The cost of one shirt is 12.50 and cost of one pair of jeans is 24.75
Step-by-step explanation:
Let,
Cost of one shirt = x
Cost of pair of jeans = y
According to given statement;
4x+3y=124.25 Eqn 1
3x+5y=161.25 Eqn 2
Multiplying Eqn 1 by 3
Multiplying Eqn 2 by 4
Subtracting Eqn 3 from Eqn 4
Dividing both sides by 11
Putting 24.75 in Eqn 1
Dividing both sides by 4
The cost of one shirt is 12.50 and cost of one pair of jeans is 24.75
Keywords: linear equation, elimination method
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The equation which can be used to find the number of quarters and nickels is; n + q = 84, 0.05n + 0.25q = 17.80.
<h3>Quarters and nickels</h3>
- Total coins = 84
- Total value = $17.80
let
- Number of quarters = q
- Number of nickels = n
n + q = 84
0.05n + 0.25q = 17.80
From equation (1)
n = 84 - q
Substitute into (2)
0.05n + 0.25q = 17.80
0.05(84 - q) + 0.25q = 17.80
4.2 - 0.05q + 0.25q = 17.80
- 0.05q + 0.25q = 17.80 - 4.2
0.20q = 13.60
q = 13.60 / 0.20
q = 68
Substitute q = 68 into
n + q = 84
n + 68 = 84
n = 84 - 68
n = 16
Therefore, the number of quarters and nickels are 68 and 16 respectively.
Learn more about quarters and nickels:
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Answer:
2 to the power of 6 is 32
17to the power of 2 is 289
Step-by-step explanation:
Exponents are just multiplying the same number multiple times. so 2 to the power of 6 is 2*2*2*2*2*2. and 17 to the power of 2 is 17*17 = 289. to the power of is also written with a shift 6. ^
Hello!
First you had to used apply rule -(-b)=b
Since the denominators are equal to it should be combine by the fractions.
Then add 4+2=6
Finally you had to cancel by the common factor of 3.
Hope this helps! And thank you for posting at here on Brainly. And have a great day! -Charlie :)
Answer:
X=0
Step-by-step explanation:
4x=0
divide both sides by 4
x=0/4
x=0
