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3 years ago

The product of 8 and a number, decreased by 22 is 186. What is the number?

Mathematics

2 answers:

ZanzabumX [31]3 years ago

4 0

Answer:

Step-by-step explanation:

Let's make an equation for this:

(8 * x) - 22 = 186

Let's simplify this a little bit by reversing it:

186 + 22 = 8 * x

186 + 22 = 208

208 = 8 * x

Let's reverse it again:

x * 8 = 208

208 / 8 = 26

x = 26

So, the number is 26

RSB [31]3 years ago

3 0

Answer:

The "number" is 26

Step-by-step explanation:

if x is the number...

8x - 22 = 186

8x - 22 + 22 = 186 + 22

8x = 208

x = 26

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John drove to Daytona Beach, Florida, in hours. When he returned, there was less traffic, and the trip took only hours. If John

olga55 [171]

Question: John drove to a distant city in 5 hours.

When he returned, there was less traffic and the trip took only 3 hours.

If John averaged 26 mph faster on the return trip, how fast did he drive each way

Answer:

For the first trip he drove at a speed of 39 mph

For the second trip he drove at a speed of 65 mph

Step-by-step explanation:

Let the distance for both journey be Z because they are equal.

Let the speed for the first journey be X

Let the speed of the second journey be Y

Formula for speed = distance ÷ time

For the first journey the speed X = Z ÷ 5

For the second journey the speed Y = Z ÷ 3

Since John averaged 26 mph faster in the second trip than the first trip due to traffic, it means that the difference in speed between the first & second trip is 26 mph

Difference in speed = (Z÷3) - (Z÷5) = 26

subtracting both results to (5Z-3Z) ÷ 15 = 26

Upon cross multiplication

2Z = 390

Z = 390÷2 = 195 miles

Therefore speed for first journey = 195 ÷ 5 = 39 mph

Speed for second journey = 195 ÷ 3 = 65 mph

To verify, 65 - 39 = 26 mph

8 0

3 years ago

How are part to part ratios different from part to whole ratios?

Zina [86]

Answer:

Part to part ratios are comparing two different things that sum up to its whole, and part to whole ratios are a part of something compared to the whole thing.

Step-by-step explanation:

It's kinda hard to explain..

8 0

3 years ago

A family is driving 550 miles to their grandmother's house. They have already driven 350 miles.

densk [106]

Answer:

So the answer is A or B

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

THX SO MUCH Rohanfighter

sdas [7]

Part C:

Total = T
Hours = H

T = 7H (meaning that per hour, Tiya makes $7, and depending on the amount of hours is her total).

Part B: Gathering from the top, let y = Total, and x = hours

y = 7x

Plug in numbers in x to find the total. Simplify by multiplying.

y = 7(2)
y = 14
(ordered pairs: (x,y) = (2,14))

y = 7(5)
y = 35
(ordered pairs: (x,y) = (5,35))

y = 7(7)
y = 49
(ordered pairs: (x,y) = (7,49))

Part A: Create two variables. Dependent means that it needs another variable to find out what the answer is (the total, in this case). The Independent is the one that can stand alone (the hours, in this case)

Independent: # of hours
Dependent: total # of money made.

hope this helps

3 0

3 years ago

-9 + 8.3 (adding rational numbers) ! show how u get the answer !

Rainbow [258]

Answer:

-0.7

Step-by-step explanation:

● -9 + 8.3

Notice that 8.3 = 8 + 0.3

● -9 + (8 + 0.3)

● -9 + 8 + 0.3

-9 + 8 is -1

● (-9 + 8) + 0.3

● -1 + 0.3

-1 is (-0.3 -0.7)

● -0.3 - 0.7 +0.3

● -0.7

4 0

3 years ago