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2 years ago

Help me answer this question!!!!!

Mathematics

2 answers:

zepelin [54]2 years ago

5 0

Answer:

Step-by-step explanation:

Sav [38]2 years ago

4 0

The answer is 0 hope it helps

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A recipe for pizza crust call for 3 cups of flour for every 1 cup of water.How many cups of water are needed for 21 cups of flou

Zina [86]

The answer is 7 cups of water are needed for 21 cups of flour.

Shown work:
1 cup of water=3 cups of flours
? Cup of water=21 cups of flours

21 divided 3=7
1 multiply by 7= 7 cups of water needed

4 0

2 years ago

Write the percent as a decimal.<br> 1. 66.7%

Sever21 [200]

Answer:

66.7% = 0.667 in decimal form.

Hope that helps!

7 0

2 years ago

Read 2 more answers

A mole of 1 gallon cans of paint could cover every square inch of the surface of how many planets the size of the earth?

Nady [450]

Answer:

The answer is $4.4*10^1^0 planets$

Step-by-step explanation:

We ll have to find more information first to solve this question.

1. One mole = 6.022 x 10^23

Assuming one gallon of paint covers the 400 sq ft of area.

Thus total area which can be covered by 1 mole of gallon is

$=6.022*10^2^3 * 400\\=2.40*10^2^6$

2. Now we will find the surface area of earth

$Area = 4\pi R^2$

The radius of earth is 2.1 x 10^7 Feet

substituting values

$Area = 4*3.14*(2.1*10^7)^2\\Area = 5.5*10^1^5ft^2$

3. Now we will find out the number of planets of earth size which can be covered by mole of gallon of paint

= Total area one mole of gallon can cover / area of earth

$= 2.40 * 10^2^6/5.5*10^1^5\\=4.4*10^1^0 planets$

6 0

3 years ago

Which expression is equivalent to 7a^2b + 10a^2b^2 + 14a^2b^3?

balu736 [363]

Answer:

a^2b(7 + 10b + 14b^2)

Use wolframalpha for math questions, or photomath!

To solve this, factor out a^2b from the expression.

4 0

2 years ago

Read 2 more answers

please help me thanks if you do :') it would also be awesome if you could explain but its ok if you can't i guess. Find x

klio [65]

Answer:

$x=4\sqrt{2}\ units$

Step-by-step explanation:

Theorem: In the right triangle the leg is the geometric mean of the hypotenuse and the segment of the hypotenuse adjacent to the leg.

Based on the theorem above,

$x^2=2\cdot (2+6)\\ \\x^2=4\cdot 8\\ \\x^2=32\\ \\x=\sqrt{32}\ units\\ \\x=4\sqrt{2}\ units$

8 0

2 years ago