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Artyom0805 [142]
4 years ago
7

Solve the equation using square roots. 3x2 – 27 = 0

Mathematics
2 answers:
Elza [17]4 years ago
8 0

Answer:

C. Plus or minus 3

Step-by-step explanation:

Take a GCF of 3 out of both terms in the binomial. You'll get 3*(x^2-9)=0. Then use FOIL to get the binomials (x+3) and (x-3). You're answers will  be -3 and 3

Scrat [10]4 years ago
4 0

Answer:

C, Plus or minus 3

Step-by-step explanation:

to solve 3x² - 27 = 0, we want to get the x by itself, so lets add 27 to both sides.

3x² = 27 < divide both sides by 3 to get x alone

3x²/2 =x²

27/3 = 9

x² = 9 < we can use the square-root property and square both sides of the equation to get x alone. we use the ± because there are 2 possible solutions to a square rooted number

√x² = x

√9 = 3

x = ±3

looking at our answer choices, the correct answer is C

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Answer:

x = 67

Step-by-step explanation:

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∠ CRQ and ∠ CRS are adjacent angles and supplementary, that is

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7 0
3 years ago
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krek1111 [17]

Answer:

34%

Step-by-step explanation:

According to the empirical rule, 68% of all of the data in a normal distribution falls within one standard deviation of the mean.

Applying to this particular case, 68% of the requests fall within (50 - 7) and (50+ 7). The percentage of requests from 43 to 50 is equal to the percentage of requests from 50 to 57.

Therefore, the percentage of light bulb replacement requests numbering between 50 and 57 is 68/2 =  34%.

8 0
4 years ago
PLEASE I'm DESPERATE!. Find a, b, c, and d such that the cubic . f(x) = ax3 + bx2 + cx + d. satisfies the given conditions.. Rel
dimulka [17.4K]
We are given with the equation <span>f(x) = ax3 + bx2 + cx + d

Substituting, (3,11) 
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There are 4 equations, 4 unknowns: answer is 
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3 years ago
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tangare [24]

Answer:

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Ari likes 3 oz caramel for 5 scoops ice cream.

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8 0
3 years ago
1
skelet666 [1.2K]

Step-by-step explanation:

f°g=f(g(x))

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Hope that helps :)

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