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tatiyna
3 years ago
6

Which statement about 3(x2 – 4) is true?

Mathematics
1 answer:
atroni [7]3 years ago
7 0

Answer:

The expression is not completely factored.

Step-by-step explanation:

The expression of {x}^{2} - 4 can be broken up into two binomials:

[x - 2][x + 2]

Together, you have this:

3[x - 2][x + 2]

** There is alot of missing information to this question, but at least you know how to work this out.

I am joyous to assist you anytime.

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Solve 15/4 - 7x =9 (someone please answer )<br>​
patriot [66]

Answer:

<h2>x = -3</h2>

Step-by-step explanation:

<u>15 - 7x  </u>= 9

   4

-7x = 9(4) - 15

x = 21/-7

x = -3

proof:

<u>15 - 7(-3)  </u>= 9

   4

7 0
3 years ago
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Bob is reading a 445 page book. He has already read 157 pages. If he reads 24 pages a day, how long will it take him to finish t
Sever21 [200]

Answer:

12 days

Step-by-step explanation:

Set up an equation with y = mx + b, where m is the rate and b is the y-intercept (starting value)

Let x represent how many days it takes and y represent how many pages he read:

445 = 24x + 157

Solve for x:

288 = 24x

12 = x

So, it will take him 12 days to finish the book

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3 years ago
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Need help with questions 17 and 18
Pavlova-9 [17]
The answer to 17 is 18.6 and the 6 is repeating
6 0
3 years ago
Bridget purchased 3 pairs of shoes online. The total bill of $126.81 included a $7.50 shipping charge and 6% tax on the total pu
Alika [10]

Answer:

$37.

Step-by-step explanation:

Firstly, let's set the price of each pair of shoe to be x.

Since each pair of shoes costs the same, and there are three pairs, we can set the original price to be 3x.

Now, to apply the shipping charge, all we have to do is add 7.50 to 3x, getting 3x + 7.5.

Next, to apply a 6% tax, we can multiple the whole expression by (100% + 6%), getting (3x + 7.5) \cdot 106%.

Since the whole bill foots to a total of $126.81, we can set the final equation to be:

(3x + 7.5) \cdot 106\% = $126.81

(3x + 7.5) \cdot \frac{106}{100} = $126.81

3x + 7.5 = $126.81 \cdot \frac {50}{53}

3x = $119.6 - 7.5

3x = 112.1

x \approx \$37

Hope this helped!

6 0
2 years ago
Solve x2=22. Use a radical sign in each answer<br><br> x=? and x=?
Aleksandr-060686 [28]

Answer:

x=sqrt{22}

Step-by-step explanation:

4 0
3 years ago
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