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denpristay [2]
3 years ago
10

Help Please!!

Mathematics
1 answer:
iren2701 [21]3 years ago
4 0

Answer:

50 miles per hour

Step-by-step explanation:

Here,

Time=  8 hours

Distance=400 miles

The speed is calculated by dividing the distance by time.

So,

Average Speed=Distance/Time

=  400/5

=50 miles per hour

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Suppose you know that ∠S and ∠Y are complementary, and that m∠S = 4(m∠Y) − 185°. Find m∠Y.
alexira [117]

Answer:

Step-by-step explanation:

so S and Y are complementary...that means when added, they equal 90 degrees.

S + Y = 90

S = 4Y - 185

4Y - 185 + Y = 90

5Y - 185 = 90

5Y = 90 + 185

5Y = 275

Y = 275 / 5

Y = 55 <===== angle Y is 55

S + Y = 90

S + 55 = 90

S = 90 - 55

S = 35

6 0
3 years ago
Edward is taking a trip. The distance
Grace [21]

Answer:

67.5 miles

Step-by-step explanation:

If 1 cm represents 15 miles, then 4.5 cm represents 4.5 * 15 miles.

4.5 * 15 miles = 67.5 miles

Answer: 67.5 miles

3 0
3 years ago
Half the difference of a number and 18 is equivalent to -25. find the number
KonstantinChe [14]

Answer:

Hi there!

Your answer is:

the number is 68

Step-by-step explanation:

(18-n) /2 = -25

×2

(18-n) = -50

-18

-n = -68

/-1

n= 68

Plug it back in!

(18-68) /2 = -25 ???

-50/2 = -25 ✓✓✓

Hope this helps

3 0
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d ^{-1} (x)=2+ \frac{x}{2}
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