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2 years ago

20% of what original number is 25?

Mathematics

1 answer:

marshall27 [118]2 years ago

3 0

Answer:

Y is 25, P% is 20, so the equation is 25/20% = X Convert the percentage to a decimal by dividing by 100. Converting 20% to a decimal: 20/100 = 0.20

Step-by-step explanation:

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Which number is IRRATIONAL? A) 47 B) 0.09 C) 15 D) 8 45

Elanso [62]

Your answer would be B. 0.09, the reason being is that any number that has a 0 and then a decimal point is irrational (or a regular fraction

6 0

3 years ago

Find the vertex, the equation and axis of symmetry, and the y-intercept of the graph of y=2x^2-8x+6

o-na [289]

Answer:

y=2x^2-8x+6

Step-by-step explanation:

8 0

3 years ago

What is 2.4×10 to the seventh power

kotykmax [81]

This is easy once you look at it you just have to move the decimal 7 places and you'll get 24,000,000

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3 years ago

Total surface area of a cube is 1014cm^2. It's volume will be :

Karolina [17]

Answer:

Option A (2197 cm³)

Step-by-step explanation:

For a cube with length of each side "a" , it's

Total Surface Area = 6a²
Volume = a³

_____________________________________________

According to the question ,

Total Surface Area = 1014 cm²

Let the length of each side of cube be 'a'.

Using the formula ,

$6a^{2} =1014$

$=> a^{2} =\frac{1014}{6} = 169$

$=> a = \sqrt{169} = +13 \: or -13$

But length can't be negative . So , length of each side = 13 cm

∴ Volume of cube = 13³ = 2197 cm³

8 0

3 years ago

Which of the following facts, if true, would allow you to prove that lines l and m are parallel? NEED HELP

Damm [24]

Two parallel lines A and B are crossed by another line as shown in the attached figure. Angle 2 and 3 are equal, because they are opposite angles, while angle 3 and 7 are also equal, because they are corresponding angles, thus it is deduced that

angle 2 = angle 3

angle 3 = angle 7

So angle 2 = angle 7

Hence fourth option is right.

8 0

3 years ago