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3 years ago

Amanda receives money from her relatives every year on her birthday. Last year, she

Mathematics

1 answer:

umka21 [38]3 years ago

8 0

Answer:

We can call last years amount as 100 percent. that means 68-100. We want to know was 85 is so we can say 85-x. We have 68-100

85-x

Cross multiplying and solving for x we get 8500/68 =x x=125, so the answer is 125.

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PLEASE HELP =(

Elena-2011 [213]

Let X = pounds of Bermuda grass needed.

(20 pounds bahia grass x $6.30) + ( X x $3.65) = (20 +X) x $4.90

Simplify:

126 + 3.65X = 98 + 4.90X

Subtract 3.65X from each side:

126 = 98 + 1.25X

Subtract 98 from each side:

28 = 1.25X

Divide both sides by 1.25

X = 28 / 1.25

X = 22.4 pounds required.

4 0

3 years ago

A library had 6422 music CDs stored on 26 shelves. If the same number of CDs were stored on each shelf, how many CDs were stored

sattari [20]

Simply divide the number of CDs by the number of shelves. 6422 / 26 = 247 247 CDs per shelf.

8 0

3 years ago

Read 2 more answers

What are equivelent ratios give an example please then help me with problem 24

postnew [5]

4:5 8:10 12:15 that some eqivelent ratios

3 0

3 years ago

Kia purchased 3 pounds of grapes and spent $11.63 on other items. She spent a total of $20. She used the following steps to find

Maurinko [17]

3x + 11.63 = 20
3x + 11.63 - 11.63 = 20 - 11.63
3x = 8.37

by subtracting the 11.63 from both sides, this tells us how much the grapes cost....not per lb., but for the total of all the grapes.

7 0

3 years ago

I NEED HELP ASAP!!!!!!! A. m= -2 B. m= -1/2 C. m= 2 D. m= 1/2

LenaWriter [7]

Answer:

A. m = -2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Slope Formula: $\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (0, 0)

Point (1, -2)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [SF]: $\displaystyle m=\frac{-2-0}{1-0}$
[Fraction] Subtract: $\displaystyle m=\frac{-2}{1}$
[Fraction] Divide: $\displaystyle m=-2$

6 0

3 years ago