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storchak [24]
3 years ago
13

What is the value of x?

Mathematics
2 answers:
VladimirAG [237]3 years ago
8 0
Value of x is 10 duhhhhhh
erastova [34]3 years ago
4 0

Answer: the letter x is often used in algebra to mean a value that is not yet known. It is called a variable or sometimes an unknown. In x + 2=7, is a variable, but we can work out it's variable if we try!

Step-by-step explanation:

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A car is traveling at a speed of 44 feet per second. what is the car's speed in miles per hour? how many miles will the car trav
Sladkaya [172]
44 feet. 3600 seconds. 1 mile
----------- ---------------------- -----------
1 second 1 hour. 5280 feet

I wrote it this way so the units cancel out. You are multiplying the fractions by each other

The car is going 30 mph, and will go 120 miles in 4 hours.
4 0
2 years ago
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Find the value of a and b<br><br> a^2 + b^2 = 400
Oliga [24]

Answer:

Step-by-step explanation:

a^2+b^2=400

a^2=400-b^2

a=sqrt(400-b^2) & -sqrt(400-b^2)

-----------------------------------------------

b^2=400-a^2

b=sqrt(400-a^2) & -sqrt(400-a^2)

7 0
3 years ago
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Laura earns $134,350 per year. Use Laura’s income tax rate to determine what her monthly deduction should be . ( the tax is 28%)
Andreyy89
Answer: Her refund would be $5,681.20.

The problem says that Laura paid the estimate above, which is 28%.
0.28 x 134350 = 37618

However, she had some deductions.
134350 - 4000 - 12200 - 4090 = 114060

So, to find the tax on this amount, we multiply it again by 0.28.
0.28 x 114060 = 31936.8

The amount of the refund will be the difference.
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4 0
2 years ago
I do not know what to put and this was due yesterday
atroni [7]

Answer:

Your answer will be x=2

Step-by-step explanation:

Five plus 6 times a number is equal to 21 minus 2 times the number

Your equation is this:

5+6x=21-2x

Subtract 6x from both sides

5+6x-6x=21-2x-6x

5=21-8x

subtract 21 on both sides

5-21=21-21-8x

-16=-8x    Divide -8 on both sides

2=x

Hope this helps :)

8 0
2 years ago
Select an expression that is equivalent to <img src="https://tex.z-dn.net/?f=4%5Csqrt%7Bx%5Cfrac%7B2%7D%7B3%7D%20%7D" id="TexFor
qwelly [4]
Maybe A I’m not one hundred percent sure but good luck
7 0
3 years ago
Read 2 more answers
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