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3 years ago

FIND THE PERCENTAGE OF THE PART!!!!!! 15% of 30 of what number???

Mathematics

2 answers:

lawyer [7]3 years ago

7 0

Answer:

4.5

Step-by-step explanation:

15% of 30 is 4.5

andrey2020 [161]3 years ago

5 0

30/100=0.3

0.3*15=4.5

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Put in order from least to greater3/8,3/4,5/6,1/2

Korvikt [17]

Expressing the numbers in decimal, we have:
3/8 = 0.375
3/4 = 0.75
5/6 = 0.833
1/2 = 0.5

From least to greatest, we have: 3/8, 1/2, 3/4, 5/6

8 0

3 years ago

In Exercise,solve for x.<br> x2 + 4x - 5 = 0

Anni [7]

Answer:

${x}^{2} + 5x - x - 5 = 0 \\ x(x + 5) - 1(x + 5) = 0 \\ (x + 5)(x - 1) = 0 \\ x = - 5 \: or \: x = 1$

6 0

3 years ago

What shape goes to the correct formula? What shape matches up to A= S to the 2nd Power?

Savatey [412]

Answer:

square

Step-by-step explanation:

if each side of the square is length s, then the area is s x s = s²

4 0

4 years ago

) Suppose that a subset of five balls will be randomly selected from an urn containing amber, blue, and green balls. (a) If the

vazorg [7]

Answer:

0.0023 = 0.23% probability that all 5 balls selected will be the same color

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the balls are selected is not important, which means that the combinations formula is used to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Desired outcomes:

Either 5 amber from a set of 6, or 5 blue from a set of 5. So

$D = C_{6,5} + C_{5,5} = \frac{6!}{5!1!} + \frac{5!}{5!0!} = 6 + 1 = 7$

Total outcomes:

5 balls selected from a set of 6 + 5 + 4 = 15. So

$T = C_{15,5} = \frac{15!}{5!10!} = 3003$

Probability:

$p = \frac{D}{T} = \frac{7}{3003} = 0.0023$

0.0023 = 0.23% probability that all 5 balls selected will be the same color

5 0

3 years ago

The ratio of the same side interior angles of two parallel lines is 1:14. Find the measures of all eight angles formed by the pa

Andrew [12]

Answer:

At the intersection of the first parallel line with the transversal, a = 12°, c = 168°, d = 12°, e = 168°. Counting counterclockwise from a.

At the first intersection of the second parallel line with the transversal, b = 168°, f = 12°, g = 168°, h = 12°. Counting clockwise from b.

Step-by-step explanation:

At the intersection of the first parallel line with the transversal, a = 12°, c = 168°, d = 12°, e = 168°. Counting counterclockwise from a.

At the first intersection of the second parallel line with the transversal, b = 168°, f = 12°, g = 168°, h = 12°. Counting clockwise from b.

Step-by-step explanation:

Let a be the first interior angle. Since they are in 1:14, the second same side interior angle is b = 14a.

We know that the sum of interior angles equals 180°.

So, a + b = 180°

a + 14a = 180°

15a = 180°

a = 180/15

a = 12°

At alternate angle to the other interior angle, b adjacent to a is c = b = 14a = 14 × 12 = 168°

The angle vertically opposite to a is d = a = 12°

The angle vertically opposite to a is b = e = 168°

At the intersection of the second parallel line and the transversal, the angle alternate to a is f = a = 12°

the angle vertically opposite to angle b is g = b = 168°

the angle vertically opposite to f is h = 12°

6 0

3 years ago