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3 years ago

What is the result when (2x-5)^2 is subtracted from 8x-6?

Mathematics

1 answer:

pentagon [3]3 years ago

8 0

Answer:

-2x^2+8x-31

Step-by-step explanation:

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In order to select ne board members the french club heald a election 3 members voted in the election. And 7 did not vote what pe

igor_vitrenko [27]

Answer:

30% members have voted.

Step-by-step explanation:

Given:

Number of members voted = 3

Number of members didn't vote = 7

We need to find what percentage of people voted.

Solution:

First we will find the total number of members in the election.

Now we can say that;

The total number of members in the election is equal to sum of Number of members voted and Number of members didn't vote.

framing in equation form we get;

The total number of members in the election = $7+3=10$

Now we will find the percentage of people voted.

So we can say that;

Percentage of members voted can be calculated by dividing Number of members voted from The total number of members in the election and then multiplying by 100 we get;

Percentage of members voted = $\frac{3}{10}\times100 = 30\%$

Hence 30% members have voted.

8 0

3 years ago

N² + 14 = 12n<br>how do I solve by quadratic formula

inysia [295]

Answer:

n = 6 + $\sqrt{22}$ or n = 6 - $\sqrt{22}$

Step-by-step explanation:

We can solve this equation using the quadratic formula OR Completing the Square method.

n² + 14 = 12n

rearrange : n² - 12n + 14 = 0

here a= 1 , b = -12, c = 14

the quadratic formula says: x = - b/ (2a) + root(b^2 - 4ac) / (2a)

or x = - b/ (2a) - root(b^2 - 4ac) / (2a)

x = - (-12)/ (2) + root((-12)^2 - 4*14) / (2)

x = 6 + root (144 - 56) / 2

x = 6 + root(88)/2

x = 6 + root(4*22) / 2

x = 6 + 2*root(22)/2

x = 6 + root(22) = 6 + $\sqrt{22}$

so x =6 + $\sqrt{22}$ or x = 6 - $\sqrt{22}$

In this case x = n

n = 6 + $\sqrt{22}$ or n = 6 - $\sqrt{22}$

3 0

3 years ago

Read 2 more answers

Savings account deposit:$1,400rate:5%per year time:3 years

marysya [2.9K]

1610 if without interest

7 0

3 years ago

If the mean height of college males was 70" with a standard deviation of 3", approximately what percentage of college males woul

ozzi

Multiply 3 & 70 and divide by the answer of 6'1 6'4 you multiply them then your answer

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3 years ago

Stretch your thinking rewrite this sentence using the word fewer: Carey reads 10 more pages than Lucey .

Free_Kalibri [48]

Lucy read 10 fewer pages than Carey

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3 years ago