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Tom [10]
3 years ago
8

Simplify square root of 8y/share root of y

Mathematics
1 answer:
lozanna [386]3 years ago
8 0

Answer:

2\sqrt{2}

Step-by-step explanation:

We are required to simplify the following expression;

\frac{\sqrt{8y} }{\sqrt{y} }

Using the properties of radicals;

\frac{\sqrt{a} }{\sqrt{b}}=\sqrt{\frac{a}{b} }

The expression can be re-written as;

\sqrt{\frac{8y}{y}}=\sqrt{8}

Now;

\sqrt{8}=\sqrt{4*2}=\sqrt{4}*\sqrt{2}\\ \\2\sqrt{2}

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There are two values of a for which the equation 5x2+ax+7x+5=0 has only one solution for x. What is the sum of those values of a
JulsSmile [24]

Answer:

-14

Step-by-step explanation:

First of all, we know that 5x^2+ ax+7x +5=0 only has one root. That means that b^2 - 4ac=0, and we can use this to find the discriminant, ax + 7x.

Now, if we simplified 5x^2+ ax+7x +5=0, by dividing it all by 5, it would be x^2+(a+7)/5x + 1 = 0.

After, we can plug what we know into the formula, b^2 - 4ac=0. It would be:

(a+7)^2 / 25 - 4 = 0

(a+7)^2 / 25 = 4

(a+7)^2 = 100

Since this is a square root, a+7 can be both negative or positive.

a+7= 10, or a+7 = -10

a=3, or a=-17

The question asks for the sum of a, which is 3 + (-17) = -14

Therefore, the answer is -14.

:) have fun with your rsm problems, assuming you got this from the portal.

7 0
3 years ago
A center-seeking force related to acceleration is _______ force.
Sauron [17]
<span>A center-seeking force related to acceleration is centripetal force. The correct option among all the options that are given in the question is the first option or option "A". It is actually a force acting on a body that is moving in a circular path and its direction is towards the center. I hope the answer has helped you.</span>
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Oduvanchick [21]

Answer:

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Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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3 years ago
The rule that maps each domain value to its range value is f(x)= ___x.
kirill115 [55]

Answer:

f(x) = 1/2x

Step-by-step explanation:

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Check when x = 2

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3 0
4 years ago
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