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2 years ago

7

I dont understand what to do

1 answer:

marta [7]2 years ago

7 0

Multiply negative five over three by negative thirty three and then add thirty five which will give you the answer.

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Rationalize the denominator 2√7+√3/3√7-√3

Dahasolnce [82]

Answer:

$\frac{2 \sqrt{7} + \sqrt{3}}{3 \sqrt{7} - \sqrt{3} } = \frac{2 \sqrt{7} + \sqrt{3}}{3 \sqrt{7} - \sqrt{3} } . \frac{3 \sqrt{7} + \sqrt{3} }{3 \sqrt{7} + \sqrt{3} } \\ \\ = \frac{(2 \sqrt{7} + 3)(3 \sqrt{7} + \sqrt{3}) }{(3 \sqrt{7} - 3)(3 \sqrt{7} + \sqrt{3} ) } \\ \\ = \frac{(42 + 2 \sqrt{21} + 9 \sqrt{21} + 3 \sqrt{21} )}{63 - 3} \\ \\ = \frac{42 + 2\sqrt{21} + 9 \sqrt{21} + 3 \sqrt{21} }{60}$

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2 years ago

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What’s the answer to b,d,e and h PLEASE HELP!!! I’ll give you Brainly

Tomtit [17]

Answer:

b= 5/10

d= 24/100

e= 23/100

Step-by-step explanation:

Put them in a decimal, the you can find if it's in the 10ths place or 100ths place

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2 years ago

Look at the figure. A 10 foot tall flagpole cast a shadow that is 24 feet long what is the approximate length of the shadow cast

masya89 [10]

Approx 60 feet see pic for work

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2 years ago

Which of the following expressions represents the phrase "19 less than a number"?

kipiarov [429]

A, because n is having 19 taken from it

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3 years ago

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Please help! I Mark brainlest and say thanks<br><br>surface area question

Oduvanchick [21]

Area of the figure shaded in yellow = 2 x 3 + 2 x 6 = 18 cm²

Total Surface Area = 18 + 18 + (4 + 3 + 2 + 3 + 2 + 6) x 3 = 96 cm²

Answer: 96 cm²

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2 years ago