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2 years ago

What is the value of z?

Mathematics

2 answers:

Amiraneli [1.4K]2 years ago

8 0

Answer:

if a z-score is equal to +1, it is 1 standard deviation above the mean.

Step-by-step explanation:

zepelin [54]2 years ago

7 0

The value of Z would be 30 degrees because it is equal to the other side which is also 30 degree a

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Write 25 2 as a mixed number. Give your answer in its simplest form.

masha68 [24]

Answer:

12 and 1/2

Step-by-step explanation:

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2 years ago

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Simplify the given expression below: (7-3i)•(2-i)

Dimas [21]

when multiplying two binomials together we use the F.O.I.L. method:

First

Outer

Inner

Last

(7-3i)(2-i)

First: 7 * 2 ..... Outter: 7 * -i .... Inner: -3i * 2 ...... Last: -3i * -i

First: 14 ...... Outter= -7i ..... Inner: -6i .... Last: 3i^2

putting this together we get 14-7i-6i+2i^2

We combine like terms and end up with 2i^2-13i+14

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2 years ago

Solve for x.

konstantin123 [22]

Answer:

The value of x = 9

Step-by-step explanation:

Angle Bisector Theorem

An angle bisector of a triangle would cut the opposite side into two segments that are proportional to the other two sides of the triangle.

Thus,

$\frac{x}{15}=\:\frac{12}{20}$

Cross Multiply the expression

$\:20\times x=12\times 15$

Divide both sides by 20

$\frac{20x }{20}=\frac{180}{20}$

$x=9$

Therefore, the value of x = 9

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2 years ago

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Dimitri drew a right angle. Then he drew an angle that was 20° larger. What is the measure of the second angle Dimitri drew?

marysya [2.9K]

Right angle is 90 degrees. 90 + 20 = 110 degrees

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