What is the diameter in inches of a circle that has an area of 81

Answers

Answer 1

Answer:

d = 10

Step-by-step explanation:

A = πr²

81 /π = r²

r² ≈ 25

r = 5

d = 5(2) or 10


Related Questions

What percent is 40 out of 50

Answers

Answer: 40 out of 50 can be re-written into 80%.

Step-by-step explanation: 40 out of 50 is the same thing as 4/5. 1/5 is 20%. Four 20%s is 80%

Answer:

80%

Step-by-step explanation:

40/50 x 100%= 80%

hope this helped

10 POINTS!
Samir will use 7 cups of apples to make 4 batches of applesauce. Decide whether each expression shows the number of cups of apples in one batch.

a. 7 divided by 4 Yes or no
b. 4 divided by 4 yes or no
c. 7/4 Yes or no
d. 4/7 yes or no
e. 7 times 1/4 yes or no
f. The answer is 1 3/4 yes or no

Answers

Answer:

A = yes

B = no

C = yes

D = no

E = yes

F = yes

Hope I helped!!!

What is the volume of the triangular prism shown below?
8 cm
3 cm
13 cm

Answers

Answer:

312

Step-by-step explanation:

8 x 3 = 24

24 x 13 = 312

Laura creates a rectangular prism with wooden cubes. Each cube has an edge length of 3/4 inch. she uses a total of 240 cubes. the cubes are stacked 8 cubes high. What are the possible measurements for the length and width of the rectangular prism in inches.
Enter each measurement on a separate line.

Answers

Answer:

Step-by-step explanation:

Oo.24


A biker rode for 2.5 hr. at an average rate of 12 mi./hr. Find the distance traveled.

Answers

Answer:

30 miles

Step-by-step explanation:

12x2.5=30

Find the value of x.
PLEASE HELP this test is timed <3

Answers

Answer:

19

Step-by-step explanation:

180 - 123 = 57

57/3 = 19

hope this helps

(5x+2)(x2-3x+6)
How do I do this and what’s the answer

Answers

you need to use pemdas i will give i the answer in a minute

Answer:

5x³-13x²+24x+12

Step-by-step explanation:

Start by distributing (5x+2) into (x²-3x+6)

It is easiest to start with 5x.

When distributing 5x, your answer should be: 5x³-15x²+30x.

Then, distribute the 2 just as you did for 5x.

Your answer for that should be: 2x²-6x+12

After that, add the like- terms from both answers together.

5x³-15x²+30x+2x²-6x+12

The final answer is then: 5x³-13x²+24x+12

a factory has 8 more than 10 times as many doors as a school which has s doors. how many doors does the factory have

Answers

Answer: 80

Step-by-step explanation:

8 times more than ten is 80

The factory has 10s + 8 doors.

1)carla tiene 628 galletitas para preparar una torta, cada piso tendra 24 galletitas¿cuantos pisos puede armar?,¿le sobran galletitas o le alcanza justo?

POR FAVOR ES PARA HOY

Answers

Answer:

puede hacer 26 pisos y le sobran 4 galletas

I need help with math anyone points and brainlest

Answers

Answer:

B. the squares

Step-by-step explanation:

2 times 2.5 is 5

Answer:

The second option with the square.

2 x 2.5 = 5

2.5 is the scale factor

Y=20 when x=2 find y when x=5

Answers

Y=50 when y equals 5

Solve the following problems.
1) Hardy's plant grows rapidly. It grows by 10 cm every 2
years. How much taller will Hardy's plant be in 5 years? ​

Answers

Answer:

it should be 25 cm

Step-by-step explanation:

c=cm, y=years

10/2= 5,

5x5=25

5c + 5c +5c +5c +5c = 25c

so yeah, that's about it. I hope i helped you

Answer:

yuh the answer 25 my G

Step-by-step explanation:

Gabriella took a Spanish test with 50 questions and answered 44 of them correctly. What percent of the questions did grabrielle answer correctly

Answers

Divide 44 by 50

.88

Step-by-step explanation:

88%

Answer:

88%

Step-by-step explanation:

the number of correct answers (44) divided by the total questions (50) = 88%

What is the answer plwese help!?!"!.!

Answers

Answer:

768 in.

Step-by-step explanation:

1) A track is 4km long. Jimmy has jogged 3km.
What percentage of the track has Jimmy jogged?

Answers

75% is the answer or 3/4

PLEASE HELP ASAP, I HAVE 10 MINUTES ;
Arianna and her children went into a grocery store where they sell peaches for $1 each and mangos for $0.50 each. Arianna has $9 to spend and must buy at least 13 peaches and mangos altogether. If x represents the number of peaches purchased and y represents the number of mangos purchased, write and solve a system of inequalities graphically and determine one possible solution.

Answers

Answer:

Step-by-step explanation:

when 13 bought we find these inequalities

x + 12y < 7  no

2x + 11y < 7.5 no

3x + 10y < 8 no

4x + 9y < 8.5 no

5x + 8y >  9  yes

When 14 bought we find these inequalities

x + 13y < 7.5 no

2x + 12y < 8 no

3x + 11y < 8.5 no

4x + 10y > 9 yes  

We want to find and solve a system of inequalities to determine some possible solutions to Arianna's situation.

The possible solution is:

x = 2

y = 12

And the graph can be seen at the end.

Now let's see how to solve this.

First, we need to write the system of inequalities, the information given is:

Price of each peach = $1.Price of each mango = $0.50Arianna has $9.Arianna must buy at least 13 fruits.

Now we can define the variables:

x = number of peaches that she buysy = number of mangos that she buys

Then we must have:

x + y ≥ 13   (this means that she buys at least 13 fruits)

x*$1 + y*$0.50 ≤ $9  (this means that she can't spend more than $9)

Now we just need to graph these two lines, we can rewrite them as:

y ≥ 13 - x

y ≤ $9.00/$0.50 - x*$1/$0.50 = 18 - x*2

Then we just need to graph the two lines, and shade the region above the first one, and the region below the second one, the graph can be seen below:

Any point inside the double shaded region in the first quadrant is a possible solution. (we restrict only to the first quadrant because we can not use negative values for x nor for y).

Then a possible solution that we could choose is:

x = 2

y = 12

This means that she buys 2 peaches and 12 mangos.

If you want to learn more, you can read:

https://brainly.com/question/19526736

2(a+b)=0

A 2a + b
B. 2+a+b
C. 2a + 2b
D. 1a + b
E 1 / + 1 26

Answers

......the answer is 2a + 2b

Identify the problem that does not have the same quotient as the other three. Explain your reasoning. 49 - 7 4.9 - 7 0.49 + 0.7 0.049 = 0.07​

Answers

9514 1404 393

Answer:

  49 ÷ 7 = 7

Step-by-step explanation:

We assume your intended quotients are ...

  49 ÷ 7 = 7

  4.9 ÷ 7 = 0.7

  0.49 ÷ 0.7 = 0.7

  0.049 ÷ 0.07 = 0.7

The one that is different is 49 ÷ 7.

__

Evaluation of the quotients tells you which is different. Inspection of place values also tells you which is different. In all but the first quotient, the 4 and the 7 are in the same number place, so the quotients will be the same value.

071 point
Dashboard
What is the measure of anglex
Courses
X
Calendar
34
Inbox
34
History
73
63
Help
57

Answers

Answer:

B. 73°

Step-by-step explanation:

The triangle is an isosceles triangle as it has 2 equal sides. This implies that the angles opposite to the two equal sides are of the same measure.

Therefore,

x = (180 - 34) ÷ 2

x = 146 ÷ 2

x = 73°

For Sunday's brunch, Alexis is making a recipe that requires 8 cups of milk. She has 3 quarts of milk. Does she have enough for the recipe? Explain using numbers and words. Please make sure to use complete sentences. Please help it’s a test

Answers

Answer:

yes

Step-by-step explanation:

she needs 8 cups and 3 quarts is 12 cups

Which point is a reflection of (-4,-3) across the y-axis?
O (3, 4)
O (4, -3)
O (-3,-4)
O (4,3)

Answers

Answer:

The point after the reflection of (-4,-3) across the y-axis is:

(4, -3)

Hence, option B is correct.

Step-by-step explanation:

When a point P(x, y) is reflected across the y-axis, we reverse the sign of the x-coordinate while the y-coordinate remains the same.  

Thus,  

The rule to reflect a point across the y-axis is:  

P(x, y) → P'(-x, y)

In our case, we are given the point (-4, -3)

Let say the point is A(-4, -3)

Thus, using the rule to reflect a point across the y-axis is:  

P(x, y) → P'(-x, y)

A(-4, -3) → A'(-(-4), -3) → A'(4, -3)

Therefore, the point after the reflection of (-4,-3) across the y-axis is:

(4, -3)

Hence, option B is correct.

¿cuál es mediana?.
......

.

Answers

En estadística y teoría de la probabilidad, la mediana es el valor que separa la mitad superior de la mitad inferior de una muestra de datos, una población o una distribución de probabilidad. Para un conjunto de datos, se puede considerar como un valor "medio".Espero que esto te ayude. ¡Dios bendiga!

answer and get brainliest

Answers

Answer:

50

Step-by-step explanation:

4 x 1=4

2.5 x 5=12.5

12.5 x 4=50

So 50 is the answer can i have brainliest now please

Slope of (-3.6) and (-3,0)

Answers

Answer:

the slope for the points is 6

Step-by-step explanation:

6

The whole bar weighs 40 grams. How much does 1/5
of the bar weigh?

Answers

Answer:

8 grams

Step-by-step explanation:

if 5/5 is 40 grams, you divide 40 by 5 to get 1/5

I need help with number 9, plz help me

Answers

i can’t see the whole question, so i tried to answer as much as i could think of

Please solve and explain how you got your answer. (Thank you, MARKING BRAINIEST!!)
(Picture below)

Answers

Answer:

The total square kilometers is 299.

Step-by-step explanation:

Area equals length times width.

Answer:

299km

Step-by-step explanation:

Area= LxW

13x23=299

so your answer would be 299 square kilometers!

John had to different syrups. Syrup A is 2 parts sugar and 8 parts water, and Syrup B is 3 parts syrup and 5 parts water. How much of each should John mix together to get 280 quarts of syrup that is 3 parts sugar and 7 parts water?

Answers

It all started when my mom met my dad...

You'll know the rest

find the equation of the line passing through the point (2, -4) that is parallel to the line y=3x+2​

Answers

Answer (assuming it can be put in point-slope format):

[tex]y + 4 = 3(x-2)[/tex]

Step-by-step explanation:

You can write an equation of a line when knowing its slope and a line it passes through using point slope formula, [tex]y-y_1 = m (x-x_1)[/tex].

1) First, find the slope of the equation. We know it has to be parallel to y = 3x + 2. Lines that are parallel have the same slope, thus the slope of y = 3x + 2 is the slope of the answer as well. y = 3x + 2 is in slope-intercept format, or [tex]y = mx + b[/tex]. The coefficient of the x term, or [tex]m[/tex], represents the slope - so, the slope must be 3.

2) Now, use point-slope formula,[tex]y-y_1 = m (x-x_1)[/tex],  to write the equation. Substitute [tex]m[/tex], [tex]x_1[/tex], and [tex]y_1[/tex] for real values.

The [tex]m[/tex] represents the slope, so substitute 3 for [tex]m[/tex]. The [tex]x_1[/tex] and [tex]y_1[/tex] represent the x and y values of a point the line crosses through. The line crosses through (2, -4), so substitute 2 for [tex]x_1[/tex] and -4 for [tex]y_1[/tex]. This gives the following answer:

[tex]y - (-4) = 3 (x-(2))\\y + 4 = 3(x-2)[/tex]

THIS IS A BREAK QUESTION

what is your favorite school subject​

Answers

Answer:

Art

Step-by-step explanation:

...................

Answer:

Music

Step-by-step explanation:

Have a good rest of your day!

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