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creativ13 [48]
3 years ago
7

Plz help on rationalising surds

Mathematics
1 answer:
Fittoniya [83]3 years ago
3 0
(√5 + 3)² / √20=
((√5 + 3)² / √20)(√20/√20)=
(√20(√5 + 3)²) / (√20)²=
√20(5+6√5+9) /20=
√20 (14+6√5) /20=
(14√20 +6√100) /20=
(14√20 +60) / 20=
(14(√4√5) + 60) /20=
(14(2)(√5)+60) / 20=
(28√5+60) /20=
(7√5+15) / 5

Answer:(√5 + 3)² / √20= <span>(7√5+15) / 5</span>
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is going to plant y vegetable seeds in one garden and 3y+8 vegetable seeds in another. How many seeds is Frank going to​ plant?
givi [52]

Answer:

4y + 8 vegetable seeds

General Formulas and Concepts:

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Step-by-step explanation:

We know that Frank has 2 gardens, one with <em>y</em> vegetable seeds and another with 3<em>y</em> + 8 vegetable seeds. If we are trying to find the <em>total</em> amount of seeds planted, we must add the 2 gardens together:

Garden 1: <em>y</em>

Garden 2: 3<em>y</em> + 8

Garden 1 + Garden 2 = Total veggie seeds

<em>y</em> + 3<em>y</em> + 8 = Total veggie seeds

Total veggie seeds = 4y + 8

4 0
3 years ago
Bob earns $66,500 a year. Find Bob’s semi-monthly gross pay
Sergio039 [100]

Answer: 5541.66

Step-by-step explanation:5

so i did 66,500 / 12 and that gave me 5541.66 than i rounded it to 5542 but that went over so it was 5541.66

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4 0
3 years ago
Solve the equation. –x + 8 + 3x = x – 6
saul85 [17]
First group the coefficients together on their side of the equal sign.
-x + 3x = 2x.

Then, since it is a positive number, subtract it from that side and the other side.

On the other side, the x becomes -x.

Add the 6 from the other side to the 8 to make 14.

14 = -x

Divide both sides by -1, to get the answer.

x = -14
8 0
4 years ago
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PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!1
posledela

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3 years ago
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sergey [27]
J. -8 is the correct answer
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3 years ago
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