2 3/4a=19 1/4
How do I find equation

Answers

Answer 1

Answer: so first convert 2 3/4 to improper fraction
2 3/4=8/4+3/4=11/4

11/4a=19 1/4
convert 19 1/4 to improper
19 1/4=76/4+1/4=77/4

11/4a=77/4
multiply both sdie sby 4
11a=77
divide by 11
a=7

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How many yards are in 42 feet

Answers

First you need to find how many yards is in 1 feet , so is equal = 3feet , Now you need to find one number that is multiply by 3 that is equal to 42 so that is : 14 .. I hope that this can help you :)

Munson's Sporting Goods purchases bowling balls from the manufacturer for a whole sale price of $50 each.There is a 60% mark up when they sell the bowling balls to their customers.What would be the retail price of a bowling ball?

Answers

The bowling balls are $80 each

A bag of 8 apples cost $2.88 What is the price of 1 apple?

Answers

Since there are 8 apples, you do 2.88 divided by 8.
The answer is,
.36 cents for each apple.
Hope it helps!

8 apples cost $2.88

Divide both numbers by 8.

1 apple costs $2.88/8

1 apple costs $0.36

What is the answer and work to 15% of 375

Answers

$15percent = .15 \n.15*375= 15percentof 375 \n\boxed{56.25}$

Tim's piggy bank contains dimes and nickels worth $5.50. He has 70 coins in all. Use substitution to solve the system of equations to find out how many of each coin Tim has.

Answers

Tim has a total of 30 nickels and 40 dimes.

What is Linear Equation?

Linear equations are the equations which consist of two or more variables having the exponent of the variable equals 1.

Total number of coins in the Tim's piggy bank = 70 coins

Let d be the number of dime coins and n be the number of nickel coins.

So d + n = 70

Total dollars = $5.50

10 dimes = 1 dollar

1 dime = 1/10 dollar = 0.1 dollar

20 nickels = 1 dollar

1 nickel = 1/20 dollar = 0.05 dollar

0.1 d + 0.05 n = 5.50

So we have two linear equations here : d + n = 70 and 0.1 d + 0.05 n = 5.50.

d + n = 70 ⇒ d = 70 - n

Substituting d = 70 - n in the equation 0.1 d + 0.05 n = 5.50,

0.1 (70 - n) + 0.05 n = 5.50

(0.1 × 70) - 0.1n + 0.05n = 5.50

7 - 0.05n = 5.50

-0.05n = -1.5

n = 30

So d = 70 - n = 70 - 30 = 40

Hence the number of nickel coins is 30 and number of dime coins is 40.

Learn more about Linear Equations here :

brainly.com/question/29739212

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5.50=0.10d+0.05n
70=d+n

how to solve-
n=70-d
5.50=0.10d+0.05(70-d)
5.50 = 0.10d +3.5 -0.05d
5.50= 0.05d+3.5
2=0.05d
d=40

70=d+n
70=40+n
n=30

there are 40 dimes and 30 nickels

Mason gave the waiter a $14.58 tip, which was 15 percent of the dinner bill. What was the amount of the dinner bill before he added the tip?A. $9.72
B. $21.87
C. $97.20
D. $218.70