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alexandr1967 [171]
3 years ago
14

What is (2.1 10^3) (4 10^ 7)?

Mathematics
1 answer:
brilliants [131]3 years ago
4 0
8.4×10^10 or 84000000000
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Answer:

5.441683e+23

Step-by-step explanation:

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△ABC≅△DEF, BC=4x−12, and EF=−3x+16. Find x and EF.
kirill [66]

x = 4 and EF = 4 ⇒ 3rd answer

Step-by-step explanation:

If two triangles are congruent, then

1. Their corresponding sides are equal

2. Their corresponding angles are equal

3. Their areas and perimeters are equal

∵ △ ABC ≅ △ DEF

∴ AB ≅ DE

∴ BC ≅ EF

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∵ BC = 4 x - 12

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∵ BC = EF

∴ 4 x - 12 = -3 x + 16

Let us solve the equation to find x

∵ 4 x - 12 = -3 x + 16

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Substitute the value of x in the expression of EF

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∵ x = 4

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Learn more:

You can learn more about congruence of Δs in brainly.com/question/3202836

#LearnwithBrainly

3 0
3 years ago
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Answer:

It will be answer choice D.

Step-by-step explanation:

It'll take the half the usual time because she is taking a road that get's her there 2 times faster, but also add 10 because she was 10 minutes late.

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