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Arte-miy333 [17]
3 years ago
15

What is (0.5x + 15) + (8.2x- 16.6)

Mathematics
1 answer:
nadya68 [22]3 years ago
3 0
1.6 I think I’m sorry if it’s incorrect
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George walked at a rate of 1/3 miles every 20 minutes. What was his walking rate in miles per hour? SHOW YOUR WORK!
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Sarah is shopping for groceries at the local supermarket. She paid for her groceries using a $100 bill recently issued by the US
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The sum of two numbers is 21. Three times the larger is equal to four times the smaller.
MatroZZZ [7]
Answer x = 12 and y = 9
Step by step
First identify the equations
The sum of two numbers is 21
x + y = 21
Change to y intercept for ease of math
y = 21 - x ( call this equation a)
Three times the larger is equal to four times the smaller
3x = 4y (call this equation b)
Now substitute the value of y = 21 -x into equation b
3x = 4(21-x)
Distribute
3x = 84 - 4x
Now we want to isolate x by adding 4x to each side
3x + 4x = 84 -4x + 4x
Combine like terms
7x = 84
Now solve for x by dividing both sides by 7
x = 12

Now to find y
Using equation a from above
y = 21 - x
Substitute our x value of 12 into equation
y = 21 - 12
solve for y
y = 9
Now check your work
x = 12 and y = 9
The sum of two numbers is 21
12 + 9 = 21

Three times the larger (x) is equal to four times the smaller (y)
3x12 = 4x9
36 = 36
Problem solved!!
8 0
2 years ago
2.4(0.81)<br> what do i do to solve this problem?? do i multiply and what are the steps
OverLord2011 [107]

Answer:

1.944

Step-by-step explanation:

if the problem was written just like the 2.4(0.81) then yes you multiply

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3 years ago
Question in the photo<br> Pls help
ra1l [238]

Answer:

F = \frac{9C+160}{5}

Step-by-step explanation:

Given

C = \frac{5(F-32)}{9} ( multiply both sides by 9 to clear the fraction )

9C = 5(F - 32) ← distribute

9C = 5F - 160 ( add 160 to both sides )

9C + 160 = 5F ( divide both sides by 5 )

\frac{9C+160}{5} = F

4 0
3 years ago
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