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creativ13 [48]
3 years ago
7

Translate the expression 5x - 7.

Mathematics
1 answer:
Rufina [12.5K]3 years ago
7 0
Answer: the difference of five times a number and 7

There are two operations in the expression 5x - 7, a multiplication (of x by 5) and a subtraction (7 from 5x).

The PEMDAS order of operations says the multiplication is done before subtraction.

The first answer choice would look like 5(x - 7).
The third answer choice would look like (x - 7) + 5.
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Solve issuing Pythagorean theorem
Anna35 [415]

Step-by-step explanation:

(8x8) + (16x16) = 64+256 = 320

√320 = 17.9

8 0
3 years ago
BRAINIEST IF ANSWERED CORRECTLY
adoni [48]

An example of something that doesn't have a solution is something like x+2 = x+3

If we subtract x from both sides, then we end up with 2 = 3, which is always false.

No matter what we plug in for x, the original equation will always be false. The right hand side is always 1 larger than the left side. So that's why we don't have any solutions here.

Side note: equations of this form are known as contradictions (or we could say the equation is inconsistent).

=====================================================

An example of something that has one solution is 3x+2 = 2x+7

Solving this equation leads us to...

3x+2 = 2x+7

3x-2x = 7-2

1x = 5

x = 5

To verify the solution, we plug it back into the original equation

3x+2 = 2x+7

3(5)+2 = 2(5)+7

15+2 = 10+7

17 = 17

We get the same thing on both sides, so we get a true statement. This confirms that x = 5 is the solution to 3x+2 = 2x+7.

=====================================================

An example of an equation with infinitely many solutions is 2x+4 = 2(x+2)

Notice how both sides are the same thing. The 2(x+2) distributes out to get 2x+4

Since we have the exact same identical expression on both sides, this ultimately means no matter what we plug in for x, we'll get a true statement. True statements (like the conclusion at the last section) are simply anything with the same number on both sides after simplifying everything.

Side note: equations of this form are known as identities

5 0
3 years ago
Could x = -5 be a solution to the inequality -6 < 3x + 9 < 21?
musickatia [10]

Answer:

<h2><u><em>x=−5<x<4</em></u></h2>

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Help need done fast pls.
Arada [10]
The total degrees of a triangle is 180.
So
37+63=100
And well
180-100=80
U=80
5 0
3 years ago
Read 2 more answers
What is the simplified value of the exponential expression 27 1/3 ?<br> 1/3<br> 1/9<br> 3<br> 9
lapo4ka [179]

Answer:

3

Step-by-step explanation:

27^1/3 = cuberoot(27) = 3

3 0
3 years ago
Read 2 more answers
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