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Kazeer [188]
3 years ago
5

What is the value of q in the equation? A) -10/7 B) 10/7 C)6 D) 10

Mathematics
2 answers:
cricket20 [7]3 years ago
6 0

q=10

Remove the radical by raising each side to the index of the radical

Hope this helps!

Galina-37 [17]3 years ago
3 0

Answer:

D) 10

Step-by-step explanation:

In order to solve for X in this equation you first have to elevate to the square both sides of the equation:

(\sqrt{4q-2})^{2} =(\sqrt{3q+8}) ^{2}

Now you just have to solve the equation for X.

\\4q-2=3q+8\\4q-3q=8+2\\q=10

Now we know that the value of q=10.

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F(x)=2x2+x+1<br> what is the value of f (-3)
chubhunter [2.5K]

Answer:

16

Step-by-step explanation:

First, we plug in -3 in place of x...

f(x) = 2(-3)^2 + (-3) + 1

Then, we simplify each indidvidual expression...

f(x) = 18 - 3 + 1

Finally, we add/subtract all the values to get our answer...

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stiks02 [169]

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Step-by-step explanation:

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3 years ago
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UPS charges $7 for the first pound, and $0.20 for each additional pound. FedEx charges $5 for the first pound and $0.30 for each
grigory [225]

Answer:

1. 20 pounds

2. $11

Step-by-step explanation:

To set this up, you have to use a system of equations. It would look like this, where p is pounds and t is total cost:

UPS: t=7+0.20p

FedEx: t=5+0.30p

In order to solve a system of equations you must either a.) graph it, or b.) set them equal to each other.

If you graph it, the answer is where the two lines intersect.

If you set them equal to each other, solve it.

I will set them equal to each other in this:

7+0.20p=5+0.30p

The first step in a problem like this, where there's the same variable on both sides, is to subtract the smaller variable from both sides. In this case, it is  0.20x. That would turn the equation into:

7=5+0.10p

After that, you must solve it like a regular two-step equation.

Start by subtracting 5 from both sides:

2=0.10p

Now, you must divide both sides by 0.10.

\frac{2}{0.10}=\frac{0.10p}{0.10}

That would give us:

20=p

This means that in order for the prices to be the same, the package must be 20 pounds.

Now in order to find the total cost, you must plug 20 into one of the equations. It doesn't matter which, since they both equal the same. I will plug it into the FedEx equation:

t=5+0.30(20)

Now you can just use a calculator and solve that or do it by hand. Multiply 0.30 by 20, to get 6, then add 5, which equals 11.

You should get: t=11.

This means that the total cost, when the costs are the same for both FedEx and UPS, is $11.

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3 years ago
Y=2(x+4)+5 I need help with this question
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When simplified, y=2(x+4)+5 equals y=2x+13

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The answer is B. You are welcome.
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