A blackboard has an area of 28 ft2 and a perimeter of 22 ft. What are the dimensions of the board?

Answers

Answer 1

Answer:

4 ft by 7 ft.

Step-by-step explanation:


Related Questions

What is the difference between 31 1/4 and 35

WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST

Answers

Answer:

3.75

Step-by-step explanation:

35 - 31 1/4 = 3.75

Toy rubber balls are packaged in a cylinder that holds 3 balls. The diameter of each ball is 8.7 cm. Find the volume of the cylinder. Use 3.14 for t. The volume of the cylinder is about cm3 (Round to the nearest tenth as needed.) ​

Answers

Clever567890 answer with the chicken ny dude

             

Sheila is biking at a constant speed. She travels 54 meters in 9 seconds. Part A How many meters per second does Sheila travel?

Answers

Answer:

Step-by-step explanation:

6 meters/ seconds

Step 1:  Find the unit rate

total distance/total time

54/9

6 meters / seconds

Awnser: 6 meters/ seconds

Answer:  

Answer:

She Travles 6 MPH

Step-by-step explanation:

6x9=54

PLEASE HELP IM BEING TIMED HURRY

A pack of 5 of board games costs $75.
If there is a direct proportion between the price (y) and number of board games (2), which equation represents the
situation?
A
y = 2
y = 15.2
y = 52
y = 75.00

Answers

C. y = 5x is your answer.

Answer:

C. y=5x

Step-by-step explanation:

I'm pretty sure that it's y=5x, because it says that y represents the price, and that 2 represents that amount of board games. The price is $75, and the number of board games is 5. So the answer should be y=5x.

Dennis stood on a 9 foot ladder to measure the sunflower. How much taller is the tallest sunflower than the ladder?

Answers

Answer:

See Explanation

Step-by-step explanation:

Given

[tex]Ladder = 9ft[/tex]

[tex]Tallest\ Sunflower = x[/tex]

Required

How much taller is the tallest

To get this, we simply calculate the difference between the height of the tallest sunflower and the ladder.

i.e.

[tex]Difference = Tallest\ Sunflower - Ladder[/tex]

[tex]Difference = x - 9[/tex]

-----------------------------------------------------------------------------------------------------

If for instance, the tallest is 13ft, then it is 4ft taller.

Because:

[tex]Difference = 13ft - 9ft[/tex]

[tex]Difference = 4ft[/tex]

The circumference of a circle is 36.424 feet. What is the circle's diameter?

Answers

The circumference of a circle is 36.424 feet right? Well the circles diameter 11.59.

Two trains on opposite tracks leave the same station at the same time. One train travels at an average speed of 80 kilometres per hour and the other travels at an average speed of 70 kilometres per hour. How long after they leave the station will they be 50 km apart?

Answers

Answer:

1/3 hr or 20 min.

Step-by-step explanation:

Call the trains A and B

Remember d = rt

Distance train A travels is 80t

Distance train B travels is 70t

Now, 80t + 70t = 50

              150t = 50

                    t = 50/150 = 1/3 hr or 20 min.

Answer: 20 minutes( 0.3333 hours) after they leave the station will they be 50 km apart, if the Two trains on opposite tracks leave the same station at the same time.

Step-by-step explanation:
One train travels at an average speed of 80 km/hr and the other travels at an average speed of 70 km/hr.

A rectangular doubles tennis court is (8x - 2) ft long and (4x - 4) ft wide. Which expression represents the perimeter of the tennis court?
A (12x - 6) ft
B. (12x + 6) ft
C (24x - 12) ft
D. (24x + 12) ft
If you can please show the steps​

Answers

Answer:

C

Step-by-step explanation:

Remark

The easiest way to do this is to add the two givens together and then multiply by two. Why 2?  Because the formula is P = 2(L + W)

Givens

L = 8x - 2

W = 4x - 4

Solution

P = 2*(8x - 2 + 4x - 4)

P = 2*(12x - 6)

P = 24x - 12

C

The expression 2 - 2 + 5x is equivalent to the expression 5x

True or False

Answers

Answer:

True!

Step-by-step explanation:

Put all the whole numbers together so 2+ (-2) cancels out

2-2+5x

positive 5x would be the only thing left so there you go!!!

Please help quickly I will mark brainliest!! At least the equation of the graph please

Answers

Answer:

a. The domain of the function is -3 < x ≤ 5

b. The range of the function is -3 ≤ y < 3

c. The y-intercept is the point (0, 0)

d. The values of 'x' at which f(x) ≥ 0 are;

x = -3, x = 1, x = 5

e. The intervals over which f(x) is decreasing are;

-3 < x ≤ - 1, and 1 ≤ x ≤ 3,

f. The local minimums are;

(-1, -1), and (3, -3)

Step-by-step explanation:

a. The domain of a function is the set of the possible independent variable values

Therefore, the domain of the function is -3 < x ≤ 5

b. The range of a function is the set of the possible values of the dependent variable

Therefore, the range of the function is -3 ≤ y < 3

c. The y-intercept is the point (0, 0)

d. The values of 'x' for which f(x) ≥ 0 are;

x = -3, x = 1, x = 5

The range of values of 'x' where f(x) ≥ 0 are;

-3 < x ≤ - 1.5, 0 ≤ x ≤ 1.5, 4.5 ≤ x ≤ 5

e. f(x) is decreasing over the following intervals;

-3 < x ≤ - 1, and 1 ≤ x ≤ 3,

f. The local minimums are the points that are lowest compared to other nearby points

The local minimums are;

(-1, -1), and (3, -3).

SOMEONE PLEASE HELP ME WITH THIS ILL GIVE YOU BRAINLY IF YOU GET IT RIGHT!!!!!!

Answers

Answer:

400

Step-by-step explanation:

please mark me brainliest if i was right

What is 1% of 4,935 ?
O A. 0.04935
O B. 0.4935
O C. 4.935
D. 49.35
E. 493.5

Answers

Answer:

D. 49.35

Step-by-step explanation:

[tex]\frac{4935}{100 X 100}[/tex] X 100 = 49.35

for brainiest:):):):):)

Answers

Answer:

number one is 22 number two is 16 number three is 32

Step-by-step explanation:

Find all the missing angles in the picture below. 1, 72, 57, 2, 3, 4,

Answers

Answer:

how cane we find the angels but there is no angels

Answer:

where are the angels babe

Step-by-step explanation:

o-0

Find the equation that matches the statement.

Four times a number reduced by seven equals 42

Question 7 options:

4x - 7 = 42


4x + 7 = 42


42 - 4x = 7


7x + 4 = 42

Answers

4x-7=42 is the answer

I will give BRAINLIEST

Answers

Answer:

its loaded

Step-by-step explanation:

i cant see how thats possible at all

4 1/2 years Is ___ months

Answers

Answer:

53.9999 months!

Step-by-step explanation:

:D

Which set of inequalities best describes the region R?

Answers

Answer:

C--- x+y<-1y>2

Step-by-step explanation:

hope this helps!

have a good day :)

A line that passes through the points (-3,5) and (6,10)

Answers

Answer:

y = 5/9x + 19/3

Step-by-step explanation:

slope: 10 - 5 / 6 - (-3) = 5/9

point-slope form:

y - 5 = 5/9(x + 3)

y -5 = 5/9x + 4/3

y = 5/9x + 6 1/3

Find each percent change. Round to the nearest tenth of a percent. State if it is an increase or decrease. From 79 miles to 84 miles
A) 6.3% decrease
B) 5% increase
C) 6% decrease
D) 6.3% increase​

Answers

Answer:

the answer is d.

Step-by-step explanation:

first, you want to use the formula,

new value - original value

____________________

         original value              * 100

you see that 84 is the new value and 79 would be the original value. substitute the numbers in. this is a increase since you will get a positive value.

84 - 79

______

   79      * 100

now we solve it.

5

__

79  * 100

you can either solve the fraction first then multiply that by 100 or multiply the numerator by 100 first then divide that by 79, each way works.

500

____

 79   =  approximately 6.3% increase (this is not a exact value, just rounded)

      or

5

__

79  = approximately 0.063 (this is not a exact value, just rounded)

0.063 * 100 = 6.3% increase

what is value of x in the multi-step equation
22-9x=9x+10

Answers

Answer:

x= 2/3

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

22−9x=9x+10

22+−9x=9x+10

−9x+22=9x+10

Step 2: Subtract 9x from both sides.

−9x+22−9x=9x+10−9x

−18x+22=10

Step 3: Subtract 22 from both sides.

−18x+22−22=10−22

−18x=−12

Step 4: Divide both sides by -18.

x=2/3

The school orchestra is creating a CD of their last concert. The total cost to make the CD is $300 plus $2.50 per CD. They are selling the CDs for $10 each. How many CDs will they need to sell to make a profit?

Answers

Answer:

They need to sell more than 40 CDs to make a profit.

Explanation:

They will make a profit when the sales are higher than the cost and with the information provided, you can write the following inequality:

10x>300+2.5x, where x is the number of CDs sold

Now, you can solve for x:

10x-2.5x>300

7.5x>300

x>300/7.5

x>40

According to this, the answer is that they need to sell more than 40 CDs to make a profit.

One side of a tabletop is 12x – 5 units long. Another side of the tabletop is 7x + 4 units long. If the tabletop is a square, what is the value of x?

Answers

Answer:

no c

Step-by-step explanation:

2 Last year the girls' basketball team had 8 fifth-grade students and 7 sixth-grade students. What was the ratio of sixth- grade students to fifth-grade students on the team? A. 8:15 B. 8:7 C. 7:8 D. 15:8 HELPP

Answers

Answer:

7:8

Step-by-step explanation:

There are 7 sixth graders and 8 fifth graders. You don't put the whole of all of them in the ratio.

The expression 10a+6c gives the cost (in dollars) for a adults and c children to eat at a buffet restaurant.

a. The cost for 1 adult is $ ?
. The cost for 1 child is $ ?




b. The total cost for 1 adult and 3 children is $ ?





Question 2
c. Is $30 enough for a family of 2 adults and 2 children to eat at the buffet?..

Answers

Answer:

Answer: The total cost is  assuming the cost for 1 adult is  and the cost for 1 child is

Step-by-step explanation:

what is the sum of the interior angle measures of a polygon that has 20 sides

Answers

Answer:

3240°

Step-by-step explanation:

Formula is ( 2n-4)90° where n is the no of sides

(2×20-4)90°

(40-4)90°

36×90

3240°

A tipi is set up with tip poles that are 36 feet long. The poles extend 3 feet above the top of the tipi. The diameter of the tipi is 14 feet. How tall is the tipi, rounded to the nearest tenth?​

Answers

Answer:

i dont know

Step-by-step explanation:

Identify the points which of the following coordinate pairs make the equation x - 9y = 12 true?

Show your reasoning.

1. ( 12, 0 )

2. ( 0, 12 )

3. ( 3, -1 )

4. ( 0, - 4/3 )

Answers

Answer:

Step-by-step explanation:

Because in equation x-9y=12

If we put x=12 and y=0 then it satisfy equation. (12)-9(0)=12

So, (12,0) make equation

(3,-1) also make equation

(3)-9(-1)=12

(0,-4/3) also make equation

Because

0-9(-4/3)=12

Only (0,12) is not making

Beacuse

(0)-9(12) is not equal to 12

A dog shelter has 22 poodles. The number of poodles is doubling every year. How long before the shelter has 22,528 poodles?

Please help

Answers

Answer:

I think 1024 days? Which is around 2 years...

Help in math pleas due in few minutes!!!!

Answers

Answer:

3 inches

Step-by-step explanation:

if she cut 3 inches off the length, that makes it 9 inches. the original rectangle was 2 inches longer. so subtract 2 from 9 and 7. she needs to have the width 7 inches.

Easy. Simple math. If she has 12 - 3 that equal 9. Now it’s length 9 and width 10. To get similar to original that would be length 9 width 7. Because you’d subtract two off of 10
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