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Ede4ka [16]
2 years ago
11

.−3(4x + 3) + 4(6x + 1) = 43 What is the solution?

Mathematics
1 answer:
maks197457 [2]2 years ago
6 0

Answer:

  x = 4

Step-by-step explanation:

After you simplify the left side by eliminating parentheses and collecting terms, you have a 2-step linear equation.

  -3(4x +3) +4(6x +1) = 43 . . . . . . given

  -12x -9 +24x +4 = 43 . . . . . eliminate parentheses

  12x-5 = 43 . . . . . . . . . . . collect terms (now a 2-step equation)

  12x = 48 . . . . . . . . . . step 1, add the opposite of the unwanted constant

  x = 4 . . . . . . . . . . . step 2, divide by the coefficient of x

The solution is x = 4.

__

<em>Check</em>

  -3(4·4 +3) +4(6·4 +1) = 43 . . . . substitute for x

  -3(16 +3) +4(24 +1) = 43

  -3(19) +4(25) = 43

  -57 +100 = 43 . . . . . true

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What percent is 7.2 of 19.5
allochka39001 [22]

Answer:

36.92 but rounded it up its 37

Step-by-step explanation:

Solution for 7.2 is what percent of 19.5:

7.2:19.5*100 =

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Now we have: 7.2 is what percent of 19.5 = 36.923076923077

6 0
3 years ago
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A 1 km long train travelling at a speed of 60km/h enter a tunnel 1km long. What time will the train take to come out of the tunn
zysi [14]

Answer:

2 minutes

Step-by-step explanation:

The front of the train enters the tunnel and travels 1 km before the rear of the train enters the tunnel.  Thus, the total distance traveled by the front of the train is 2 km, and this is covered in a certain number of hours:

Since distance = rate times time, time = distance / rate.  In this particular case we have:

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3 0
3 years ago
Rename the number 720= tens
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6 0
3 years ago
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Need help ASAP. Thanks!
Jet001 [13]

Answer: 114

Step-by-step explanation:

To find the perimeter, you will find the distance around the shape by adding the numbers.

The is one missing side  and to find that side you will subtract  10 from 38.

38 - 10 = 28

Now add the them.

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6 0
3 years ago
PLEASE HELP!! HURRY BUT I DON'T WANT GUESSES
Lorico [155]
The square on the hypotenuse is skew and impossible to visually validate. There's nothing to sum. It is a simple calculation to note that <span><span><span>32</span>+<span>42</span>=<span>52</span></span><span><span>32</span>+<span>42</span>=<span>52</span></span></span><span>, but its picture doesn't 'say' that the angle between the 3 and 4 sided square must be 90 degrees.


</span>
7 0
3 years ago
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