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WARRIOR [948]
3 years ago
14

What is A∪ϕ and A∩ϕ for a set A?​

Mathematics
1 answer:
vodomira [7]3 years ago
4 0

Answer:

1 ans A second phi okay yed

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Which score has a higher relative position, a score of 92 on a test with a mean of 71 and a standard deviation of 15, or a score
slava [35]

solution:

a score of 92 has z score of

z=\frac{x-μ}{σ}=\frac{92-71}{5}=1.40

a score of 688 has z score of

z=\frac{x-μ}{σ}=\frac{688-493}{150}=1.30

a score of 92 is better because its z score is higher

5 0
2 years ago
Read 2 more answers
Question 10 of 11 Find the measure of the exterior 1 60 252 O A. 95 OB. 85 OC. 35 O D. 120<br>​
kramer

Answer:

would help if u had a picture im assuming those numbers are a with shape

3 0
2 years ago
Hello:) anyone able to explain how to solve the equestrian for part (d) ? Thank youu
Anna007 [38]

Answer:

see explanation

Step-by-step explanation:

Given

4a^{4} - 5a² + 1 = 0

Use the substitution u = a², then equation is

4u²  - 5u + 1 = 0

Consider the product of the coefficient of the u² term and the constant term

product = 4 × 1 = 4 and sum = - 5

The factors are - 4 and - 1

Use these factors to split the u- term

4u² - 4u - u + 1 = 0 ( factor the first/second and third/fourth terms )

4u(u - 1) - 1(u - 1) = 0 ← factor out (u - 1) from each term

(u - 1)(4u - 1) = 0

Equate each factor to zero and solve for u

u - 1 = 0 ⇒ u = 1

4u - 1 = 0 ⇒ 4u = 1 ⇒ u = \frac{1}{4}

Convert u back into terms of a, that is

a² = 1 ⇒ a = ± 1

a² = \frac{1}{4} ⇒ a = ± \frac{1}{2}

Solutions are a = ± 1 , a = ± \frac{1}{2}

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%
White raven [17]

Answer:

[Tex] \:/:/://///////////////////////////////////////::::::::::::::::::::::::::::::::7474838383+$83+

Answer = fracfracfracfrac tex tex????????????

8 0
3 years ago
EASY QUESTION PLEASE HELP
IgorC [24]

Answer:

9x,2,8y

Step-by-step explanation:

4 0
3 years ago
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