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Len [333]
3 years ago
11

If anyone knows the anwser pls tell me

Mathematics
1 answer:
Fudgin [204]3 years ago
5 0

Answer:

z = 156

Step-by-step explanation:

y² = 65²-25² = 4225 - 625 = 3600

(x+25)²-65² = z²

x²+50x+625-4225 = z²

x²+50x-3600 = z²    ....(1)

x²+60² = z²

x²+3600 = z²   ....(2)

(1)-(2): 50x - 7200 = 0

50x = 7200

x = 144

check: x² + y² = z²       144² + 60² = 24336 = z²       z = 156

(25+144)²-65² = z² = 28561 - 4225 = 24336            z = 156

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Help asap thank you!!!!!
viktelen [127]

Answer:

A = 120

C = 45

Step-by-step explanation:

(12x + 12) + 15 + (3x + 18) = 180

(12x + 3x) + (12 + 15 + 18) = 180

15x + 45 = 180

15x = 180 - 45

15x = 135

x = 135/15

x = 9

A = 12x + 12 = 12(9) + 12 = 108 + 12 = 120

C = 3x + 18 = 3(9) + 18 = 27 + 18 = 45

6 0
3 years ago
Let f(x) = x2 − 16. Find f−1(x) how you solve this?
SashulF [63]
Let is the answer for the question
7 0
3 years ago
Which of the following is NOT true about the tails in a​ distribution?
Alla [95]

Answer:

The answer is D: The inequality symbol in the alternative hypothesis points away from the critical region.

Step-by-step explanation:

We usually have a one-tailed and two-tailed tests. Examples of a one-tailed test are the left-tailed and the right tailed test. These tests are referred to as one-tailed tests because the critical region or rejection region is located in only one tail. The critical region of a left or right tailed test is that region that correlate with the rejection region and is usually located in extreme left or right tail. Furthermore, tails in a distribution are usually the extreme critical regions also known as the rejection regions which are bound by critical values. However there is nothing that suggests the statement in Option D when talking about tails in a distribution.

6 0
4 years ago
Can someone help me with this. Will Mark brainliest.
kari74 [83]

Answer:

3

Step-by-step explanation:

7 0
3 years ago
Follow the process of completing the square to solve x2 - 10x + 8 = 0. How will the left side of the equation factor in step 5?
jasenka [17]

Answer:

x=5(+/-)\sqrt{17}

Step-by-step explanation:

we have

x^{2}-10x+8=0

Group terms that contain the same variable, and move the constant to the opposite side of the equation

x^{2}-10x=-8

Complete the square. Remember to balance the equation by adding the same constants to each side.

x^{2}-10x+5^{2}=-8+5^{2}

x^{2}-10x+25=-8+25

x^{2}-10x+25=17

Rewrite as perfect squares

(x-5)^{2}=17

Take square root both sides

(x-5)=(+/-)\sqrt{17}

Adds 5 both sides

x=5(+/-)\sqrt{17}

8 0
3 years ago
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