All categories

3 years ago

I NEED HELP FAST!! can someone please answer these questions for me!

Mathematics

2 answers:

nasty-shy [4]3 years ago

7 0

Answer:

error in step 1

Step-by-step explanation:

$\frac{1}{2}$ (x + 18) = 4(2x - 6) - 9x

Multiply through by 2 to clear the fraction

x + 18 = 8(2x - 6) - 18x

[ Eleanor made the error in not multiplying - 9x by 2 ] ← ←

x + 18 = 16x - 48 - 18x

x + 18 = - 2x - 48 ( add 2x to both sides )

3x + 18 = - 48 ( subtract 18 from both sides )

3x = - 66 ( divide both sides by 3 )

x = - 22

elixir [45]3 years ago

5 0

Answer:

i dont know im sorry , give me 10 minites

Step-by-step explanation:

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3 years ago

What is the size of angle c?

lesantik [10]

Answer:

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Step-by-step explanation:

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3 years ago

Erin has 5 cans of juice and drinks 13 of a can daily. In how many days will she empty all the cans she has?

professor190 [17]

Answer:

15 days

Step-by-step explanation:

Don't you mean 1/3? If so,

5 cans

-------------------- = 15 days

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5 0

3 years ago

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uysha [10]

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3 years ago

A cone has a volume of 1,256 cubic centimeters. If the height of the cone is 12 centimeters, what is the radius of the base in c

luda_lava [24]

Answer:

The radius 10 cm

Step-by-step explanation:

∵ The volume of the cone = 1/3 πr²h

∵ v = 1256 cm³

∵ h = 12 cm

∴ 1256 = 1/3 π (12) r²

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3 years ago