if a rectangle has a perimeter of 18 cm, and a height of 4 cm, what is the area?

Answers

Answer 1

Answer:

20 cm²

Step-by-step explanation:

Look at the diagram attached.

If the height is 4cm, we will have two sides that are 4cm for our rectangle.

We can label the other sides as x.

They are both x since opposite sides of a rectangle are equal in length.

We can make an equation with our perimeter:

[tex]2(4) + 2(x) = 18\\8 + 2x = 18\\2x = 10\\x = 5[/tex]

Now that we know the length & height, we can calculate the area:

4 × 5 = 20 cm²

If A Rectangle Has A Perimeter Of 18 Cm, And A Height Of 4 Cm, What Is The Area?

Related Questions

f I read 245 pages of The Lightning Thief, what percent of the book have I read? (There are 377 pages total, Round to the nearest percent

Answers

Answer:

65%

Step-by-step explanation:

set a porportion

245 =x

377  100

245x100= 24500/377  = 64.9 rounded = 65%

help me please need help missing lengths​

Answers

Step-by-step explanation:

please mark me brilliant

Step-by-step explanation:

5. θ = 60°

→ To find the value of y ,

Cos θ = b/h

putting the values in terms of cos

Cos 60° = y/16

1/2 = y/16

16/2 = y

y = 8 unit

→ To find the value of x ,

Sinθ = P/h

putting the values in terms of sin

Sin60° = x/16

√3/2 = x/16

16×√3/2 = x

16×1.73/2 13.84 unit

6. θ = 30°

→ To find the value of y

tanθ = p/b

putting the values in terms of tan

tan 30° = 2/y

1/√3 = 2/y

2×√3 = y

3.46 unit = y

→ To find the value of x

Sin θ = p/h

putting the values in terms of sin

Sin 30° = 2/x

1/2 = 2/x

4 unit = x

romina has a maximum of 90 minutes to make traditional mexican paper flowers she spends 15 minutes watching videos on how to make flowers then it takes her 3 minutes to do each flower romina writes the inequality 15 + 3f <90 to repesent the number of flowers F she has to make

Answers

Answer:

f<25, she can make less than 25 flowers to have enough time, (I think the inequalitie sign should have a line underneath it tho meaning, less than or equal to 25 flowers, which would only make sense)

Step-by-step explanation:

First you need I subtracted 15 from 90 which got me 75.

15 + 3f<90

-15       -15

_________

0           75

3f<75

__

3f  

75 divided by 3f= 25

x= -5y + 36
5x + 5y = 0

The substitution method. Also please help me I’m so confused

Answers

Answer:

x = -9
y = 9

Step-by-step explanation:

If we know that x  =  -5y + 36
The second line says that
5x + 5y = 0
We can substiute the value of x from the first line into the second line.

So it becomes
5 ( -5y+36) + 5y = 0
Distribute the 5 over the parentheses
-25y + 180 +5y = 0
Then we can add things that are alike; so that means we can add the y values
-20y + 180 = 0
Then add 20y to both sides of the equation
180 = 20y
Then you divide by 20.
You get 9 = y!
Now that you have the value of y, you can put it back into the intial question.
5x+5y = 0
5x + 5(9) = 0
5x + 45 = 0
5x = -45
x = -9

Answer:

x=-9 y=9

Step-by-step explanation:

Substitute x:

5(-5y+36)+5y=0

Use Distributive property

-25y+180+5y=0

Add Like terms

-20y+180=0

Subtract 180 from both sides

-20y=-180

divide -20 from both sides

y=9

Solve for x by substituting the value of y into the equation x= -5y + 36

to get x=-9

Write an equation for a line that passes through (1,-4) and (3,-5)

Answers

Answer:

y = -3/4x - 1/2

Step-by-step explanation:

Given:

Point 1: (1, -4)

Point 2: (3, -5)

Find:

The equation for the line that passes through Point 1 & Point 2

Solution:

y = mx + b

Will be the equation to arrive to at the very end, but we need m & b, the slope and the y-intercept

m = ( y2 - y1 ) / ( x2 - x1 ) = ( -5 - (-4) ) / ( 3 - 1 ) = -1 / 2

∴ m = - 1/2

Using either P1 or P2, plug in one of their respective x- and y-values into:

y = -1/2 x + b

I'll do (3, -5):

-5 = -1/2 ( 3 ) + b

-2 = -3/2 + b

-4 = -3 + 2b

-1 = 2b

∴ b = -1/2

y = -3/4x - 1/2 is the equation of the line that passes thru both points (-5, 4) and (3, -2)

please help ! ASAP step by step explanation please ​

Answers

Answer:

0

Step-by-step explanation:

→ First find inverse cosine 1/2

60°

→ Now multiply this answer by 3 because then if you substitute it in you get 0.5

∝ = 180°

→ Now find sine of 180°

0

hey, can you answer this for me?
9-3x=54?

Answers

Answer:

[tex] \Large{\boxed{\sf x = -15}} [/tex]

[tex] \\ [/tex]

Explanation:

Given equation:

[tex] \sf 9 - 3x = 54 [/tex]

[tex] \\ [/tex]

Subtract 9 from both sides:

[tex] \sf 9 - 3x - 9 = 54 - 9 \\ \\ \sf -3x = 45 [/tex]

[tex] \\ [/tex]

Divide each side by -3 :

[tex] \sf \dfrac{-3x}{-3} = \dfrac{45}{-3} \\ \\ \\ \boxed{\boxed{\sf x = -15}} [/tex]

[tex] \\ \\ [/tex]

▪️Learn more about equations here:

↣https://brainly.com/question/19225782

What is the area of this composite figure?
I WILL GIVE BRAINLIEST

A figure is comprised of 2 rectangles. The first rectangle has a length of 10.5 centimeters and width of 15.5 centimeters. The second rectangle has a length of 18 centimeters and width of 11.5 centimeters.

135 centimeters squared

207 centimeters squared

249 centimeters squared

279 centimeters squared

Answers

Answer:

249 centimeters squared

Step-by-step Explanation:

The area of the rectangle: l x w, where l is the length and w is the width.

= 15.5 x 18

= 279

Area of the smaller rectangle: l x w, where l is the length and w is the width.

= 4 x 7.5

= 30

We do not need this 30.

Area of the shaded region:

= 279 - 30

= 249 cm²

Last year at a certain high school, there were 84 boys on the honor roll and 50 girls
on the honor roll. This year, the number of boys on the honor roll decreased by 25%
and the number of girls on the honor roll decreased by 16%. By what percentage did
the total number of students on the honor roll decrease? Round your answer to the
nearest tenth (if necessary).

Answers

Answer:

Step-by-step explanation:

Boys Girls

84 50

%decrease %decrease

-25% -16%

84=100% 50=100%

75% 84%

75/100×84 84/100×50

=63 =42

84+50=134

63+42=105

134-105=29

134=100%

29

29/134×100

21.6%

The probability of getting a soda at the movie theater is 70%. What is the probability that the next three guests in the movie theater will get a soda

Answers

The probability that the next three guests in the movie theater will get a soda, when the probability of getting a soda at the movie theater is 70% is 0.343 or 34.3%.

What is probability?

Probability of an event is the ratio of number of favorable outcome to the total number of outcome of that event.

The probability of getting a soda at the movie theater is 70%.

[tex]P=70\%\\P=\dfrac{70}{100}\\P=0.7[/tex]

By the chain rule, the probability of getting the soda to the next 3 guest is equal to the cube of the probability of getting a soda at the movie theater.

Thus, the probability that the next three guests in the movie theater will get a soda is,

[tex]P^3=0.7^3\\P^3=0.343[/tex]

Thus,the probability that the next three guests in the movie theater will get a soda, when the probability of getting a soda at the movie theater is 70% is 0.343 or 34.3%.

Learn more about the probability here;

https://brainly.com/question/24756209

#SPJ1

Is the question below a statistical question?
What is the difference in rainfall between this year and last
year?

Answers

Answer:

No because there can only be one answer.

Step-by-step explanation:

Statistical questions have to have more than one answer in order for it to be statistical.

Emily walks every day, and she keeps a record of the number of miles she walks each day. The histogram and five-number summary below were created from the recorded miles for a random sample of 25 of the days Emily walked.

Answers

Given the method given to calculate an outlier, the method does not identify 7.5 miles as an outlier.

Is 7.5 miles an outlier?

An outlier is either very much larger or smaller than the rest of the data in the dataset.  In this dataset: 1, 2, 1000. 1000 is an outlier.

Outlier = 1.5 x interquartile range

Interquartile range = q3 - q1

1.5 x (3.8 - 2.6) = 1.8

To learn more about outliers, please check: https://brainly.com/question/27197311

In a 30 - 60 - 90° triangle x= 7.5 feet
What is the length of the hypotenuse?

Answers

Answer: 15ft or 7(2)

Step-by-step explanation:

The opposite side or the side standing up is the "x" side the hypotenuse is double the size of the opposite in a 30-60-90.

solve for y 3x+6y=30

Answers

Answer:

the answer= y=5−x/2

Answer: [tex]y=-\frac{1}{2} x+5[/tex]

Step-by-step explanation:

We need to isolate y by itself

Step 1) Subtract 3x from both sides

[tex]3x+6y=30\\3x-3x+6y=30-3x\\6y=30-3x[/tex]

Step 2) Divide both sides by 6 to isolate y

[tex]6y=30-3x\\\frac{6y}{6} =\frac{30}{6}-\frac{3x}{6} \\y=5-\frac{1}{2}x[/tex]

what is w + 4 1/4 = 13 19/20

Answers

Answer:

w = 9 7/10

Step-by-step explanation:

w + 4 1/4 = 13 19/20

Subtract 4 1/4 from each side

w = 13 19/20 - 4 1/4

Get a common denominator of 20

w = 13 19/ 20  - 4 1/4*5/5

w = 13 19/ 20  - 4 5/20

w = 9 14/20

We can simplify

w = 9 7/10

Rewrite the fractions to have the same denominator:

1/4 can be rewritten as 5/20


now you have w + 4 5/20 = 13 19/20

Solve for w by subtracting 4 5/20 from both sides:

W = 9 14/20 which can be rewritten as 9 7/10


answer: 9 7/10

Factorise 3(3x-y)-(y-3x)

Answers

Answer:

4(3x-y)

Step-by-step explanation:

Given:

[tex]\displaystyle \large{3(3x-y)-(y-3x)}[/tex]

To factor this kind of expression, first, find the common factor.

[tex]\displaystyle \large{3(3x-y)-(-3x+y)}\\\displaystyle \large{3(3x-y)+(3x-y)}[/tex]

Notice that in the expression, we have both same (3x-y). Therefore, (3x-y) is our factor.

Let u = 3x-y

[tex]\displaystyle \large{3u+u}\\\displaystyle \large{4u}[/tex]

Change u back to 3x-y:

[tex]\displaystyle \large{4(3x-y)}[/tex]

Therefore, the factored expression is 4(3x-y).

How many inches of snow fell each hour? (8th Math)

Answers

Answer:

2 inches

Step-by-step explanation:

If 10 inches of snow fell each hour, then you divide that by five hours to get your average, which then equals 2.  So your answer is 2 inches per hour.

I hope this answered your question and helped you :)

Answer:

Looking at the graph it looks like 5 inches in 2 1/2 hours

Hope this helps :)

1 . what’s -3 p + 6 p = ?


Hurry please!!!

Answers

Answer: 3p

Step-by-step explanation: The reason is because -3 + 6 = 3, therefore -3p + 6p = 3p. I hope this helped! If I did anything wrong then please let me know! :)

given:

[tex] - 3p + 6p[/tex]

solution:

first you'll have to combine light terms, both are light terms so,

[tex] - 3p + 6p[/tex]

[tex] =3p[/tex]

The area of a rectangle is 56 cm, Tho longth is 2 cm more than x and the width is 5 cm less than
twico x. Solve for x. Round to the nearest whole number,

Answers

Answer:

9

Step-by-step explanation:

Since Area = L × W

Thus,

Area = (x + 2)(2x - 5) = 56

x^2 +4x - 5x - 10 = 56

x^2 - x - 10 = 56

x^2 - x - 66

Using the quadratic formula:

a = 1

b = - 1

c = - 66

Solving:

[tex]\frac{x = (-b) +/- sqrt(b^2 - 4ac)}{2a}[/tex]

[tex]\frac{x = 1 + /- sqrt(1^2 - 4(1)(-66)}{2(1)}[/tex]

[tex]\frac{1 +/- sqrt (265)}{2}[/tex]

17.279/2

8.639

Round = 9

~Lenvy~

A grocery store sells long grain rice for 2.49 per pound. Write an expression for the cost of y pounds of long grain rice.

I dont want to waste time thinking about it

Answers

Answer:

Step-by-step explanation:

Cost = 2.49 * y

You really should spend the time. Math is used everywhere.

if x = 1/4 and Y = 3/7 evaluate the following expression 7x-4y ​

Answers

If x = 1/4 and Y = 3/7

Evaluate the following expression: 7x - 4y

[tex] \\ [/tex]

[tex] \rm{7 ( \frac{1}{4}) - 4( \frac{3}{7} ) } \\ [/tex]

Substitute the given value of x and y

[tex] \rm { \orange{7 \times \frac{1}{4} }} - 4 \times \frac{3}{7} \\ [/tex]

Calculate the product of the rational numbers

[tex] \rm{ \frac{7}{4} - \orange{ 4 \times \frac{3}{7 }} } \\ [/tex]

Calculate the product of the rational numbers

[tex] \rm \orange{ \frac{7}{4} - \frac{12}{7} } \\ [/tex]

Find the difference between the two fractions

[tex] = \small{\boxed{{\sf{ \frac{1}{28} }}}}[/tex]

Therefore, the answer is 1/28.

Answer:

Step-by-step explanation:

[tex]\text{Substitute the values of x and y in the expression}[/tex]

[tex]7x - 4y = 7*\dfrac{1}{4}-4*\dfrac{3}{7}[/tex]

            [tex]\sf =\dfrac{7}{4}-\dfrac{12}{7}\\\\ [LCM \ of 4 \ and \ 7 = 28]\\\\ =\dfrac{7*7}{4*7}-\dfrac{12*4}{7*4}\\\\=\dfrac{49}{28}-\dfrac{48}{28}\\\\=\dfrac{1}{28}[/tex]

HELP PLEASE WORTH A LOT OF POINTSSSSSSSSS!! SHOW YOUR WORK PLEASEEEEE!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

Tan 70 = 16/x

x = 16/tan70

x = 5.824 to the nearest thousandth

tan 41 = 16 / (x + y)

tan 41 = 16 /(5.8235 + y)

tan41(5.8235 + y) = 16

5.8235 + y = 16/ tan41

y = (16/ tan41) - 5.8235

y = 12.582 to the nearest thousandth

I need help pls!!! I would appreciate it

Answers

Answer:

(-1,-4) ---> 77

Step-by-step explanation:

if your catering people and its $80 for 6-8 people how much would it be to cater 128 people

Answers

Well if it’s 8 people that means that it’s 10 dollars per person which would make the total for 128 people $1280. But if it was 6 people it would be about 13 dollars per person. Which would make the total $1,664

Answer:

Your answer(s) is $1,706.67, $1,462.86, or $1,280

Step-by-step explanation:

This really varies based on whether you take $80 as equal to 6 people, 7 people, or 8 people.

I'll list all three explanations and you can choose one.

6 people: 1,706.67 (rounded to nearest cent)

128 ÷ 6 = 21.33333333

21.33333333 × 80 = 1,706.67

7 people: 1,462.86 (rounded to nearest cent)

128 ÷ 7 = 18.28571428571429

18.28571428571429 × 80 = 1,462.86

8 people:

128 ÷ 8 = 16

16 × 80 = 1,280

IMAGE BELOW I WILL GIVE BRAINLIEST

Answers

Answer: C: -4, -6 B:-14, -6 A:-14, -18

Step-by-step explanation: Multiply all of your points by 2

A square room has measures of length and height am and bm respectively. write the formula to calculate the area of its four walls​

Answers

Answer:

area of the four walls

= a^2 x 4

A can of diced tomatoes has a height of 11.5 cm and a diameter of 10 cm.
What is the volume of the can? Use 3.14 for i.
DO NOT round your answer.
A cubic cm

Answers

Answer:

10 cm

Step-by-step explanation:

the can is shaped like a cylinder

first step is to find the radius and then multiply the figure by 2

volume of a cylinder = nr^2h

n = 22/7

r = radius

903 = 11.5 x r^2 x 3.14

r^2 = 903 / (3.14 x 11.5)

r = 5 cm

diameter = 10cm

When an article is sold at 6% profit and 9% profit then the difference in sp is Rs 9 find CP and both SP of the article​.

Answers

Step-by-step explanation:

the present price of a motorcycle is Rs 2,25,000.if it's price is depreciated per year by 8% after how many years will the price of the motorcycle be rs 1,75,204.80?

please help me with this

Answers

Answer:

94 Wins

Step-by-step explanation:

Here we need to find the mean, to do this we add up all the values then divide the sum by how many values we started out with.

97 + 103 + 92 + 95 + 84 = 471

471 / 5 = 94.2

since we got a decimal we can round to find an exact number; since the decimal is under .5 we will round down, 94

So 94 wins would be the correct answer. Hope this helped!

Charlie had $938 he wants to buy gifts for his 15 family members he wants to spend the same amount of money (in dollars) for each person with the remaining money he buys a pen worth $3 how much money will he have left over after his purchases

Answers

Answer: $5

Step-by-step explanation:

938-3 = 935

935/ 15 = $62 on each person with a balance of $5

Other Questions
If the volume of the pyramid is 12 cubic inches,what is the height of the pyramid, in inches? What is the answer to 8 7/9 + 5 9/11 Explain the prophecy concerning the righteous "branch," including who prophesied concerning this "branch." use complete sentences. y=(1+2z+3z^3)(5z+8z^2-Z^3) What were some problems veterans (soldiers) had after the war? blank uses moving air and doesnt pollute the atmosphere. blank uses dead plant matter, and burning it releases carbon emissions into the atmosphere can anyone tell me what (4 times a number is at least -12) i need help. Suppose that a central bank pursues expansionary monetary policy by purchasing bonds. Classify each of the variables listed by the policy's short run effect upon them.a. The equilibrium interest rate ____________.b. Real GDP ____________.c. Investment spending ____________.d. The marginal propensity to consume ____________.e. The demand for loanable funds ____________.f. The supply of money ____________.e. The price level ____________.WORD BANK- increases- decreases- is unaffected help with homework please!!!!!! Compare natural selection to evolution. Be sure to justify your response in two or more complete sentences in the essaybox below. Planning, implementing, and controlling the physical flow of a product from its point of origin to its point of consumption is called How does carbon dioxide increase the earths temperature? Answer Help! IXL is so frusturating. it would be great if I could get some help. PLEASE PLEASE HELP FASSTT The perspective / theory that places unconscious impulses, thoughts, desires, and conflicts at the center of human behavior is What evidence is there to show that continental glaciers once covered South Africa? ____________ in rocks. What were the Black Shirts In 12 sentences, explain how scientists discovered new information about the Iguanodon and what they learned about the way the dinosaurs walked. What is the area of the figure? He is one of the greatest leaders that ____ever lived.(has/have)