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Yuliya22 [10]
3 years ago
8

What are the solutions to the equations x^2 + 3 = 124?

Mathematics
2 answers:
babunello [35]3 years ago
3 0
X^2=121
x=11 or x=-11
Mars2501 [29]3 years ago
3 0

Answer:

C. -11 and 11

Step-by-step explanation:

x^2 + 3 = 124

x^2 = 124 - 3

x^2 = 121

x = √121

x = 11 (or -11)

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I need some help with this math problem. I've had it explained to me two different ways. If x= -3 then what would be the answer
nadya68 [22]

Answer:

The square root of x will be evaluated first before the addition of 5. Hence (-3)^2 = 9 and 9 +5 = 14, as per your teacher's answer, which is correct. The answer would not be -4.

8 0
3 years ago
Read 2 more answers
A bag contains yellow marbles and red marbles, 23 in total. The number of yellow marbles is 4 less than 2 times the number of re
Orlov [11]
First let’s express the total number of marbles as such:
y(yellow marbles) + r(red marbles)=23; y+r=23

now let’s express the relation of yellow marbles to red marbles:
y=2r(2 times red marbles) - 4(4 less marbles); y=2r-4

since we figured out what y equals, we can plug into the first equation we created:
(2r-4)+r=23

now solve for r:
2r-4+r=23
combine like terms
3r-4=23
add 4 to both sides
3r=27
divide both side by 3
r=9

plug r back into first equation and solve for y:
y+9=23
subtract 9
y=14

there are 9 red marbles and 14 yellow marbles!


3 0
2 years ago
HELP PLEASE????????????????????
lora16 [44]

Answer:

20x - 8

Step-by-step explanation:

Since we have the length and height of the rectangle we just multiply each by 2. This is because the length is the same on both sides and the height is too. The equation would look like this:

(5x-4 + 5x -4) + (5x +5x) = 10x -8 + 10 x = 20x -8

5 0
2 years ago
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Equalvant Terms to 6(5x + 9y)
Fed [463]

The Answer Is 30x+54y

have an amazing day <3

3 0
2 years ago
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DanielleElmas [232]

Answer:

5

5

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Step-by-step explanation:

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