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fgiga [73]
3 years ago
9

If 7x+2=5x, what is the value of -x?

Mathematics
2 answers:
yaroslaw [1]3 years ago
4 0
The value of x is -1.
7x+2=5x
2=-2x
-1=x
fomenos3 years ago
3 0

Answer:

x = -1

Step-by-step explanation:

We must solve 7x+2=5x for x.  To do this, subtract 5x from both sides:

2x + 2 = 0, or

2x = -2, or

x = -1

The solution is x = -1.

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What is the cube root of 27 in radical notation ​
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Answer: hi im mongraal

Step-by-step explanation:

In mathematics, a cube root of a number x is a number y such that y³ = x. All nonzero real numbers, have exactly one real cube root and a pair of complex conjugate cube roots, and all nonzero complex numbers have three distinct complex cube roots. For example, the real cube root of 8, denoted ³√8, is 2, because 2³ = 8, while the other cube roots of 8 are −1 + √3i and −1 − √3i. The three cube roots of −27i are 3i, 3√(3)/2-3/2i, and -3√(3)/2-3/2i.

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3 years ago
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In the 1960s, the average price for an ear of corn was 4.17 cents. In the 1980s, the average price went up to 9.83 cents. How mu
34kurt

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the answer is 5.66 cents :)

4 0
3 years ago
Write down all three-digit numbers that fit the descriptions below and use only the digits 0, 2, and 5. Use each digit as many t
pogonyaev

Answer:

200, 500, 250, 520, 220 and 550

Step-by-step explanation:

A number is multiple of 10 if the number finish in the digit 0.

So, all three-digit numbers that are multiples of 10 and have the digits 0, 2 and 5 are:

200

500

250

520

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3 years ago
How can you use a coordinate plane to solve perimeter and area problems?<br><br><br> Please help me
lana66690 [7]
Well, you can do
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perimiter=2(legnth+width)
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Solve the system of equations.<br> - 3x + 2y = 56<br> - 5 - 2y = 24
Oduvanchick [21]

Awnser

y=13

Step-by-step explanation:

-3x+2y=56

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so first we want to get rid of one variable, in this example we dont need to multiply because the y's cancel out

so we have

-8x=80

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now plug in x into an original equation

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hope that helps

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3 years ago
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