Mathematics, 19.07.2019 21:30, bear342

Will give ! explain the differences between adding and multiplying radical expressions using 2 examples you create. explain it in an easy way to understand because everyone else made it sound complicated with a lot of symbols

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A radical expression is an expression that includes the root of some quantity. This can be a square root but it can be a cubed root or fourth root for example. Here are some examples:

$\sqrt{5}, 3 \sqrt{7} , 5 \sqrt{7}, -4 \sqrt{10}$

Multiplying Radicals
When we multiply two radical expressions you basically do this: multiply the numbers outside the radicals by each other and keep them outside the radical in the answer. Multiply the numbers under the radicals together and keep them under the radical sign in you’re answer. Simplify the radical in your answer if at all possible.

Let’s try it: $( \sqrt{5})(3 \sqrt{7})=3 \sqrt{35}$

Another example: $(5 \sqrt{8})(3 \sqrt{8})=15 \sqrt{64}=(15)(8)=120$

Adding Radicals
Adding radical is similar to adding expressions like 3x +5x. You need to have “like terms”. This means that we can only combine radicals that have the same number under the radical sign. When we add we add the numbers on the outside and keep that sum outside in our answer. We leave the number under the radical alone and include it in our answer just as it was.

Two examples:

$5 \sqrt{3}+7 \sqrt{3}=12 \sqrt{3}$

$-4 \sqrt{8}+2 \sqrt{8}=-2 \sqrt{8}$

If the number under the radical sign is different then you can’t combine them.

$3 \sqrt{5}+4 \sqrt{8}$ has to be left alone. You can’t combine them. It’s the same as 3x +4y you just leave them alone.

If you want a bit of vocabulary the number under the radical is called the radicand.

answered: Guest

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒ $y=\frac{+1}{+1}x+0$

or $y=\frac{-1}{-1}x+0$

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

answered: Guest

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

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Will give ! explain the differences between adding and multiplying radical expressions using 2 exa...