3 years ago

Determine if 9x2− 12x− 4 is a perfect square trinomial and factor.

Mathematics

1 answer:

slava [35]3 years ago

5 0

Sorry I don’t know but I tried

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WILL GIVE BRAINLYIST

marysya [2.9K]

Answer:

64 degrees

Step-by-step explanation:

Since the triangles are similar they have the same angle measures

$\frac{PR}{PQ} =\frac{SU}{ST}$ $\frac{21}{14}= \frac{6}{4}$

∠P = ∠S ∠R =∠U ∠Q=∠T

We know 2 of the angle measures: ∠S and ∠R, and since they are similar we know ∠P and ∠U

In triangles the sum of all angle measures is always 180 degrees, so we can solve for ∠Q with this formula

$A+B+C=180$

$46+70+C+180$

$116+C=180$

subtract 116 from both sides

$C=64$

Therefore ∠Q is equal to 64 degrees

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3 years ago

The combined weight of the people in the elevator is 49% of the 3,025 pound capacity. Which would be The best way to estimate th

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Answer:

Around 1,500 pounds

Step-by-step explanation:

Because you said "estimate," I will be estimating this.

49% rounds up to 50%

3,025 rounds down to 3,000

50% of 3,000 is 1,500 pounds.

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3 years ago

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I’ll assume the c is b. (1/2) x (5) x (2) x (2) is 10

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Step-by-step explanation:

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