3 years ago

-5/7 divided by -1/3

Mathematics

1 answer:

Ierofanga [76]3 years ago

6 0

Answer:

Are you in geometry 1 or 2

Step-by-step explanation:

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Evaluate the following expression

Nana76 [90]

Your question answer is 16

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3 years ago

Is 0.2782 a rational number

Anvisha [2.4K]

Yes. 0.2782 is a rational number.
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Hint:
If you wrote the number down using digits,
then you wrote a rational number.
Every number that can be completely written
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3 years ago

When 31 times a number is increased by 40 the answer is the same as two 200 is decreased by the number

storchak [24]

$x-\ number\\\\
31x+40=200-x\ \ \ | add\ x\\\\
32x+40=200\ \ \ | subtract\ 40\\\\
32x=160\ \ \ \ | divide\ by\ 32\\\\x=5\\\\Number\ is\ 5.$

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4 years ago

What’s the answer to this?

inna [77]

Since the triangle is equilateral, all its angles are equal to 60°

AO is the bisector⇒∠OAD = 30°

AO is the hypotenuse, ∠OAD = 30°⇒

OD=5*2=10m

By the Pythagorean theorem

$10^2=AD^2+5^2\\AD=\sqrt{100-25} \\AD=\sqrt{75}$

$AC=AD+DC=2\sqrt{75}=10\sqrt{3}$

$S=\frac{a^2\sqrt{3} }{4}$

$S=\frac{(10\sqrt{3})^2\sqrt{3} }{4} =\frac{300\sqrt{3} }{4} =75\sqrt{3} m^2$

Answer: A) $S=75\sqrt{3}$ m²

P.S. Hello from Russia and sorry for my bad english :^)

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A group of friends ordered two pizzas, one with pepperoni and one with mushrooms and green peppers. A plain pizza costs 9 dollar

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Answer:

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