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DENIUS [597]
3 years ago
15

Plz help!!!!!!!!!!!!!!

Mathematics
1 answer:
Artist 52 [7]3 years ago
3 0

Answer:   a) 11

<u>Step-by-step explanation:</u>

\sqrt{x-2}=x-8\\\\\\\text{Square both sides:}\\(\sqrt{x-2})^2=(x-8)^2\\\\\\\text{Simplify:}\\x-2=x^2-16x+64\\\\\\\text{Subtract x and add 2 to both sides:}\\0=x^2-17x+66\\\\\\\text{Factor the quadratic equation:}\\0=(x-6)(x-11)\\\\\\\text{Apply the Zero Product Property and solve for x:}\\0=x-6\qquad 0=x-11\\x=6\qquad \qquad x=11\\\\\\\text{Verify:}\\\sqrt{6-2}=6-8\qquad \qquad \sqrt{11-2}=11-8\\\sqrt4=-2\qquad \qquad \qquad \quad \sqrt9=3\\2\neq-2\qquad \qquad \qquad \qquad 3=3

6 is NOT a valid solution,  11 IS a valid solution

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Answer:

-3

Step-by-step explanation:

3x5=15

+1(2-4x5)=2-20-18

15-18=-3

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What is 3 for 6 bagels for 24$
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12 bagels b/c 24/6=4 and 3*4=12
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Answer this really quick plzzzz
tangare [24]
A because 2(5) is 10 + 4(3) is 12 which makes 22 and 6(5) is 30 + 2(3)=6 which makes 36. Finally, both are now true with that ordered pair making it the answer.
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3 years ago
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A store has two different sizes of ice cream the smaller container cost 3.87 for 48 ounces the larger container cost 6.42 which
elena-14-01-66 [18.8K]

Consider the complete question is "A store has two different sizes of ice cream on sale this week. The smaller container costs $3.87 for 48 ounces. The larger container costs $6.42 for 128 ounces. which ice cream costs less per ounce?"

Given:

The smaller container costs $3.87 for 48 ounces.

The larger container costs $6.42 for 128 ounces.

To find:

Which ice cream costs less per ounce?

Solution:

We know that

\text{Cost per ounce}=\dfrac{\text{Total cost}}{\text{Number of ounces}}

Using this formula, we get

Per ounce cost of small container =\dfrac{3.87}{48}

                                                         =0.080625

                                                         \approx 0.08

Per ounce cost of larger container =\dfrac{6.42}{128}

                                                         =0.05015625

                                                         \approx 0.05

Since, 0.08 > 0.05 therefore, the per ounce cost of larger container is less.

5 0
3 years ago
Can some explain how to do this.
KatRina [158]

We can simplify the expression by using exponent properties, and we will see that the correct option is the fourth option.

<h3>How to simplify the expression?</h3>

Remember the exponent property:

\frac{a^n}{a^m} = a^{n - m}

Here we have the expression:

\frac{83.9*10^{12}*2.87*10^{-3}}{3.76*10^2}

We can reorder this to get:

\frac{83.9*10^{12}*2.87*10^{-3}}{3.76*10^2} = \frac{83.9*2.87}{3.76}*\frac{10^{12}*10^{-3}}{10^2}

The right side can be simplified to:

\frac{83.9*2.87}{3.76}*\frac{10^{12}*10^{-3}}{10^2} = 64.04*10{12 - 3 - 2} = 64.04*10^{7}

Now, we can move the decimal point one time to the left and increase the exponent by one, so we get:

6.404*10^8

Then we conclude that the correct option is the last one (where I rounded the expression to only 3 values after the decimal point).

If you want to learn more about scientific notation:

brainly.com/question/5756316

#SPJ1

3 0
2 years ago
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