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OleMash [197]
3 years ago
5

Solve for x. 2x^2+3x-12=x^2+x-9

Mathematics
2 answers:
Aleks [24]3 years ago
6 0

Answer:

x=1,-3

Step-by-step explanation:

Sidana [21]3 years ago
4 0

Answer:

x = 1, x = -3

Step-by-step explanation:

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If LR = 12 and LP = 7, find PR. Explain.
sergiy2304 [10]

Answer:

  PR = 5 because LP + PR = LR according to the Segment Addition Postulate, and 7 + 5 = 12 using substitution

Step-by-step explanation:

The naming of the segments suggests that point P is between L and R, so that ...

  LP + PR = LR

This corresponds to the last choice.

_____

<em>Comments on the alternate interpretation</em>

On the other hand, if point L is between P and R, then the segments are PL and LR. The Segment Addition Postulate would tell you that ...

  PL + LR = PR

The Reflexive Property of Congruence would tell you that PL = LP. The Substitution Property would tell you LP can be substituted into this equation, making it ...

  LP + LR = PR

and by the commutative property, ...

  LR + LP = PR.

Multiple properties of addition and congruence are involved with this interpretation, which more or less matches the third choice. That is, the simple explanation of answer choice 3, by itself, is insufficient to explain why the length of PR should be considered to be 19, not 5.

5 0
3 years ago
Read 2 more answers
Solve for b:<br><br> 16b = 12<br> A. b = 28<br> B. b = 3/4<br> C. b = 4/3<br> D. b = 1/4
schepotkina [342]

Answer:

16b=12

Step-by-step explanation:

divide both sides by 16

so twelve divide 16 is B

8 0
2 years ago
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$1,000, 7% , 2years
Simora [160]

Answer:

$1,140, or $1,144.9

Step-by-step explanation:

70 is 7% of 1,000

70 x 2 = 140

140 + 1,000 = 1,140

Or, if you mean 7% compounded annually then....

1,070 after first year.

7% of 1,070 = 74.9

74.9 + 1,070 = 1,144.9

4 0
3 years ago
Please solve this, i will mark brainliest
Anton [14]

Answer:

k=-2

Step-by-step explanation:

Let's write the left hand side as a negative power, and 9 as a power of 3:

3^-^k=3^2 At this point, for the equality to still stand, the exponents have to be equal:

-k = 2 \rightarrow k=-2

7 0
2 years ago
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Which of the following systems of inequalities has point C as a solution?
Ede4ka [16]

Answer: A

Step-by-step explanation:

C lies below g(x) and f(x), so we need f(x) \leq 3x+4 and g(x) \leq -\frac{1}{2}x-5.

5 0
2 years ago
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