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Arlecino [84]
3 years ago
11

What is 8×∙(−7)∙3 = Because I need it right now for my HOMEWORK, so if you know the answer please tell me what it is.

Mathematics
1 answer:
Romashka [77]3 years ago
3 0

Answer:

-168

Step-by-step explanation:

8 × -7 × 3

-56 × 3

-168

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two families are saving up for a summer trip the smith family originaly has 1000 dollars and will save 50 dollars every week the
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1000 + 50x = 500 + 75x

First move 500 by subtracting it from 1000.
500 + 50x = 75x

Now subtract 50x from 75x.
500 = 25x

Then divide 500 by 25.
20 = x

They would've saved the same amount($2,000) on the 20th week.




5 0
2 years ago
A domain of [-4, -2, 1​
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5 0
3 years ago
A goat enclosure is in the shape of a right triangle. One leg of the enclosure is built against the side of the barn. The other
Sonbull [250]

Answer:

The lengths are

8 + 8[root]3 , 12 + 8[root]3 and 20 + 8[root]3.

Step-by-step explanation:

Let the side against the barn be xft

We were told that the adjacent side is 4ft more than the side against the barn. This means it has a length of (x + 4)ft.

Lastly, we are told that the hypotenuse is 8ft longer than the side along the barn I.e (x + 4 + 8)ft = ( x + 12)ft.

Since the three lengths form a triangle, the square of the hypotenuse equals the square of the adjacent side plus the square of the opposite side. This is the pythagoras' theorem.

Mathematically, this can be written as follows:

(x + 12)^2 = x^2 + (x + 4)^2

This yields x^2 + 24x + 144 = x^2 + x^2 + 8x + 16

x^2 + 24x + 144 = 2x^2 + 8x + 16

Rearranging this will yield:

x^2 - 16x - 128 = 0

Using the quadratic formula yields the following values for x :

8 - 8[root]3 and 8 + 8[root 3]

Since the first is negative, we discard it and the only correct value of x is 8 + 8[root]3

Now the other length is 12 + 8[root]3 and 20 + 8[root]3.

4 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=3x-5%2B7x%2B11" id="TexFormula1" title="3x-5+7x+11" alt="3x-5+7x+11" align="absmiddle" class="
mars1129 [50]

Answer:

10x + 6

Step-by-step explanation:

3x - 5 + 7x + 11

10x - 5 + 11

10x + 6

8 0
2 years ago
Read 2 more answers
enrollment in the ski/snowboard club increased by 30% this year. there are now 182 students in the club. how many students were
user100 [1]
Increasing by 30% results in multiplication by 130/100, or 13/10.  Setting the original amount of students to x, we write the equation:

13x/10=182

We multiply by 10 for a result of:

13x=1820

Dividing by 13, we have:

x=140

Thus, 140 students were in the club last year.
8 0
3 years ago
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