What is -4-(-12)? I don't know if you add them or subtract.

1 answer:

7 0

You subtract negative 4 and negative 12...think in a number line and you find negative 4 and then you decrease( which means you move to your left of the number line) and find negative 12 and then you count the spaces you took to get to negative 12

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I need to know the volume

lana66690 [7]

Answer:

105 mm^3

Step-by-step explanation:

The volume formula for a triangular prism is (height x base x length) / 2.

(5 x 6 x 7) / 2 = 105 mm cubed = 105 mm^3

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Racionalize o denominador da equação abaixo: 5 + 3 ²√5 / ²√5

GrogVix [38]

I hope this helps

$\cfrac{5+3 \sqrt{5} }{ \sqrt{5} } =\cfrac{(5+3 \sqrt{5}) \sqrt{5} }{ \sqrt{5}* \sqrt{5} }= \cfrac{5 \sqrt{5}+15 }{5} = \cfrac{5 (\sqrt{5}+3) }{5} = \sqrt{5}+3$

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mariarad [96]

Answer:

Step-by-step explanation:

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2 years ago

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Please help it’s very urgent and I need the right answer

8090 [49]

Answer:

3x + 15 = 3*10 + 15 = 30 + 15 = 45

3x + 15 = 45

Now,

2x + 25 = 2*10 + 25 = 20 + 25 = 45

2x + 25 = 45

Step-by-step explanation:

3x + 15 + 2x + 25 = 90

or, 5x + 40 = 90

or, 5x = 90 - 40

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2 years ago

In March, a family starts saving for a vacation they are planning for the end of August. The family expects the vacation to cos

Makovka662 [10]

Deposited money:

March: 120
April: 120+(120×20)/100=120+24=144
May: 144+(144×20)/100=144+18,8=162,8
June: 162,8+(162.8×20)/100=162,8+32.56=195.36
July: 195.36+(195.36×20)/100=195.36+23.87=219.23
August: 219.23+(219.23×20)/100=219.23+43.85=263.08

120+144+162.8+195.36+219.23+263.08=1105.19
So the answer is no.

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2 years ago