Mathematics Middle School

I need help question istheimage attached

I Need Help Question Istheimage Attached

Answers

Answer 1

Answer:

length= 35 feet and width= 10 feet

Step-by-step explanation:

You are given the perimeter of the rectangular deck is

90 feet.

2 x length + 2 x width = 90 You are also given that the deck's length is 5 feet less than 4 times it's width. That is length = 4 x width - 5

Those two equations are your system of linear equations. The second equation can be plugged into the first equation. This gives us an equation entirely in terms of width.  

2x (4 x width - 5) + 2 x width =90

Distribute the 2 though

8 x width - 10 + 2 x width = 90

Combine like terms with width.

10 x width - 10 = 90

Add 10 to both sides.

10 x width = 100

Divide both sides by 10 width = 100

Now you can plug width into your original equation for length above. Recall: length = 4 x width - 5

Length = 4 x 10 - 5

Length = 40 - 5

Length = 35

Answer 2
length is 35 feet and width is 10 feet

Related Questions

Construct a scatterplot and identify the mathematical model that best fits the data. Assume that the model is to be used only for the scope of the given data and consider only linear, quadratic, logarithmic, exponential, and power models. Use a calculator or computer to obtain the regression equation of the model that best fits the data. You may need to fit several models and compare the values of R2.


y = –477.38 + 237.66 ln x


y = –109.41 + 14.59x


y = 11.46 e1.107x


y = 0.45x1.903

Answers

Answer:

I don't think middle schooler learn this.

Step-by-step explanation:

Solve for b.
3 < b/-4 + 4

61 points

Answers

Answer: b < 4

Step-by-step explanation:

[tex]\\ \sf\longmapsto 3<b/-4+4[/tex]

[tex]\\ \sf\longmapsto 3<b-16/-4[/tex]

[tex]\\ \sf\longmapsto -12<b-16[/tex]

[tex]\\ \sf\longmapsto b>4[/tex]

Done

evaluate m+n/6 , when m= -3 and n=18

Answers

Answer:0

Step-by-step explanation:

-3 + 18 divided by 6

3-(-3)=0

The Wing Station wants the average price of the lunch meal deals to be $8.

What does the price of the chicken wings need to be for this to happen?

Answers

Step-by-step explanation:

To calculate the mean, we do the the total divided by the number of values. With 6 values, for the average to be 8, the total needs to be 48. The current total is 41, so Chicken Wings needs to be 7, because 48-41=7

The chicken wings need to be 7 dollars

Answer 2,4,6 please!!!

Answers

EEEEEEEEEEEEEEEEEEEEEEEEEEEEE

hi can you plz help will mark brainlest

Answers

The answer is x ≥ -9
Answer: from negative eight to 6

Step-by-step explanation:

Click to see the pic! PLEASE NO LINKS, I CANT EVEN OPEN THEM FOR SOME REASON BUT I NEED AN ANSWER

Answers

Answer 75%=0.75

7%= 7/100

75/10=other

3/4=0.75%

0.07=7/100

7.5=other

Step-by-step explanation: hope that helps :))

0.75~ 75%. 3/4
7/100~. 7%. 0.07
other~. 7.5%. 75/10

WILL CHOOSE BRAINLIEST

Answers

day 13 because do 10-2+1 until it gets to 0

Help please giving brainlyest

Answers

Answer:

fewer than 14.05

Step-by-step explanation:

basically all I did was subtract the 88.6 by 2 until I got to 60.5 the answer is 13 minutes so fewer than 14 minutes.

Answer:

fewer than 14.05

Step-by-step explanation:

Use the given data to find the equation of the regression line. Round the final values to three significant digits, if necessary.

= 150.7 – 6.8x

= 140.4 – 6.2x

= –150.7 + 6.8x

= –140.4 + 6.2x

Answers

Answer: 150.7

Step-by-step explanation:

i did the math for it

The answer is 150.7

HELP PLS ASAPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:- 11/32

Step-by-step explanation:

4 /18 divided by 12 is 0.34375. If you make that a fraction it's -11/32.

Answer:

-33/8

Step-by-step explanation:

You make 4 1/8 a mixed number and it becomes 33/8 and you add a negative.

Can somebody shade this for me? Thanks so much!

Create and shade a number line that shows the following inequality. Make sure to label at least 3 numbers on the number line, put an open circle, and shade to the left or to the right.

x > 5

Answers

Answer:

Hope below ss helps

Answer:

See attached

Step-by-step explanation:

Shaded this for you

x > 5

Open dot at point 5 on x-axis, shaded region is to the right from the point 5

1. ESTIMATE THE NUMBER OF GALLONS REQUIRED TO PRODUCE 22 T SHIRTS. IS YOUR ESTIMATE AN OVERESTIMATE OR UNDERESTIMATE? EXPLAIN.
2. HOW MANY GALLONS OF WATER ARE REQUIRED TO PRODUCE 15 POUNDS OF CHOCOLATE? WRITE AND SOLVE AN EQUATION. LET 'g' BE THE NUMBER OF GALLONS.
(hidden water cost/ 1 pound of chocolate = 3,170 gal - 1 ream of paper = 1,321 gal -1 gallon of milk = 880 gal - 1 cotton t-shirt = 713 gal - 1 hamburger = 660 gal)
3. Extension : The owner of a company has a goal to reduce the company's water footprint by 100,000 gallons in one year. He estimates that if the company reduces its yearly need for paper by 80 reams, he will meet his goal. Could the owner have estimated correctly? Justify your answer.

Answers

It’s hold 3,00 gallons

Describe the overall shape of the histogram.

Answers

Answer:How would you describe the shape of the histogram? Bell-shaped: A bell-shaped picture, shown below, usually presents a normal distribution. Bimodal: A bimodal shape, shown below, has two peaks. This shape may show that the data has come from two different systems.

Step-by-step explanation:i

bell shaped, shows a normal distribution

Simplify 753.06 ÷ 2.2
A. 34.23

B. 3.423

C. 0.0029

D. 342.3

Answers

Answer:

D

Step-by-step explanation:

D. 342.3

I just did this question

Mary Lynne correctly evaluates the expression.

(14.91)(−1)

Which statements can Mary Lynne make?

Select all correct statements.

The first factor is 14.9.
The product is 14.9.
The first factor is −14.9
The product is −14.9.

Answers

Answer:

The First Factor is 14.91

The Product is -14.91

Step-by-step explanation:

When multiplying two numbers the two numbers being multiplied can SOMETIMES be called factors. This is not typically what factors are referring to.

When multiplying a negative number and a positive number the product is ALWAYS negative

Can I have some help?

Answers

Answer:

(4,5) , (5,8)

Step-by-step explanation:

i believe that a=5 b=6

Help my brain is on life support isnt it 2 to the power of 6

Answers

Yes it is I took the test and it said it was wrong but others got it right.

[tex]2^{6}[/tex]

When you have powers in this fashion, all we need to do is multiply the two to get our answer.

Now we can solve:

2 x 2 x 2 x 2 x 2 x 2

4 x 4 x 4

16 x 4

64

I hope this helps! :)

Does anyone have any ideas for multiplying 249 times 398 quickly and mentally? Everything online is too complex.

Answers

Answer:

So, the first solution is a calculator but sometime we don't have a calculator so, do

200 X 300 = A

40 X 90 = B

9 X 8 = C

then add just do multiplication from there like

A + B = D

D + C = E

Then your finally answer would be E

Hope that helps that's the way I do math quick in my head

(Btw the answer to 249 X 398 = 63,672 )

First do 2times3 and then add 4 0’s because they are in the hundreds place and each of them have 2 0’s then do 9times4 and add 2 0’s to the answer and then do 9times8 add up all the answers :)

how can you find the product of positive and negative decimals

Answers

(I have attached an example for reference)

1) Product means multiply, so we will multiply the decimal numbers.

2) First multiply both the numbers just the way you multiply two whole numbers.

3) note that WHILE multiplying you DON'T put the decimal point. Put the decimal point once you get your FINAL answer.

4) Once multiplied, count the total number of places after the decimal in both the numbers which were given. i.e, in the example it's 2 decimal places, one decimal place in 24.5 and one in 3.2, which means the total decimal places here are two.

5) now in your answer, start counting the decimal places from the right side of the number. For example in 7840, we start counting two decimal places from the right side of it and stop at 4 and put a decimal point there. This way we get 78•40.

Hope that helps...

Answer:

Step-by-step explanation:

Watch the video on the picture below

Hope it helps

#LetsStudy

pls help I have three more questions after this that are impossible

Answers

the basic formula for volume is length times width times height. you can use this to answer question C.
i do not know the length width or height in your problem.

This is the backside from the other photo I need extra help with this

Answers

Answer:

No LED lights pls, it makes it harder to view and consequently harder to answer.

can you turn off the leds it makes harder to read

how can you multiply integers

Answers

Answer: yes you can multiply integer

Step-by-step explanation: basically just a negative number

An integer is a whole number
To multiply a whole number you can use a calculator or use the column method

Which ordered pair would form a proportional relationship with the point graphed below?

Answers

Answer:

-10, 20 because -20, 40 divided by 2 = -10, 20

The ordered pair that would form a proportional relationship with the point (-20, 40) is given as follows:

(15, -30).

What is a proportional relationship?

A proportional relationship is a relationship in which a constant ratio between the output variable and the input variable exists.

The equation that defines the proportional relationship is a linear function with slope k and intercept zero presented as follows:

y = kx.

The slope k is the constant of proportionality, representing the increase or decrease in the output variable y when the constant variable x is increased by one.

The constant for this problem is given as follows:

k = 40/-20

k = -2.

Hence the equation is:

y = -2x.

When x = 15, the numeric value of the equation is given as follows:

y = -2(15)

y = -30.

Hence the point is:

(15, -30).

A similar problem, also featuring proportional relationships, is presented at https://brainly.com/question/7723640

#SPJ1

The cost of having photos taken includes a sitting fee and $12 for each portrait. The cost of 3, 6, and 9 photos respectively is $51, $87, and $123. What is the sitting fee? Use units in your answer and round answer to the hundredths place, for example $2.35
plz help

Answers

Answer:

The sitting fee is 15 dollars

Step-by-step explanation:

1 - 12 x 3 = 36

2 - 51 - 36 = 15

3 - 12 x 6 = 72

4 - 87 - 72 = 15

Answer:

$15.00

Step-by-step explanation:

cost of photos = sitting fee + $12 per photo

Let the number of photos = x

Let the sitting fee = s

cost of photos = s + 12x

cost of 3 photos = $51

s + 12(3) = 51

s + 36 = 51

s = 15

Answer: The sitting fee is $15.00

23+44+24435+-24 -24 -24 divided by 4 + 5 =


lol

Answers

Answer:

24453

Step-by-step explanation:

Did the math in my head

Answer:

24,453

Step-by-step explanation:

Hope this helps!! :))

Solve for x
3/5 (x − 7/10)= −3 1/4
Enter your answer as a mixed number in simplest form.

Answers

Answer:

x = 11(13/14)

Step-by-step explanation:

3/5(x – 7/10) = -31/4

open the bracket:

3/5 * x – 7/10 = -31/4

3/5 * –7x/10 = -31/4

3/5 + 31/4 = 7x/10

(12+155)/20 = 7x/10

167/20 = 7x/10

cross multiply:

140x = 1670

x =1670/140

x = 11(130/140)

x = 11(13/14)

The value of x is 1/5.

What is Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

3/5 (x − 7/10)= −3 1/4

Now, Solving for x

3/5 ( x- 7/10 )= 13/4

x- 7/10 = -13/4 x 5/3

x- 7/10 = -65 /12

x= -65/12 + 7/10

x= 24/ 120

x= 1/5

hence, the value of x is 1/5.

Learn more about equation here:

https://brainly.com/question/29657983

#SPJ2

The equality [tex]\sqrt{x^{2}} =-x[/tex] is true for ______________

format the answer should be in:
[tex]x\ \textless \ -3; x\ \textless \ 3\ \textless \ 7; x; x\ \textgreater \ 7[/tex]

Answers

Answer:

X < -3

Step-by-step explanation:

-x will be positive when x < -3

helppppppppppppppppp asap

Answers

Answer:

Step-by-step explanation:

Deeper than 32 i believe

I agree that it’s deeper than 32

Ill give brainless if you get right

Answers

2.4x+9.6x=180
12x=180
x=15
9x=135°
0.1x= 1.5°
0.6x= 9°
9x+0.6x=9.6x
135°+9°=144°
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