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inessss [21]
3 years ago
5

Simplify the expression (7x² - 3x) + (11x² - x - 7) A. 18x² + 2x + 7 B. 4x² - 4x - 7 C. 18x² - 2x - 7 D. 18x² - 4x - 7

Mathematics
2 answers:
IRINA_888 [86]3 years ago
7 0

Answer: D.

Step-by-step explanation:

Luba_88 [7]3 years ago
7 0

Answer:

  1. D.18x square-4x-7

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In March 1999, Bertrand Piccard and Brian Jones attempted to become the first people
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Answer:

Distance traveled= 41968.4 km

The domain of the function is t

t(h)= 478

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Step-by-step explanation:

the distance that they traveled in kilometers, d, can be modeled by

d(t) = 97.8t

where t is the time in hours

They traveled a total of 478 hours.

Distance traveled d(t)

d(t) = 87.8(478)

d(t) = 41968.4

Distance traveled= 41968.4 km

The domain of the function is t

t(h)= 478

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Romashka [77]

Answer:

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Step-by-step explanation:

6 0
3 years ago
HELP ASAP!!!<br> In triangle OPQ, U is the centroid. If QU = 8, find QR
scZoUnD [109]

Applying the centroid theorem, the length of QR is: 12.

<h3>What is the Centroid Theorem?</h3>
  • According to the centroid theorem, the centroid (the point where the three medians intersect) is 2/3 of the distance from the midpoint of the a side to each vertex opposite vertex of the triangle.

Given:

QU = 8

QU = 2/3(QR)

  • Substitute

8 = 2/3(QR)

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24 = 2(QR)

QR = 12

Therefore, applying the centroid theorem, the length of QR is: 12.

Learn more about the centroid theorem on:

brainly.com/question/20627009

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