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Arte-miy333 [17]
3 years ago
10

5log2(3x+7)=0 help!!

Mathematics
1 answer:
alisha [4.7K]3 years ago
3 0
<span>x≈1.52065556,<span>−<span>0.92065556</span></span></span>
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Linear system word problem
soldi70 [24.7K]
Good job, you got the equations! XD

I'll just help you solve

Multiply the 2nd row by 9
<span>9x+9y=117</span>
<span><span><span>9x+27y=207

</span></span></span>Subtract the 2nd row from the 1st row
<span><span><span>−18y=−90
</span></span></span>Divide both sides by <span>−18</span>
<span><span><span>y=<span><span>−90/</span><span>−18
</span></span></span></span>Two negatives make a positive
<span><span>y=<span><span>90/</span><span>18</span></span></span><span>​​</span></span><span>
y = 5

Substitute 5 into an equation
9x+9(5)=11<span>7
</span>9x+45=11<span>7
</span>Subtract <span>45</span> from both sides
<span><span><span>9x=117−45

</span></span></span>9x=7<span>2
</span>Divide both sides by <span><span>9</span></span>
x = ___

Hope this will help​​</span></span>

3 0
3 years ago
An irregular polygon is shown below:
elena-14-01-66 [18.8K]
4*2=8, 4-2=2, 2*9=18, 18+8= 26
26 is the answer
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3 years ago
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HALP ME WITH THIS MATH PLSS
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The answer is 63/5ft long of the actual car. Hope this helps :)
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Find the lateral surface area of the triangular prism.
Aleks [24]

Answer:

is it A?

Step-by-step explanation:

I think it's A because no one has answered!

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D is 13. What is the length of the line.
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D

Step-by-step explanation:

You have to use pythagorean theorem to solve this.

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2 years ago
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