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Nesterboy [21]
3 years ago
14

Li Juan solves the equation below by first squaring both sides of the equation.

Mathematics
2 answers:
emmasim [6.3K]3 years ago
8 0
-3w + 13
Happy New Year
ANTONII [103]3 years ago
4 0

Answer:

Step-by-step explanation:

(13-2w)^2 = 169 - 52w + 4w^2

(w+6)^2 = w^2 + 12w + 36

Setting them equal:

169 - 52w + 4w^2 = w^2 + 12w + 36

3w^2 - 64w + 133 = 0

Using the quadratic formula, we get

x = (64 +/- sqrt(64^2 - 4*3*133))/6

64^2-12*133 = 2500. sqrt(2500) = 50.

x = (64 +/- 50)/6.

x = 19 or 14/6 = 7/3.

Solving the original equation:

7 = 3w.

w = 7/3.

Therefore 19 is extraneous.

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Geometry- please explain when you answer. #16
Yakvenalex [24]
Sine (37) = 9.4 / ED (the hypotenuse)
ED = 9.4 / 0.60182
ED = <span> <span> <span> 15.6192881593 </span> </span> </span>

3 0
3 years ago
Solve 3/5k-5=7/100 by eliminating the fraction
likoan [24]

I assume you meant to type the following:

3/(5k-5) = 7/100

When we multiply both sides by (100)(5k - 5), we get this:

300 = 7(5k - 5)

300 = 35k - 35

300 - 35 = 35k

265 = 35k

265/35 = k

3 0
3 years ago
A glass of unsweetened lemonade weighs 255 grams. A spoonful of sugar is weighed before it is stirred into the lemonade. The sug
Lady bird [3.3K]

Answer:

Step-by-step explanation:

A glass of <u>unsweetened lemonade weighs 255 grams. </u>A spoonful of sugar is weighed before it is stirred into the lemonade. The sugar weighs 25 grams. How much do you think the <u>sweetened lemonade will weigh after you stir in the sugar?</u>

<u></u>

<u>225 + 25 =</u> 250 grams

5 0
3 years ago
PLEASE HELP ASAP! BRAINLIEST TO BEST/RIGHT ANSWER
Semenov [28]
= 9 * 10^5 * 3 * 10^10

= 27 * 10^5 * 10^10

= 27 * 10^15

= 2.7 * 10^16 - The best selection appears to be the first option.

Good luck :)
4 0
4 years ago
Rationalize the denominator:<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B%20%5Csqrt%7B3%7D%20%20-%20%20%20%5Csqrt%7
Vilka [71]

Answer:

________________________________

step\:1

\frac{1}{ \sqrt{3} -  \sqrt{2}  }

write the equation

________________________________

step\:2

\frac{1 \times ( \sqrt{3} +  \sqrt{2})  }{ (\sqrt{3} -  \sqrt{2} ) \times  (\sqrt{3}  +  \sqrt{2})  }

multiply both numerator and denominator by √3+√2

________________________________

step\:3

\frac{ \sqrt{3} +  \sqrt{2}  }{ ( 3 ) - ( 2 ) }

after multiplying numerator with √3+√2 we get→√3+√2

after multiplying denominator we get 3-2

________________________________

step\:4

\frac{ \sqrt{3}  +  \sqrt{2} }{1}

after subtracting 3 with 2 we get →1

________________________________

hence denominater is rationalized✓

hope it helped you:)

3 0
3 years ago
Read 2 more answers
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