Mathematics High School

The circumference of a circle is 7 m.
What is the area of the circle?

1. 3.5pi m^2
2. 12.25pi m^2
3. 14pi m^2
4. 49pi m^2

The Circumference Of A Circle Is 7 M.What Is The Area Of The Circle?1. 3.5pi M^22. 12.25pi M^23. 14pi

Answers

Answer 1

Answer:

2. 12.25pi

Step-by-step explanation:

circumference = diameter × pi

diameter = 7

area of circle = pi radius^2

radius = 3.5

3.5^2 = 12.25

answer = 12.25 pi

Related Questions

does the oval graph represent a function why or why not?​

Answers

Answer:

No

Step-by-step explanation:

Because using the vertical line test, the function is passed through twice.

write an equation for the both term of the arithmetic sequence 30,26,22,18

Answers

Answer:

I guess it decreases by 4 everytime so -4??? If thats what your asking

Step-by-step explanation:

30,26,22,18,14,10,8,4,-2.

A store is having a 20 percent off sale on all merchandise. If Mai buys one item and saves $13, what was the original price of her purchase? Explain or show your reasoning.

Answers

Answer:

$65

Step-by-step explanation:

Given

Percentage discount = 20%

Equivalent amount saved = $13

Let the original price of the product be x

To get x;

20% of x  = 13

0.2x =  13

0.2x  = -13

0.2 = 13

x = 13/0.2

x = $65

Hence the original price of the product is $65

A truck is working to carry a batch of goods including sand and
stone but it can only carry 20 tons at most. The carriage
charges of each ton of sand and stone are 10 and 15 dollars
respectively. Its owner wants to earn at least 250 dollars. Write
a system of inequalities to express this situation. What is the
least possible number of tons of stone the owner needs to
carry to meet his own goal?
tons
Enter the answer
Check it

Answers

Answer:

Y=10

Step-by-step explanation:

No


can anyone help answer all these questions

Answers

Answer:

A -2,-3, B 0,-3  C -1,1

Step-by-step explanation:

(2x + 7y) (4x – 8y)

Answers

Answer:

= 8x^2 + 12xy − 56y^2

Step by step:

(2x+7y)(4x−8y)

=(2x+7y)(4x+−8y)

=(2x)(4x)+(2x)(−8y)+(7y)(4x)+(7y)(−8y)

=8x^2−16xy+28xy−56y^2

=8x^2+12xy−56y^2

ASAP plss
An amusement park is holding a contest for people who are in line before 7 AM. The 42nd person in line winds free admission, and so do the six people before and after that person. Which graph could be used to determine the winners?

Answers

Answer: Bottom left

Step-by-step explanation:

(3x3 + 2x² + 10) + (3x3 + 2x2 + 10x)

Answers

Answer:

(3x  3 +2x  2  +5x+5)

Step-by-step explanation:

(3x3 + 2x^2 +10) +(3x3 +2x2 +10x)

(9 + 2x^2 +10) +(9+4+10x)

(19+2x^2) +(13 +10x)

now opening the brackets

19 +13 +2x^2 +10x

2x^2 + 10x +32

taking 2x common

2x(x+5) +32

Please help me I really don't know
The function 1.5x + 0.5y = 12 represents the number of hardcover books x and softcover books y you can buy at a used book sale.
a. solve the equation
b. make an input-output table to find ordered pairs for the function.
c. plot the ordered pairs in a coordinate plane.

Answers

Answer:

Step-by-step explanation:

Let's solve for x.

1.5x+0.5y=12

Step 1: Add -0.5y to both sides.

1.5x+0.5y+−0.5y=12+−0.5y

1.5x=−0.5y+12

Step 2: Divide both sides by 1.5.

1.5x

1.5

=

−0.5y+12

1.5

x=−0.333333y+8

Answer:

x=−0.333333y+8

Problem Francine uses 2 3 3 2 ​ start fraction, 2, divided by, 3, end fraction cup of pineapple juice for every 1 3 3 1 ​ start fraction, 1, divided by, 3, end fraction cup of orange juice to make a smoothie.

Answers

Answer:

Pineapple juice = 2 cups

Step-by-step explanation:

Francine uses 2/3 cup of pineapple juice for every 1/3 cup of orange juice to make a smoothie , how many cups of pineapple juice does Francine use for 1 cup of orange juice

Pineapple juice : Orange juice

2/3 cup : 1/3 cup

how many cups of pineapple juice does Francine use for 1 cup of orange juice

Let x = cups of pineapple juice

Pineapple juice : Orange juice

x cup : 1 cup

Equate the ratios

2/3 cup : 1/3 cup = x cup : 1 cup

2/3 ÷ 1/3 = x / 1

2/3 × 3/1 = x / 1

6/3 = x / 1

Cross product

6 * 1 = 3 * x

6 = 3x

x = 6/3

x = 2

Pineapple juice = 2 cups

Find the value of x if PQRS is a rhombus

Answers

X = 11
I know for sure. Just did this unit

Answer:

x = 11

Step-by-step explanation:

The diagonals of a rhombus are perpendicular bisectors of each other, thus

8x + 2 = 90 ( subtract 2 from each side )

8x = 88 ( divide both sides by 8 )

x = 11

hey i hope ur having a good day can you answer these?
thank you

Answers

question one

180 - 6 = 174 ( c )

because angles on a straight line are 180 !

question two

AB = 6 units

AC = 8 units

( i just counted the boxes )

BC = square root ( 36 + 64 ) = 10

( pythagorus’ theorum )

6 + 8 + 10 = 24 units ( b )

im late but :(

Answer:

1. C

2. B

Step-by-step explanation:

hope this helped <33

bye hope ur day is good :)

The base of an isosceles triangle is 7cm long. Each of the other two sides is x cm long. What will be the expression for its perimeter​

Answers

Let the length of the base of an isosceles triangle = x cms, then the length of a

leg =(x-7)cms. Acordingly:-

(x-7)+(x-7)+ x= 52 cms.

or. 3x=52+14

or. x = 66/3 = 22 cm.

Length of the base= 22 cm.

the circumference of a child's swimming pool that has a radius of 3 feet.

Answers

Formula for circumference= (2)(pi)(r) or (pi)(d)
diameter=2r=6ft
6ft*3.14=18.84

Three billiard balls are left on the table. Use the expressions to determine which two balls are furthest apart.

Answers

Answer: Balls 4 and 9 are furthest apart

Step-by-step explanation:

The 9 and 4 ball are farthest from each other.

What is an expression?

Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between.

Given that, three billiard balls are left on the table, we need to determine which two balls are furthest apart.

So, the balls are in the shape of a triangle, we know that, the greatest angle is opposite of the largest side,

So, we will find the angles first,

Since the angles of a triangle add up to 180 degrees,

(x-5)+(2x+1)+(3x-8)=180,

6x-12=180.

x = 32.

That means the 9 ball is at 27 degrees, the 4 ball is at 65 degrees, and the 5 ball is at 88 degrees.

Based on the angles, the farthest distance would be between balls 9 and 4.

Hence, the 9 and 4 ball are farthest from each other.

Learn more about expression, click;

https://brainly.com/question/14083225

#SPJ3

3x+45=60 solve for x

Answers

Answer:

x = 5

Step-by-step explanation:

you subtract 45 from both sides

3x = 15

you divide both sides by 3

x = 5

Answer:

x = 5

Step-by-step explanation:

Julie collects antiques. She bought one antique for $300. Its current value is represented by the expression 300(0.75)',
where t is the number of years Julie has owned the antique. Is Julie's antique going up or down in value?
Julie's antique is going
in value.

Answers

Answer:

they are gonna go down in value

Step-by-step explanation:

Answer:

down

Step-by-step explanation:

If the value in the perenthesis is a decimal it is an exponential decay.

Which of the choices best describes this arithmetic sequence?
-3, 1, 5, 9, 13,...

Answers

Answer:

Add by 4

Step-by-step explanation:

-3+4=1

1+4=5

5+4=9

9+4=13

express as a simple logarithm and simplify. PLEASE HELP!!!! asap!!! will give brainliest!!! thank you!!!

Answers

Answer:

A. [tex]log_{2} \frac{y}{x^5}[/tex]

Step-by-step explanation:

When expressing and simplifying this, we can see that the answer choice is A. [tex]log_{2} \frac{y}{x^5}[/tex]

Answer:

( C ) log2 x5y

LOOK AT THE PHOTO...What kind of line and which direction do you shade for this inequality y > 4x - 3? Line: solid; Shade: below Line: solid; Shade: above Line: dotted; Shade: below Line: dotted; Shade: above​

Answers

Answer:

dotted, below

Step-by-step explanation:

it will be dotted because the values that are equal to positive y and are on the line are not includedyou shade below the line because the only possible solutions for y are the negative numbers and they go down the plane

plss can someone do this ive been trying for hourss

Answers

Answer:

(6+y) (6-y) / 6-y

Step-by-step explanation:

Answer:

Negative Infinity

He calculates that these two periods account for 18% of minutes he spends at school. How many does he spend at school.

Answers

Answer:

26

Step-by-step explanation:

a sabeeeer

Step-by-step explanation:

Given line p is parallel to line q, measure of angle 3 = 5x - 3 and measure of angle 8 = 4x - 6, find x.

Answers

Answer:

None

Step-by-step explanation:

There is not enough information to be given a correct answer

None not enough information for me be able to answer it

Select two ratios that are equivalent to
what are ratios are equivalent to 2:9

Answers

Answer:

3,18    4,27

Step-by-step explanation:

Answer:

4:18 and 6:27

Step-by-step explanation:

Since ratios can also be written as a fraction, multiply the fractions by any whole number of your choosing.

2/9*2=4/18

2/9*3=3/27


help! find domains! algebra!

find domains of
2(x-2) +4
2*-(x-2) + 4

i will give brainliest to a correct answer with explaination!

Answers

Answer:

The domain of 2(x-2)+4 is all real numbers, as well as for 2-(x-2)+4

Step-by-step explanation:

Select the two correct factors of the polynomial:​

Answers

Answer:

(x + 6)

(x - 7)

Step-by-step explanation:

To factor the polynomial in form [tex]x^{2} +bx+c[/tex] find two factors of C that have a sum of B

B = -1

C = -42

Factors of 42:

1, 2, 3, 6, 7, 14, 21, 42

6 and -7 multiply to -42 and add to -1

Write in factored form:

(x + 6)(x - 7)

Answer:

(x - 7)(x + 6)

Step-by-step explanation:

Given

x² - x - 42

Consider the factors of the constant term (- 42) which sum to give the coefficient of the x- term (- 1)

The factors are - 7 and + 6 , since

- 7 × 6 = - 42 and - 7 + 6 = - 1 , thus

x² - x - 42 = (x - 7)(x + 6)

A circle has a circumferende of 13.04
units

Answers

What solution are you trying to find here with the circumference? Radius, diameter? I need more details so I can help you out. Thanks!

Someone please help me with this geometry question

Answers

Answer:

Step-by-step explanation:

-7x + 12 + (-8x + 48) = 180

-15x + 60 = 180

-15x = 120

x = -8

m<BDC= -7(-8)+ 12 = 56 + 12 = 68

m<CBA = -8(-8)+48 = 64+48 = 112

Answer:

x=-8

mbdc=68

Step-by-step explanation:

bda is a straight angle

=> bdc+cda=180°

=> (-7x+12)°+(-8x+48)°=180°

=> -15x+60=180°

=> -15x=120°

=> x=-8

bdc= (-7)×(-8)+12=68°

Which of the following is not a function?

A 2-column table with 4 rows. Column 1 is labeled x with entries 1, 2, 2, 3. Column 2 is labeled y with entries 3, 4, 5, 9.
A 2-column table with 4 rows. Column 1 is labeled x with entries negative 2, 1, 2, 3. Column 2 is labeled y with entries 0, 3, 4, 7.
y = 3x² – 6x + 4
{(3, 4), (6, 5),
(7, 9), (9, 15)}

Answers

Answer:

A on edge. -

A 2-column table with 4 rows. Column 1 is labeled x with entries negative 2, 1, 2, 3. Column 2 is labeled y with entries 0, 3, 4, 7.

y = 3x² – 6x + 4

{(3, 4), (6, 5),

(7, 9), (9, 15)}

Step-by-step explanation:

got it right

Answer:

it is A on edge the guy before me is wrong

Step-by-step explanation:

A gannet flies 24 1/2ft above sea level. It increases its elevation by 5ft. Then it dives and changes its elevation by -47 2/3ft. After it dives, what is the gannets elevation relative to sea level?

Answers

Answer:

Its elevation relative to the sea level is -18 1/6 ft (it is 18 1/6 below sea level)

Step-by-step explanation:

Here, we want to calculate the elevation relative to sea level

The sea level refer to the base of the sea

We follow the flight procedure;

distance of 24 1/2 ft above sea level , then go further up by 5

its elevation now is 24 1/2 + 5 = 29 1/2 ft

A change of -47 2/3 ft

So the elevation now will be;

29 1/2 - 47 2/3

= 59/2 - 143/3

= (177-286)/6 = -109/6

= -18 1/6 ft

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