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GenaCL600 [577]

3 years ago

9

Two planes are 20000 miles apart. if one plane is traveling at 1000 miles per hour and the other is traveling at 4000 miles per

hour. when will their paths cross

1 answer:

Stells [14]3 years ago

5 0

4 hours $(%(&($+$-*':('-"-"!:('+'):+"+'+:?'+"+'('+

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What is the circumference of a circle whose radius is 20 feet? Leave answer in terms of π.

lesantik [10]

Answer:

What is the circumference of a circle whose radius is 20 feet? Leave answer in terms of π.

A) 10π feet

B) 20π feet

<u> C) 40π feet </u>

D) 100π feet

Step-by-step explanation:

circumference = 2πr

circumference=2×π×20

circumference=40π

5 0

2 years ago

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Use distance formula d=√(X2 – X1 )2 + (X2 – X1 )2, calculate the distance r from the origin to the point r (-2, √5).

lesya692 [45]

$d = \sqrt{(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2}} \\d = \sqrt{(\sqrt{5} - (-2))^{2} + (\sqrt{5} - (-2))^{2}} \\d = \sqrt{(\sqrt{5} + 2)^{2} + (\sqrt{5} + 2)^{2}} \\d = \sqrt{(4 + 4\sqrt{5} + 5) + (4v + 4\sqrt{5} + 5)} \\d = \sqrt{0 + 0} \\d = \sqrt{0} \\d = 0$

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3 years ago

Reed uses 88 pieces of glass per square foot to make a stained glass window. how many pieces of glass will he need to make a win

d1i1m1o1n [39]

He will need 528 pieces of glass.

Hope this helps!

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2 years ago

David is pouring an entire gallon of milk into 12 glasses. What part of a gallon will be in each glass

expeople1 [14]

This question calls for a fraction. In a fraction, the numerator (top number) is the number of parts, while the denominator (bottom number) is the total number of parts. One part is one glass of milk, and there are 12 parts total. So, we get the answer 1/12.

Answer: 1/12

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2 years ago

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Multiply.<br> (d+7)(d-7)<br> Simplify your answer.

romanna [79]

Answer:

$\huge\boxed{(d+7)(d-7)=d^2-49}$

Step-by-step explanation:

$\bold{METHOD\ 1:}\\\\(d+7)(d-7)\qquad|\text{use}\ (a+b)(a-b)=a^2-b^2\\\\=d^2-7^2=d^2-49\\\\\bold{METHOD\ 2:}\\\\(d+7)(d-7)\qquad|\text{use FOIL}\ (a+b)(c+d)=ac+ad+bc+bd\\\\=(d)(d)+(d)(-7)+(7)(d)+(7)(-7)\\\\=d^2-7d+7d-49\qquad|\text{combine like terms}\\\\=d^2+(-7d+7d)-49\\\\=d^2-49$

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2 years ago