 cm. *

Answers

Answer 1

Answer:

616

Step-by-step explanation:

Related Questions

HELP I HAVE 5 MINS :(

Answers

Answer:

y intercept is (0,-5)

Step-by-step explanation:

Is at x = 0

Intercepts the y axis

Factor the expression 28x -8

Answers

Answer:

4(7x-2)

Step-by-step explanation:

yeah so that's the answer your welcome

The factor of the polynomial expression 28x - 8 will be 4 and (7x - 2).

What is factorization?

It is a technique for separating a polynomial into sorts that will be duplicated out. As of now, the polynomial's worth will be zero.

Polynomial math is the investigation of conceptual images, while rationale is the control of that multitude of thoughts.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The expression is given below.

⇒ 28x - 8

Factorize the expression, then we have

⇒ 28x - 8

⇒ 4·7x - 4·2

⇒ 4(7x - 2)

The element of the polynomial articulation 28x - 8 will be 4 and (7x - 2).

More about the factorization link is given below.

https://brainly.com/question/6810544

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The table below shows the scores on a science test.
John
75 Brett
80
Elizabeth 90
Cindy
100
Jake
75
Kenji
85
Rick
80 Joy
80
Raul
90 Suni
85
The number of standard deviations between a score and the mean score is indicated by a z-score. What was Cindy's
Z-score on the science test?
a. -2.2
C. 16
b. 100
d. 2.2

Answers

Standard deviation is 7.35
Mean is 84

Cindy got a 100

(100-84)/7.35=2.2

D FINAL ANSWER

Based on the test scores of the students, Cindy's z-score on the science test is 2.2

How to determine the z-score of Cindy?

We start by calculating the mean of the scores using:

Mean =Sum/Count

So, we have:

Mean = (75 + 80 + 90 + 100 + 75 + 85 + 80 + 80 + 90 + 85)/10

Mean = 84

Using a statistical calculator, the standard deviation is:

Standard deviation = 7.35

The z-score is then calculated using:

z = (x - mean)/standard deviation

Cindy's score is 100.

So, we have:

z = (100 - 84)/7.35

Evaluate

z = 2.2

Hence, Cindy's z-score on the science test is 2.2

Answers

Answer:

2π/5

Step-by-step explanation:

b) Evaluate 27 : 32.

Answers

Answer:

0.84375

Step-by-step explanation:

A boy has 11 coins in dimes and quarters. Their value is $170. How many of each does he have? (Hint: Let x be the number of quarters and 11 - x be the number of dimes.)

Answers

Answer:

x - number of dimes, y - number of quarters

x + y = 11

0.10 x + 0.25 y = 1.70

0.10 x + 0.25 ( 11 - x ) = 1.70

We can solve it:

0.10 x + 2.75 x - 0.25 x = 1.70

0.15 x = 1.05

x = 1.05 : 0.15

x = 7 ( a boy has 7 dimes and 4 quarters )

Answer: D ) 0.10 x + 0.25 ( 11 - x ) = 1.70

Step-by-step explanation:

Michael has $68. Craig has $24 less than Michael has. Michael spends $20 on a new hat. Part A: Write an equation where the solution represents the amount of money (x), in dollars, Craig has after Michael buys the hat. Explain how you came to this equation. Part B: Now, Craig buys some socks. He has $16 left. Write an equation where the solution represents the amount of money (y), in dollars Craig spent on socks. Show how you know this is the correct equation.

Answers

Answer:

a) x + 4 = 48

b) y + 16 = 44

Step-by-step explanation:

a) Michael has $28 and Craig has $24 less than Michael. Let x represent the amount of money that Craig has. Hence:

x = 68 - 24

x + 24 = 68

Given that Michael spends $20 on a new hat. Therefore we subtract 30 from both sides of the equation:

x + 24 - 20 = 68 - 20

x + 4 = 48

x = $44

b) If y represent the amount of money that Craig spent on buying socks. He has 16 remaining.

Therefore:

44 - y = 16

y + 16 = 44

y = $28

Are the figures congruent? Explain.

Answers

I’m on the same question

PLEASE HELP DUE IN 20 MINUTES

Answers

Answer:

25x3

Step-by-step explanation:

Data that's displayed randomly on a scatter plot graph illustrates

positive correlation.

negative correlation.

none of these.

no correlation.

Answers

ANSWER

NO CORRELATION

HELP DUE IN 7 MINUTES

Answers

Answer:

1. 0,5

2. Move 5 units east

3. You need to plot checkpoint B on a graph, then you need to follow the instructions then you end up on 0,5. Which Ultimately is checkpoint C.

Hope this Helps!

3x + 0 = 3x

Need help

Answers

I don’t know how to answer needs to be but I think it’s 3X equals 3X

Answer:

x is equal to all real numbers.

Step-by-step explanation:

3x = 3x

No matter what number you substitute for x, 3x will always equal 3x.

what is the mean and median to 36 18 12 10 9

Answers

Answer:

mean=17, median=12

Step-by-step explanation:

Mean=36+18+12+10+9=85÷5

=17

Median=9+10+12+18+36

=12

Mean is adding all the numbers (sum=85) divided by number of numbers (5). 85/5=17
Mean is: 17

Median is number in the middle.
9, 10, 12, 18, 36
12 is the number in the middle.
Median is 12

1/3x1/6 7 more and I’m done

Answers

Answer: 1/18

Step-by-step explanation:

Multiply both Numerators

1x1=1

Multiply both Denominators

3x6=18

1/18

Veronica bought a pack of 50 CDs. She gave 8 to her friend, Leslie. Then she made 6 equal sets of CDs. How many CDs are in each set?

Answers

Answer:

8 CDs

Step-by-step explanation:

Veronica started with 50 CDs

After giving 8 CDs to Leslie, Veronica now has 42 CDs

Now Veronica made 6 equal sets

Hence, 42/6 = 8

So there are 8 CDs in each set.

This is a similar triangle please find the missing length. (?)

Answers

44/99=52/x
44x=5148
X=117
Hope this helps!

WORTH 100 POINTS NEED DONE ASAP WRONG ANSWERS WILL BE REPORTED THANK YOUUU

Answers

Answer:

1.x=√(15²-12²)=√81=9

2.x=√(6²+6²)=6√2

3.c=√(√19²-√7²)=√(19-7)=√12

Step-by-step explanation:

4.h=10

a=b=x

we have

by using Pythagoras law

h²=x²+x²

100=2x²

x²=50

x=√50=5√2

both legs =5√2

the length of one side of the base of a square pyramid is 15 cm. the height of each face is 40 cm. what is the surface area of the pyramid?

Answers

Answer:

B. 1,425 square centimeters

Step-by-step explanation:

Area of the square pyramid = b² + 2bs

Where,

b = length of square base = 15 cm

s = slant height of each face = 40 cm

Surface area of the pyramid = 15² + 2(15)(40)

= 225 + 1,200

Surface area = 1,425 cm²

In the first quadrant, you start at (3,5)
and move 3 units right and 2 units down
What point will you end up on?

Answers

Answer:

(6,3)

Step-by-step explanation:

3 right is an + to the left side or x of the pairs and the 2 down is a - 2 to the right side or y of the pair

Answer:

Check pdf

Step-by-step explanation:

Find the volume of the cylinder.
Either enter an exact answer in terms of " or use 3.14 for T.
2
units3

Answers

Answer:

56.52

Step-by-step explanation:

pi×r²h

=3.14×3²2

=3.14×9×2

=3.14×18

= 56.52³

dude sombody pleasee help me nobody is taking it seriously:(

Answers

Answer:

(9, 5) or (0, 14)

Step-by-step explanation:

4+2+3+2=9

Parallelogram Q T S R is shown. Sides Q T and R S are parallel, and sides Q R and T S are parallel. Angle Q is (9 x minus 6) degrees and angle R is (8 x minus 1) degrees. Devin started the work shown to solve for the unknown angle measures. 8x – 1 + 9x – 6 = 180 17x – 7 = 180 17x = 187 What are the measures of angles Q and R? m∠Q = ° m∠R = °

Answers

Answer:

m<Q = 93 degrees

m<R = 87 degrees

Step-by-step explanation:

Given the following angles;

m<Q = 9x-6

m<R = 8x-1

Looking at Devin's work, we will see that he the sum of both angles is 180 degrees

Hence m<Q + m<R = 180

9x - 6 + 8x - 1 = 180

9x+8x-6-1 = 180

17x - 7 = 180

17x = 180 + 7

17x = 187

x = 187/17

x = 11

Get m<Q

m<Q = 9x - 6

m<Q = 9(11) - 6

m<Q = 99 - 6

m<Q = 93 degrees

Get m<R

m<R = 180 - m<Q

m<R = 180 - 93

m<R = 87degrees

Answer:

93 and 87

Step-by-step explanation:

edge 2021

Simplify. Write your answer in standard form.

(4x^3+6x−7)+(3x^3−5x^2−5x+9)

Answers

answer: 7x^ - 5x^2 + x + 2

step-by-step explanation: i think thats it

WILL GIVE BRAINLIEST!
A custom-illustrated sign or banner can be commissioned for a cost of $20 for the material and $12.50 per square foot for the artwork. The equation that represents this cost is given by y = 12.50x + 20, where y is the cost and x is the number of square feet in the sign.

Graph this equation for values of x from 0 to 20.
The point (5, 82.5) is on the graph. Select a sentence that describes the meaning of this ordered pair.
A. It costs $5 for a custom sign 82.5 ft2 in area.
B. It costs $12.50 for a custom sign 20 ft2 in area.
C. It costs $20 for a custom sign 12.50 ft2 in area.
D. It costs $82.50 for a custom sign 5 ft2 in area.
E. It costs $270 for a custom sign 20 ft2 in area.

Answers

Answer:

Step-by-step explanation:

12.50 x 5 = 62.5

62.5 + 20 = 82.5

Diane made $272 for 17 hours of work.
At the same rate, how much would she make for 9 hours of work?

Answers

272/17 = $16
$16 per hour
16 x 9 = $144 for 9 hours

The probability distribution for a random variable x is given in the table Find the probability that X<=20

Answers

probability for X<=20 is 1

what is probability?

the probability is the department of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The chance of an event is a number between 0 and 1, in which, roughly speaking, zero indicates the impossibility of the event and 1 shows certainty.

probability = the number of ways of attaining success. the total number of possible results. For instance, the chance of flipping a coin and its being heads is ½, due to the fact there may be 1 way of getting a head and the total number of possible outcomes is two (a head or tail).

Learn more about probability here

https://brainly.com/question/24756209

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Multiply (5x - 2)^2

Answers

Answer: that would b 25x^2-20x+4!

Step-by-step explanation:

Answer:

25x^2-20x+4

Step-by-step explanation:

Testimated the ceiling was 10 ft tall.
The acutal height of the ceiling was
12 ft tall. What is my percent of error?

Answers

20% is your percent m of error in this problem

1.Which answer below represents the
line 5y= 15x+ 10 in the form "y= mx +
c" .

1. 5y= 3x + 2
2.y= 3x + 2
3.y= 5x + 2
O4.y= 3x + 5

Answers

I think B because you would have to divide by 5 to get y by itself.

Jenny wants to buy an MP3 player that costs $30.98. Write an equation so find how much change (x) she receive if she gives the cashier $40. *

Answers

Answer:

40.00-30.98=x

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