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2 years ago

Algebric expressions formula

Mathematics

1 answer:

Arada [10]2 years ago

6 0

Answer:

a2 – b2 = (a – b)(a + b)

(a + b)2 = a2 + 2ab + b

a2 + b2 = (a + b)2 – 2ab

(a – b)2 = a2 – 2ab + b

That's all i know- rip TvT

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"Eighty and fifteen hundredths" in numbers<br>(decimals)

Black_prince [1.1K]

Answer:

80.15

Step-by-step explanation:

Eighty and fifteen hundredths = 80.15

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3 years ago

Can sum1 answer asap and pls give explanation :)

Tju [1.3M]

Answer:

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Step-by-step explanation:

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3 years ago

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You push your younger sister on a swing one time and then allow your sister to

Ber [7]

Answer:

My sister will swing the total distance = 40 feet

Step-by-step explanation:

On the first swing my sister travels a distance of 8 feet.

In every successive swing she travels 80% of the distance of the previous distance.

So the sequence formed by the distance traveled in every swing will be a geometric sequence.

First term of the sequence 'a' = 8 feet

common ratio 'r' = 0.80

Since this sequence is an infinite geometric sequence,

Sum of this sequence = $\frac{a}{(1-r)}$ [Since r < 1]

= $\frac{8}{1-0.8}$

= $\frac{8}{0.2}$

= 40 feet

Therefore, my sister will cover the total distance = 40 feet

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2 years ago

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Luden [163]

Answer:

3,520 yds in 2 hours

Step-by-step explanation:

5,280:1 ; 1 mile an hour is 5,280 feet in an hour

10,560:2 ; 2 miles in 2 hours is 5,280+5,280 (10,560) feet in 2 hours

3 ft = 1 yd ; every 3 feet is a yard, so divide 10,560 by 3

10,560/3 = 3520 yds ; Jorge can walk 3,520 yds in 2 hours

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3 years ago

Which equation results from taking the square root of both sides of (x + 9)^2= 25?

MrRa [10]

Answer:

$x=-4,-15$

Step-by-step explanation:

$(x+9)^{2}=25 \\(x+9)=\pm5\\x=-9\pm5\\x=-4, -15$

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3 years ago

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Algebric expressions formula​

Algebric expressions formula