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ArbitrLikvidat [17]
3 years ago
9

A miner descended 1400 feet into a mine from the mine's entrance. While in the mine, he then rose 800 feet and then descended 45

0 feet. What was the miner's net gain or loss in altitude from the entrance of the mine? A. –1050 ft B. 2650 ft C. –2650 ft D. 250 ft
Mathematics
2 answers:
Semmy [17]3 years ago
8 0
Your answer is C. -2650
postnew [5]3 years ago
7 0
The correct answer is A.-1050
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Answer:

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Step-by-step explanation:

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4 years ago
5) Find the area of a rectangle<br> with points at (-8,5), (2,5),<br> (2,-3) and (-8,-3).
Lady bird [3.3K]

Answer:

80 units²

Step-by-step explanation:

Given <u>vertices</u> of a rectangle:

  • A = (-8, 5)
  • B = (2, 5)
  • C = (2, -3)
  • D = (-8, -3)

As points A and D share the <u>same x-coordinate</u>, and points B and C share the <u>same x-coordinate</u>, the difference between the different <u>x-coordinates</u> is the length of the rectangle:

\begin{aligned}\implies \textsf{Length} & = x_B-x_A\\& = 2-(-8)\\& = 2+8\\& = 10\; \sf units\end{aligned}

As points A and B share the <u>same y-coordinate</u>, and points C and D share the <u>same y-coordinate</u>, the difference between the different <u>y-coordinates</u> is the width of the rectangle:

\begin{aligned}\implies \textsf{Width} & = y_A-y_D\\& = 5-(-3)\\& = 5+3\\& = 8\; \sf units\end{aligned}

Therefore:

\begin{aligned}\textsf{Area of a rectangle} & = \sf width \times length\\&=8 \times 10\\&=80 \sf \; units^2\end{aligned}

7 0
2 years ago
Read 2 more answers
If NQZ ~ CBK, find BK<br><br> Look at picture
nevsk [136]

Answer:

BK=39/7

Step-by-step explanation:

because NQZ~CBK

so BK/QZ = TZ/KF

(4x+1)/(2x+7) = 27/45 = 3/5

5(4x+1) = 3(2x+7)

20x + 5 = 6x + 21

14x = 16

x = 8/7

=> BK = 4(8/7)+1 = 39/7

5 0
3 years ago
Write the percent as a fraction and as a decimal.<br> 372%<br> What is the fraction equivalent?
Ratling [72]

Answer:

fraction form- 372/100

decimal- 3.72

Step-by-step explanation:

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3 years ago
Simplify completely quantity 2 x squared plus 16 x plus 30 all over quantity 5 x squared plus 13 x minus 6.
Ludmilka [50]
(2x^2 + 16x + 30) / (5x^2 + 13x -6)
Start by factoring the numerator and denominator.
Cancel any like factors.

2(x^2 + 8x + 15)
2(x + 5)(x + 3) / (5x -2)(x + 3
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The third choice
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3 years ago
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