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makkiz [27]
3 years ago
11

What is the value of x? (х + 40) (3x) R 35 оооо 60 70

Mathematics
1 answer:
Lelu [443]3 years ago
5 0

Answer:

can you comment me the question...you havent wrote it well enough to understand...if you do...i will answer u right now.

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The answer is a) 16mph
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3 years ago
The numbers x and y are inversely proportional. When the sum of x and y is 42, x is twice y. What is the value of y when x = -8?
dolphi86 [110]

Answer:

y= -4

Step-by-step explanation:

x+y=42.   We know that x plus y equals 42.

x=2y .   We also know that x equals twice y.

2y+y=42.   Since we know that x=2y, we're going to replace x with 2y from the original equation, simplified would be 3y=42.

y=14.   3y=42 simplified is y=14, this is because we divided both sides by 3 (since 3 and 42 are both divisible by 3) (btw divisible by 3 simply means that it can be divided by 3)

x+14=42.   Now that we know what y equals, let's replace y with 14 from the original equation.

x=28.  Now that we know that x=28 and y=14, we know that y is always x/2.

When x=-8, we divide it by 2 and get, -4.

Not absolutely positive as this was all mental math, but hope this helps! :)

4 0
3 years ago
There is a 10% sales tax on a purchase of $13.50 how much is the tax
raketka [301]

Answer:

1.35

Step-by-step explanation:

13.5/100 times 10 = 1.35

8 0
3 years ago
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8 0
3 years ago
Which of the following is CORRECTLY written in scientific notation? Question 1 options: .34 x 10(exponent 3) 34 x 10(exponent 3)
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Correct scientific notation has only one number to the left of the decimal point.

The correct one would be:  3.4 x 10(exponent 3)

5 0
3 years ago
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