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Sati [7]
3 years ago
11

What are the solutions of 12 – x2 = 0? x = 2 StartRoot 3 EndRoot and x = Negative 2 StartRoot 3 EndRoot x = 3 StartRoot 2 EndRoo

t and x = Negative 3 StartRoot 2 EndRoot x = 4 StartRoot 3 EndRoot and x = Negative 4 StartRoot 3 EndRoot x = 6 and x = –6
Mathematics
2 answers:
krok68 [10]3 years ago
8 0

Answer:

±2  sqrt(3) = x

Step-by-step explanation:

12 -x^2 =0

Add x^2 to each side

12 -x^2+x^2 =0+x^2

12 = x^2

Take the square root of each side

±sqrt(12) = sqrt(x^2)

We know that sqrt(ab) = sqrt(a) sqrt(b)

±sqrt(4*3) = sqrt(x^2)

±sqrt(4) * sqrt(3) = x

±2  sqrt(3) = x

Nezavi [6.7K]3 years ago
5 0

Answer:

A)

x = 2 StartRoot 3 EndRoot and x = Negative 2 StartRoot 3 EndRoot

Step-by-step explanation:

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Twenty-five percent of the students had forgotten the year of the Declaration of Independence. If 57 students had not forgotten,
Phantasy [73]

Answer:

76,

Step-by-step explanation:

If you divide 57 by 3, you get 19. If you times 19 by 4 that is the total number of students there were in all.

4 0
3 years ago
The density of salt is 80 pounds per cubic foot (lb/ft3). 1 pound (lb) is approximately 0.4536 kilogram (kg). 1 cubic foot (ft3)
Leto [7]

Answer: Density = 1,282.26 kg/m^3

Step-by-step explanation:

Density =  80 lb/ft^3

We know that:

1lb = 0.4536 kg.

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then we can write:

1 = (0.4536kg)/(0.0283 m^3)*(1ft^3/lb)

we can multiply our equation by this, and it wont be affected, then we have:

Density = 80 lb/ft^3 = 80 lb/ft^3 (0.4536kg)/(0.0283 m^3)*(1ft^3/lb)

Density = 1,282.26 kg/m^3

6 0
3 years ago
Need help!
Leya [2.2K]

9514 1404 393

Answer:

  • clockwise
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  • origin

Step-by-step explanation:

The answer statement tells you the transformation is a rotation. The original is in the 2nd quadrant, and the image is in the 1st quadrant, representing a clockwise rotation. AB points east, while A'B' points south, a rotation of 90° (clockwise). Each image point is the same distance from the origin as its preimage point. The origin is the center of rotation.

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∆ABC is transformed by a <u> clockwise </u> rotation <u> 90 </u> degrees with a center at the <u> origin </u>.

6 0
3 years ago
The price of an item has been reduced by 35%. The original price was $60. What is the price of the item now ?
Lunna [17]

Answer:

the answer is $39.00

Step-by-step explanation:

5 0
3 years ago
Can somebody tell me what the answer to y-13=8 is? Please and thank you.
makvit [3.9K]

Answer:

Y=21

Step-by-step explanation:

add 13 on both sides you get Y=21

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2 years ago
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