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dimulka [17.4K]
3 years ago
7

Please help I don't get this question

Mathematics
2 answers:
tiny-mole [99]3 years ago
7 0

Answer:

10x+30

Step-by-step explanation:

Distributive property is distributing what is in the parentheses.

To do that on this problem you have multiply each of these numbers by 10!

10 times x is 10x

10 times 3 is 30

Put them back together and you get 10x+30!

I hope this helps, and have a great day! :)

P.S. If you need a better explanation I can help. I just didn't want to make this to long.  :D

ahrayia [7]3 years ago
6 0
The first one: 10x+30
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Find the area of the iscoseles triangle first answer=brainliest
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Answer:

60cm^{2}

Step-by-step explanation:

so first we need to find the height so by splitting the isosceles triangle into two right-angled triangles and then applying Pythagoras' Theorem to one of them.

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h=\sqrt{144}

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We now know the height of the triangle and can use this to go back and find the area of the isosceles triangle.

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3 years ago
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3 years ago
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Factor 20x2 + 25x – 12x – 15 by grouping. 1. Group terms with common factors. 2. Factor the GCF from each group. 3. Write the po
RUDIKE [14]
<span>Step 1:
</span>
<span> (((22•5x2) + 25x) - 12x) - 15)))

</span>
<span>The first term is, <span> <span>20x2</span> </span> its coefficient is <span> 20 </span>.
The middle term is, <span> +13x </span> its coefficient is <span> 13 </span>.
The last term, "the constant", is <span> -15



</span></span>
<span>step 2 above,  -12  and  25 
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Step-4 : Add up the first 2 terms, pulling out like factors :
                    4x • (5x-3)
              Add up the last 2 terms, pulling out common factors :
                    5 • (5x-3)
Step-5 : Add up the four terms of step 4 :
                    (4x+5)  •  (5x-3)
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5 0
3 years ago
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What is this proportion 3/4=16/x
andrew-mc [135]

Answer:

x = 21

Step-by-step explanation:

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3 years ago
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