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Over [174]
3 years ago
13

PLEASE HELP I NEED THIS

Mathematics
1 answer:
aleksklad [387]3 years ago
7 0

Answer:

Answer is 18 degrees.

Step-by-step explanation:

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I need help with my algebra 2. I also want to know how to solve this.
Lisa [10]

Add 1 to both sides:

\sqrt{x+3} = x+1

In cases like this, we have to remember that a root is always positive, so we can square both sides only assuming that

x+1 \geq 0 \iff x \geq -1

Under this assumption, we square both sides and we have

x+3 = (x+1)^2 \iff x+3 = x^2+2x+1 \iff x^2+x-2 = 0

The solutions to this equation are

x = -2,\ x=1

But since we can only accept solutions greater than -1, we discard x=-2 and accept x=1.

In fact, we have

x=-2 \implies \sqrt{-2+3}-1=0\neq -2

and

x=1 \implies \sqrt{4}-1=1

which is the only solution.

4 0
3 years ago
What is the answer to 2x+3=-8 if<br> x=-8.
never [62]

Answer:

this makes no sence you said 2x+3=-8 if x =-8 then the answer would be

2x-8+3=-8 ??? that is not correct

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The function y = x + 7 is graphed in the coordinate plane. Which point will not be on the line?
kondor19780726 [428]
Plug in x-values and see which one has an incorrect y value.

(x, y)

x=0; y=0+7=7; CORRECT
x=2; y=2+7=9; INCORRECT
x=9; y=9+7=16; CORRECT
x=12; y=12+7=19; CORRECT

The point that is not on the online is (9, 16).
4 0
3 years ago
Math help What are the solutions​
Westkost [7]

Answer:

x² - 4x + 12

Step-by-step explanation:

x=2+2.82843i

x=2−2.82843i

6 0
3 years ago
Maybe a little more point will make you help me
Natasha_Volkova [10]

Answer:

SA = 76 yd²

Step-by-step explanation:

Use the formula given:

  • SA = 2(4)(2) + 2(4)(5) + 2(2)(5)
  • SA = 16 + 40 + 20
  • SA = 76

The units are yards²

SA = 76yd²

-Chetan K

5 0
2 years ago
Read 2 more answers
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