2 years ago

Solve for x: 3x-10 = 2(x+6)

Mathematics

1 answer:

77julia77 [94]2 years ago

7 0

Answer:

x = 22

Step-by-step explanation:

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Scott drove 871 miles in 13 hours. At the same rate, how long would it take him to drive 469 miles?

olga55 [171]

871 miles ........... 13 hours

469 miles ............x hours

x = 469×13/871 = 7 hours

4 0

3 years ago

A boat travels 12 Mph in still water. It can travel 18 miles upstream in the same time that it can travel 24 miles downstream. W

quester [9]

Answer:

The current of the water is 1.714 mph.

Step-by-step explanation:

Let the boat in t hours can travel 18 miles upstream, and 24 miles downstream.

Therefore, if the speed of the boat in still water is 12 mph and that of water is x mph , then we can write

$\frac{18}{t} = 12 - x$ ........ (1) and

$\frac{24}{t} = 12 + x$ ............ (2)

Now, adding those two equations (1) and (2) we get,

$\frac{18}{t} + \frac{24}{t} = 24$

⇒ t = 1.75 hours.

Now, from equation (1) we get

$\frac{18}{1.75} = 12 - x$

⇒ x = 1.714 mph

Therefore, the current of the water is 1.714 mph. (Answer)

4 0

3 years ago

Please help don’t understand

const2013 [10]

The first one is congruent by ASA. The second does not have to be congruent, we don’t know enough.

5 0

3 years ago

Andrea had 32 problems to do for mathematics homework over a weekend. She did of the problems on Friday night, and on Saturday s

Arada [10]

Answer:

first dvide 32 by 3

Step-by-step explanation:

8 0

3 years ago

Which value satisfies the inequality x+3/4<8?

Veronika [31]

You want to isolate the x. So you can subtract both sides by 3/4 and get:
x<8-3/4

To do 8-3/4, you multiply the 8 by 4 to get a common denominator of 4.
32/4-3/4 which is 29/4 or 7 1/4

So your final answer is x<7 1/4 or any number less than 7 1/4

Hope this helps!

6 0

3 years ago