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GalinKa [24]
2 years ago
15

If one-half of a number decreased by 20 is 40, what is the number?

Mathematics
2 answers:
Anvisha [2.4K]2 years ago
8 0

Answer:

120

Step-by-step explanation:

Just add the 20 back to 40 and times by 2

40 + 20 = 60

60 * 2 = 120

DedPeter [7]2 years ago
8 0

Answer:

The number is: 120

Step-by-step explanation:

We have one-half of "a" decreased by 20 is 40

This means that:

(1/2)a-20=40

(1/2)a=60

a=120

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A cube is cut in to three parts by vertical slices find the volume of the shaded area The length and width of original is 20 cm
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Answer:

4000 cm^3

Step-by-step explanation:

Note that no image was attached for reference purposes

Step one:

We are given that the original length and width of the cube is 20cm

if the cut part is 10cm

hence the dimension of the cut part is

lenght = 20cm

Width= 20cm

Hieght= 10cm

Step two:

the volume of the cut part will be

Volume= 20*20*10

Volume= 4000 cm^3

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Use the quadratic formula to solve x² + 9x + 10 = 0.<br><br> What are the solutions to the equation?
jok3333 [9.3K]

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Step-by-step explanation:

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Plug in values:

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Second value of x:

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