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Bezzdna [24]
3 years ago
11

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

3 0
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.

8 0
3 years ago
1/2ac2 where a =5 and b=2​
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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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40%

Step-by-step explanation:

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