write a real world problem that can be represented by the equation (my-2.7)+4.1=13.5 please help fast

Answers

Answer 1

Answer: (my - 2.7) + 4.1 = 13.5
Sal bought m amount of pizzas for y days. He had a discount of $2.70. The sales and delivery tax was $4.10. The total cost was $13.50.

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A set of house plans is made in the ratio 25 : 1. If a room is 5 m long, how long is this room on the plan?

Answers

Answer:

0.2 on the plan

Step-by-step explanation:

The unit is not given, so whatever the unit is will follow. I'm going to say that it is in meters.

25 meters in real life=1 inch (just a guess) on the plan.

25÷5 (the room length given) = 5

1÷5=0.2

You divide them both by the same number so your ratio can have the same rate. Hope this helps.

The combined area of the 3 windowpanes and frame shown below is 924 in.2. The frame is of uniform width. What is the side length, x, of each square windowpane? The image is of two rectangles one inside the other. Inner rectangle is divided into three squares each having length x . The space between the two rectangles is 6 inch both in length and width. A. 10 in. B. 20 in. C. 15 in. D. 25 in.

Answers

Answer:

Option A. $x=10\ in$

Step-by-step explanation:

we know that

The combined area of the 3 windowpanes and frame is equal to

$(3x+12)(x+12)=924\n \n3x^(2)+36x+ 12x+144=924\n \n 3x^(2)+48x-780=0$

using a graphing tool to solve the quadratic equation

The solution is $x=10\ in$

see the attached figure

–(k + 9) – 8 = –4k – 9

Answers

$\sf-(k+9)-8=-4k-9$

Distribute -1 into the parenthesis:

$\sf-k-9-8=-4k-9$

Combine like terms:

$\sf-k-17=-4k-9$

Add 17 to both sides:

$\sf-k=-4k+8$

Add 4k to both sides:

$\sf3k=8$

Divide 3 to both sides:

$\sf~k=(8)/(3)~or~2(2)/(3)$

$-(k + 9) - 8 = -4k - 9\n-k-9-8=-4k-9\n3k=8\nk=(8)/(3)$

Gregory predicts that 310 people will attend the spring play. And there was an actual total of 220 people who attended the spring play. What is the percent error.

Answers

310 - 220 = 90
90/310 = x/100 (cross multiplication)
9000 = 310x
9000/310 = x
x = around 29%

Answer:

29%

Step-by-step explanation:

What ratio is equvalent to 6 over 12

Answers

Hello from MrBillDoesMath!

Answer:

1/2

Discussion:

6/12 = => as 12 = 6*2

6 /( 6*2) = => cancel 6's in num and denom.

1/2

Thank you,

MrB

Is 41/50 closer to 9/11 or 10/11

Answers

It is closer to 9/11. What I did was convert all the fractions to decimals. 41/50 = 0.82, 9/11 = 0.8182 and 10/11 = 0.9091.

the answer is 9\11 hope this will help you

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