Mathematics High School

The perimeter of the rectangle below is 42 inches. Find the value of X.
Please help

Answers

Answer 1

Answer:

x = 4

Step-by-step explanation:

42 = 5x + 5x + ( x - 3 ) + ( x - 3 )

42 = 12x - 6

48 = 12x

x = 4

Perimeter is the length around the rectangle (or any other shape). For rectangles, it's found by adding the side lengths. In this case, it required algebra to solve for x.

Answer 2

Answer:

x = 4

Step-by-step explanation:

The opposite sides of a rectangle are congruent.

The perimeter is the sum of the 4 sides, thus

2(5x) + 2(x - 3) = 42 ← distribute parenthesis and simplify left side

10x + 2x - 6 = 42

12x - 6 = 42 ( add 6 to both sides )

12x = 48 ( divide both sides by 12 )

x = 4

Related Questions

Pls help?!!! 3 = a — 1

Answers

a=4 okokokokokokokokokok

Answer:

Step-by-step explanation:

3= a -1

+1 = a. you pass the negative 1 to the other side.

and it turns to a + 1 and then you add it which

gives you 4

4= a

Best Buy is having a HUGE sale. All items are 60% off. How much will you pay for a tv that originally cost $1200 including 5% sales tax?

Answers

Answer:

$480

Step-by-step explanation:

According to the problem, calculation of the given data are as follows,

Original cost including sales tax = $1,200

Discount = 60%

So, we can calculate the cost of TV after discount by using following formula:

Cost of TV after discount = $1,200 - ( $1,200 × 60%)

= $1,200 - $720

= $480

Hence, Cost of TV after discount is $480.

what the answer to 8/575

Answers

Cancer Res you are you still have to be

Answer:

71•8

Step-by-step explanation:

8/575

using long division method

the answer is

71•8

A baseball diamond is a square that is 90 feeton
each side. What is the distance from home to
second base?

Answers

Answer:

x = 127 ft

Step-by-step explanation:

Answer:45 ft

Step-by-step explanation:X^2= (90ft)^2 + (90ft)^2

Alex and his 3 friends went to the movies and got 2
boxes of candy, their total spent was $50. Miles and his friends went to the movies and got 3 boxes of candy, their total was $64. Remember each person needs to pay for a movie ticket, how much does a box of candy cost?

Answers

Answer:

$14 a box

Step-by-step explanation:

2x14=28, 50-28=22, 3x14=42, 64-42=22

Solve.
-5 3/4 - 3 1/2

Answers

the answer to this is -37/4

Wat ever this dude said he was right

A bicycle store costs $1800 per month to operate. The store pays an average of $35 per bike. The average selling price of each bicycle is $75. How many bicycles must the store sell each month to break even?

Answers

Answer:

Step-by-step explanation:

1800 total

35 dollars per bike

75 bucks to sell bike

75-35= 40

40 bucks per bike

1800 divided by 40 = 45 so 45 bikes

Jerome served $725 worth of meals last weekend. How much did Jerome earn last weekend?

Answers

Answer:

725 dollars probably

Step-by-step explanation:

it really depends on how much is cut away from his check from business expenses and how much his boss would take

Do Now
Determine the coordinates of the midpoint of the line
segment with endpoints R(6,-2) and S(-3,-2).
O (1,2)
O (1.5, 2)
O (1.5, -2)
(3,-2)

Answers

Answer:

(1.5, -2)

Step-by-step explanation:

First subract -3 from 6 to find the total distance of the line segment.

6 - (-3)

Two negatives make a positive

6 + 3

9 units distance

Knowing this, the midpoint is 4 1/2 units away from either end. (1/2 * 9 = 9/2 = 4 1/2 units) Either add 4.5 to -3, or subtract 4.5 from 6 (keep the -2 though, as this line is straight!) to get the coordinates of the midpoint.

-3 + 4.5

-3 + 3 + 1.5

(1.5, -2)

6 - 4.5

6 - 4 - 0.5

2 - 0.5

(1.5, -2)

The midpoint of segment RS is (1.5, -2).

Mark's favorite tree is a large oak
tree in his front yard. Mark wanted to
know how tall the tree is. At the
same time of day, he measured the
length of his shadow and the length
of the shadow cast by the tree. Mark,
who is 5 feet tall, cast a shadow 10
feet long. He found that the tree's
shadow was 140 feet long. How tall is
the tree?

Answers

Answer: The shadow of the tree is 280 feet long.

Step-by-step explanation:

We can use a ratio to solve this:

Use the Height to shadow for each. This works because the fractions must reduce to the same equivalent.

5/10 = 140/x

We can see that 5/10 is 1/2, so we need another fraction using 140 as the numerator that is equal to 1/2. That's easy here: Multiply 140 × 2 to get the new denominator, 280 that replaces x. That is the length of the shadow.

If you have a less obvious ratio, you can use Cross Multiplication to solve the unknown value in the ratio:

5/10 = 140/x Cross multiply the numerator of the left side times the denominator on the right side, and the denominator on the left side by the numerator on the right side:

5 × x = 10 × 140

5x = 1400 Divide both sides by 5 (the 5s "cancel" on the left)

5x/5 = 1400/5

x = 280

I hope this helps, especially when you see more questions like this in the future.

please help om failing math..

Answers

I’m pretty sure you can search that on or ask one of your classmates

Jayden's mother bought him the new PlayStation 5 Digital Edition for $420.15, including tax. She made him promise to pay her back in monthly installments. He made a down payment of $35.00 and paid the balance in 12 equal monthly payments. What was Jayden's monthly payment for this PlayStation 5?

A 32.10
B 35.01
C. 37.93
D 385.15

Answers

Answer:

A.32.10

Step-by-step explanation:

You have to remember to subtract the $35 then start to figure out how much he paid every month for a year.

PLS HELP WILL GIVE BRAINLIEST

Answers

Answer:

What he said

Step-by-step explanation:

solve 4/6 + 1/3

options:
6/6 or 1
7/6
5/3
12/6 or 2

Answers

the answer is A- 6/6 or 1.

1a. Write the equation: You work during the summer mowing lawns. You charge 13
dollars per lawn. You made $819 for the summer. *
Your answer

1b. Describe your steps to find the number of lawns you mowed. *
Your answer

1c. How many lawns did you mow? Write a complete sentence.

Answers

Answer:

819÷13=63

Step-by-step explanation:

you divide 819 by 13 and you get 63

Answer:

1b) 819 ÷ 13 =63

1c) 63 lawns were mowed

Write the prime factorization of the number.
$74=$

Answers

Answer:

Step-by-step explanation:

After a 80% reduction, you purchase a new washing machine on sale for $132. What was the original price of the washing machine?
The original price was $

Answers

If there’s an 80 percent reduction then you’re paying 20 percent of the original cost.

132 =.2x
X =$660

$200

Step-by-step explanation:

80% 200 is equal $132

PLEASE HELP ILL GIVE BRAINLIEST

Answers

Answer:

(-2,0) (1,0) (6,0)

Step-by-step explanation:

I used synthetic division which is a lot to explain so I would recommend googling it

Answer:

-12X - 2

Step-by-step explanation:

I don't know I have never done this i'm just going with my gut.

Please help me! I will give it 5 stars and I will heart the answer!

Answers

Answer:

Haha there is no question

Step-by-step explanation:

Please help me with I’m desperate

Answers

Answer:

Radius

314 cm²

Step-by-step explanation:

They gave you the diameter which you can find the radius from, and you need the radius to find the area. The radius is 10, and that squared is 11. Multiply 3.14 times 100 to get 314.

Word problem ideas for
4x+10
2(x-6)

Answers

Answer:

Step-by-step explanation:

Natalie is making costumes each costume has 4 buttons that costs 3 cents and a zipper costs 7 cents how much does she spend on buttons and a zipper for each costume?

Answers

Answer:

19 cents

Step-by-step explanation:

Natalie buys 4 buttons at 3 cents each. She also buys 1 zipper at 7 cents

We are to find the total amount that she spends for each costume

I converted cents to dollars.

4 buttons at 3 cents = 4x0.03 (3 cents is 0.03 dollars)

= 0.12

The zipper = 7 cents = 0.07 dollars

The total amount she spent = 0.12+ 0.07

= 0.19 dollars = 19 cents

Therefore she 19 cents in total for each costume

4 buttons at

The expression 4x/5-2x/3 is equivalent to?

Answers

Answer: The answer B

Step-by-step explanation: so the answer i got was x 5 so its B

3x +y = -5
2x + 3y = -8

Answers

Answer:

Step-by-step explanation:

for 3x +y = -5

it's [tex]x = \frac{-5 -y}{3}[/tex]

and for 2x + 3y = -8 it's

[tex]x = \frac{-8 - 3y}{2}[/tex]

Faith invested $81,000 in an account paying an interest rate of 2\tfrac{3}{8}2 8 3 % compounded continuously. Owen invested $81,000 in an account paying an interest rate of 2\tfrac{1}{2}2 2 1 % compounded annually. After 7 years, how much more money would Owen have in his account than Faith, to the nearest dollar?

Answers

Answer:633

Step-by-step explanation:

Answer:633

633 in delta math

Step-by-step explanation:

need help quick
evaluate the expression
4x−5 for x=10

Answers

Answer:

Step-by-step explanation:

hi aaihe to JB by see bsuhs hi I'm s

what is the value of the expression 4⁴?

Answers

Answer:

256

Step-by-step explanation:

Let C represent the cost in dollars and R represent the revenue in dollars. What is the break-even point? Use a table to help if necessary.

C=24x+80
R=44x
Break Even point (_ , _)

Answers

Answer:

Please check the explanation.

Step-by-step explanation:

Given

C=24x+80

R=44x

To determine

What is the break-even point?

Given that

C represents the cost in dollars

R represents the revenue in dollars.

At the break-even point Cost (C) equals Revenue (R), so

R = C

44x = 24x+80

44x-24x = 80

20x = 80

divide both sides by 20

20x/20 = 80/20

x = 4

Thus, at x = 4 the value of Cost (C) equals Revenue (R).

i.e.

C = 24x+80 = 24(4)+80 = $176

R = 44x = 44(4) = $176

Answer:

(4, 176)

Step-by-step explanation:

Cause im smart and its right :3

Need help, Simplify
2(-6+2) ÷ 4 =

Answers

Answer:

Step-by-step explanation:

2(-6+2)= -8 then divide it by 4 and you get -2

then 4 turns it positive

hope this helps ;}

2(-4) / 4 Add numbers in the parenthesis.
8 / 4 Multiply 2 and -4 first because it is in the question first.
Divide 8 / 4 = 2

I am having trouble on algebraic expressions and numerical expression what is the easiest way to solve my problem and im in 6 th grade

Answers

Hi. you've asked an incomplete question. However, I provided some explanation about algebraic expressions and numerical expression.

Step-by-step explanation:

First, we may wonder: What is a numerical expression? In simple words, they are mathematical expressions that contain numbers and operations (like +, -, ÷, ×).

For example, 7+70, 90-10, 60÷10, 5×4 are numerical expressions.

While an algebraic expression on the other hand is a mathematical expression that contains at least one variable.

Variables are letters or symbols (like x, y, p, q, etc) that represent an unknown number or value in a mathematical expression.

For example, 7x+70, 90y-10 are algebraic expressions since they contain at least one variable.

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The perimeter of the rectangle below is 42 inches. Find the value of X. Please help

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The perimeter of the rectangle below is 42 inches. Find the value of X.
Please help