7th grade math problem.

7th grade math problem.

i need a awnser for this and a Equation to go with it. please asap

WRITE IN INTERVAL NOTATION

A fuel mixture consists of 3 parts oil and 13 parts gasoline. The oil costs $0.75 per liter, and the gasoline costs $1.60 per liter. A mechanic makes 432 liters of the mixture. How much oil does...

A={104,105,106,107,...,141

Suppose that an individual has a body fat percentage of 13.9% and weighs 153 pounds. How many pounds of her weight is made up of fat? Round your answer to the nearest tenth.

To use the linear combination method and addition to eliminate the x-terms, by which number should the first equation be multiplied? 5x+10y=15 10x+3y= 13

An object is dropped from 49 feet below the tip of the pinnacle atop a 949-ft tall building. The height h of the object after t seconds is given by the equation h equals negative 16 t squared plus...

Find the length of the shorter leg of a right triangle if the longer leg is 13 feet more than the shorter leg and the hypotenuse is 13 feet less than twice the shorter leg.

A ladder is leaning against a building so that the distance from the ground to the top of the ladder is 8 feet less than the length of the ladder. Find the length of the ladder if the distance from...

If the cost, Upper C, for manufacturing x units of a certain product is given by Upper C=x^2+10x plus 60 comma find the number of units manufactured at a cost of $ 11,060.

this is very confusing to me, and i need help

pls help me i cant understand this one

Given the line below. Write the equation of the line, in point-slope form. Identify (x1, y1) as the point (1, 2). Use the box provided or the upload option to submit all of your...

A.-4, B. -256, C.256, D. 4, E. 300, F. 64

William and debra are celebrating their 20th anniversary by having a reception at a local reception hall. they have budgeted 4500 for their reception.if the reception charges a 100$ clean up fee plus...

The Butler family and the Clark family each used their sprinklers last summer. The Butler family's sprinkler was used for 25 hours. The Clark family's sprinkler was used for 15 hours...

Write two inequalities and find the amount of boys and girls.

Trying to figure this out to explain to my son

Deandre's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Deandre $4.75 per pound, and type B coffee costs $5.85 per pound. This month,...