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4 years ago

What is the answer to this 2√3-5√÷√3+2√5

Mathematics

2 answers:

Natasha_Volkova [10]4 years ago

7 0

Answer:

(16 - 5√15) ÷ (-17)

Step-by-step explanation:

(2√3-√5÷√3+2√5

By surd rationalization

(2√3-√5÷√3+2√5) * (√3-2√5÷√3-2√5)

(2×3 - 4√15 - √15 + 2×5) ÷ (3 - 2√15 + 2√15 - 4×5)

(6 - 5√15 + 10) ÷ (3 - 20)

(16 - 5√15) ÷ (-17)

Burka [1]4 years ago

4 0

Answer:

$\sqrt{ \div 3}$

mathematicallly error sentence!

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lana66690 [7]

Answer:

First term is 15

Step-by-step explanation:

Given data:

$a_{7} =3\\d=-2$

Now,

$a+6d=3.....(1)\\a_{n} =a+(n-1)d\\\\\\From equation (1)\\a+6(-2)=3\\a-12=3\\a=12+3\\a=15$

Therefore first term a =15

Correct option is (c)

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3 years ago

I have to find x when y=40

Aloiza [94]

Answer:

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Step-by-step explanation:

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3 years ago

A square with an area of 4 in² is dilated by a factor of 7. What is the area of the dilated square?

Flura [38]

Dilated by a factor of 7 is 196 in²

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3 years ago

Read 2 more answers

I still get stuck on slope like i can graph it but cant do tjis

Sophie [7]

when the slope is perpendicular, it is the negative reciprocal

-3/5 becomes 5/3

y = mx + b

the slope is 5/3 the y intercept is -14

y = 5/3 x -14

3 0

3 years ago

2x-30+5x+2=2 plz help

Rina8888 [55]

Answer:

30/7

Step-by-step explanation:

So we have the equation:

$2x-30+5x+2=2$

Combine like terms:

$(2x+5x)+(-30+2)=2$

Add:

$7x-28=2$

Add 28 to both sides:

$7x=30$

Divide both sides by 7:

$x=30/7$

So, our answer is 30/7

Or approximately 4.2857 :)

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4 years ago

What is the answer to this 2√3-5√÷√3+2√5​

What is the answer to this 2√3-5√÷√3+2√5