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REY [17]
3 years ago
6

Amela put 15x- 4 gallons of gas in her car at the beginning of the week. She used 7x-3 gallons driving to work. Which of the fol

lowing choices represents the
number of gallons left in her car?

A) 22x+7
B) 22x-7
C) 8x+1
D) 8x-1
Mathematics
2 answers:
snow_lady [41]3 years ago
8 0

Answer:

D) 8x - 1

Step-by-step explanation:

Let's say that x = 5.  That would mean Amelia put 15(5) - 4 gallons of gas in her car, which equals 71 gallons.  She used 7(5) - 3 gallons driving to work, which is 32 gallons used.  71 - 32 = 39 gallons left.  

What else equals 39, you might ask?

8(5) - 1

40 - 1

39.

Marina86 [1]3 years ago
6 0

Answer:

D is the answer

Step-by-step explanation:

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3 years ago
Please help me, and please explain how you get to the answer.
Sliva [168]

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5 0
3 years ago
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wlad13 [49]

The given circle having two external tangents, according to circle

theorem, have the following values;

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<h3>How can the radial  length and angles be found?</h3>

r² + 1.6² = (0.4 + r)²

(0.4 + r)² - (r² + 1.6²) = 0

0.8·r - 2.4 = 0

0.8·r = 2.4

r = 2.4 ÷ 0.8 = 3

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y = 49°

From the two tangent angle theorem, we have;

m∠1 = ((82 + 98 + 82) - (360 - ((82 + 98 + 82)))) ÷ 2 = 82

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According to circle theorems, angle at the center is twice angle

subtended at the circumference.

m∠2 = (360 - (82 + 98 + 82)) ÷ 2 = 49°

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The length of the chord subtended by the arc <em>x</em> is equal to the length of

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Learn more about circle theorems applications here:

brainly.com/question/16879446

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Answer:

Step-by-step explanation:

3\frac{3}{5ax_{3} }

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