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nadya68 [22]
4 years ago
9

What is the answer to number 18?

Mathematics
2 answers:
Rashid [163]4 years ago
8 0
The answer to your problem is C. You start out at zero. The red line goes from 0 to 3, hinting that the first part of your expression is a positive three. The blue arrow points towards the -4. The difference between 3 and -4 is 7, and since the line goes backwards, that means that the 7 in your expression is actually a negative. This provides you with answer C: 3-7.
Serga [27]4 years ago
3 0
I bealive it is b. ( I had the exact same 7 th grade homework page ad u today;)
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Remove the parentheses and simplify the expression 3(2x+3)-6
astra-53 [7]
First multiple everything in the parentheses by
3
3 (2x+3)-6=
3(2x)+3(3)-6=
6x+9-6
then add together like terms
6x+9-6=
6x+3
so 6x+3 is your answer
7 0
3 years ago
Read 2 more answers
Help needed ! 13 - 2(2x + 1) = 1 ?
kirill115 [55]

Answer:

x = ¹⁰⁄₄,⁵⁄₂, or 2.5

Step-by-step explanation:

Given: 13 - 2(2x + 1) = 1

1. Distribute -2 through the parentheses:

⇒ 13 - 2(2x + 1) = 1

⇒ 13 + (-2)(2x) + (-2)(1) = 1

13 - 4x - 2 = 1

2. Combine like terms:

⇒ 13 - 4x - 2 = 1

⟹ 11 - 4x = 1

3. Subtract 11 from both sides:

⇒ 11 - 11 - 4x = 1 - 11

⟹ -4x = -10

4. Divide both sides by -4:

⇒ -4x ÷ -4 = -10 ÷ -4

⟹ x = ¹⁰⁄₄,⁵⁄₂, or 2.5

5. Check your work:

⇒ 13 - 2(2x + 1) = 1

⇒ 13 - 2(2(2.5) + 1) = 1

⇒ 13 - 2(5 + 1) = 1

⇒ 13 - 2(6) = 1

⇒ 13 - 12 = 1

⟹ 1 = 1 ✔

Learn more here:

brainly.com/question/17139226

brainly.com/question/26315061

5 0
2 years ago
Read 2 more answers
What is the measure of x
Dafna1 [17]

Answer:

58 degrees

Step-by-step explanation:

XYZ is 90 degrees. XYO is 32 degrees. Angle x takes up the space leftover in the right angle, so simply subtract 32 from 90.

90-32= 58

Hope this help! (if it does pls consider giving me brainliest)

7 0
2 years ago
What is the equation of a line with the slope of 4 and an x-intercept of -10?
wariber [46]
It would be C if you mean y-intercept
5 0
3 years ago
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An iron ion has 26 protons and 23 electrons. Electrons have a charge of -1 and protons have a charge of +1. What is the charge o
riadik2000 [5.3K]
There are 3 more protons than electrons, so the net charge is +3. You can find this by doing 26+(-23)=3.
7 0
3 years ago
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