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emmasim [6.3K]
2 years ago
10

Solve the equation 7x=3^2-1

Mathematics
1 answer:
Deffense [45]2 years ago
3 0

Answer:

15

Step-by-step explanation:

7x+3^2-1

3^2=9-1=8

7x+8

Solution

7x+8

7+8=<u>15</u>

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Alex types 3 pages in the same amount of time that Erica types 4.5 pages. If Alex and Erica start typing at the same time, how m
Archy [21]

Answer:

12.5

Step-by-step explanation:

4.5 - 3 = 1.5, so 11 + 1.5 = 12.5

7 0
3 years ago
Two possible solutions of are -7 and 1. Which statement is true?
quester [9]

We can plug those values into the equation, and if the answer is incorrect, we'll know if either one is extraneous.

√11 - 2(-7) = √(-7)^2 + 4(-7) + 4

√25 = √25

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The first solution, -7, makes the equation true, and so it is not extraneous.

√11 - 2(1) = √(1)^2 + 4(1) + 4

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The second solution, 1, makes the equation true, and so it is also not extraneous.

<h3>The correct option is D, neither solution is extraneous. </h3>
4 0
3 years ago
PLEASE HELP!! SOON AS POSSIBLE.
Klio2033 [76]
2/15

90 ÷ 6 = 15

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7 0
3 years ago
The additive inverse of 7 19 − is <br><br> (a)- 7/ 19 (b) 7 /19 (c) 19/ 7 (d) 19 /7​
Dafna11 [192]

Answer:

19/7

Step-by-step explanation:

The additive inverse of 7/19=1 : 7/19= 19/7

3 0
3 years ago
Barnard’s Star is approximately 35,133 billion miles from Earth. What is 35,133 billion in scientific notation?
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C


Mark brainliest please


Hope this helps you
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