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4 years ago

How do I find the value of Z?

Mathematics

2 answers:

IRINA_888 [86]4 years ago

5 0

Answer:

Step-by-step explanation:

Yuki888 [10]4 years ago

3 0

Answer:

4/5

Step-by-step explanation:

Cos X = (adjacent side)/(hypotenuse)

The hypotenuse is always the longest side

The adjacent side is the side that makes up the angle that is not the hypotenuse.

For this triangle, the hypotenuse is 15

In relation to Z, the adjacent side is YZ, or 12

So Cos Z = 12/15, which reduces to 4/5

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4 years ago

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Lana71 [14]

(A)

Step-by-step explanation:

Multiply both sides by (x + 3)(x - 3)

4(x + 3) + 2 = (x- 3)

4x + 12 + 2 = x - 3

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3 years ago

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Alexeev081 [22]

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Step-by-step explanation:

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4 years ago

Solve using square root method

avanturin [10]

$\frac{1}{2}(x+5)^2 + 9 = -15$

$\frac{(x+5)^2+18}{2} = \frac{-30}{2}$

Cancel out the denominators.

(x+5)² + 18 = -30

(x+5)² = -30 - 18

(x+5)² = -48

The equation is impossible, we have a negative number.

There isn't a number that squared gives a negative number (the square is always positive).

√(x+5)² = +/- √-48

x+5 = +/- √-48

IMPOSSIBLE

You can write the result in imaginary numbers

x+5=+/- 4i√3

6 0

3 years ago

PLZ HELP!!!

slava [35]

Answer: Senior: $8, Child: 14

Step-by-step explanation:

3s + c = 38

3s + 2c = 52

c = 14

3s + 14 = 38

3s = 24

s = 8

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3 years ago

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