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yaroslaw [1]
3 years ago
10

8 + 5n = -72 Solve the equation.

Mathematics
2 answers:
HACTEHA [7]3 years ago
6 0
<span>8 + 5n = -72
5n = -72 - 8
5n = - 80
n = -80/5
n = -16</span>
Ray Of Light [21]3 years ago
3 0
N is -16 5 times -16 equals -80 plus 8 equals -72
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Gina wilson unit 6 homework 4 <br> help with 6,8,and9
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Answer:

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Step-by-step explanation:

Q6. Solve for x

<u>Use ratios of similar sides</u>

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Q8

If ratios are same, the lines are parallel

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Yes, lines are parallel

Q9

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Incorrect, lines are not parallel

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2 years ago
Find the value of s. Write your answer as a decimal number.<br><br> 6<br> s<br> 7<br><br> s =
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The value of s would be 6 or 7
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2 years ago
N order to write an expression like (5x + 4)3 in expanded form, it helps to look at (5x + 4) as just one number, n.
Vladimir79 [104]

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The table compares two countries and two products. A 4-column table has 2 rows. The first column is labeled country with entries
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8 0
2 years ago
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Two planes start flying towards each other simultaneously from two different cities. The distance between the cities is 960 mile
ANTONII [103]

Answer:

257.5 mph

332.5 mph

Step-by-step explanation:

The initial distance between the two planes is 960 miles, while the final distance (after t=1.5 h) is 75 miles, so the total distance covered by the two planes in 1.5h is

d=960-75=885 miles

Calling v1 and v2 the velocities of the two planes, we have the following equations:

(1) v_1 = v_2 + 75 --> velocity of plane 1 exceeds velocity of plane 2 by 75 mph

(2) v_1 t+ v_2 t=885 --> the total distance covered by the two planes is 885 miles (t=1.5 h is the time, and the products v1 t and v2 t represent the distance covered by each plane)

Substituting t=1.5 h, the second equation becomes:

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By substituting (1) into this last equation, we find:

(v_2+75)+v_2 = 590\\2v_2 + 75 = 590\\2v_2 = 515\\v_2=257.5

And substituting this back into eq.(1), we find

v_1 = 257.5 + 75=332.5

So, the speeds of the two planes are

257.5 mph

332.5 mph



3 0
3 years ago
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