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lora16 [44]
3 years ago
11

What is the solution? -10 = 2a – 4

Mathematics
2 answers:
DENIUS [597]3 years ago
6 0

Answer:

a =  - 3

Step-by-step explanation:

- 10 = 2a  -  4 \\ 2a - 4 =  - 10 \\ 2a = 4 - 10 \\ 2a =  - 6 \\ a =  -  \frac{6}{2}  \\ a =  - 3

JulijaS [17]3 years ago
6 0

Answer:

a = -3

Step-by-step explanation:

- 10 = 2a - 4

- 10 + 4 = 2a

- 6 = 2a

- 6/2 = a

- 3 = a

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A survey shows that 10% of the population is victimized by property crime each year. A random sample of 527 older citizens (65 y
jekas [21]

Answer:

The data provide sufficient evidence that older people are more likely to be victimized.

Step-by-step explanation:

H 0 : P = 0.10

H 1 : P > 0.10 (Right tailed test)

n = 527, P = 0.1235

The test statistics

x = P - p / \sqrt{p*(1-p) / n}

x = 0.1235 - 0.10 / \sqrt{0.10 * 0.90 / 527}

x = 0.0235 / \sqrt{0.09 / 527}

x = 0.0235 / \sqrt{0.00017077798}

x = 0.0235 / 0.0130682049264618

x = 1.798257689731729

x = 1.798

P value = [1 - p(Z > 1.7980] (Right tailed test)

P value = 0.036089

The P - Value is very small, so <u>reject H0</u>

Conclusion: The data provide sufficient evidence that older people are more likely to be victimized.

7 0
3 years ago
Write a compound inequality to represent all of the numbers between -4 and 6.
OlgaM077 [116]
-4<x<6
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you could also write it
-4<x AND x<6
6 0
3 years ago
Michael's bank account opened with $100. 5 weeks after opening, his account balance was $250.
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3 years ago
Marcos is flying a kite 35 feet above an oak tree. The angle of elevation to the top of the tree is 16 degrees and the angle of
Elza [17]

9514 1404 393

Answer:

  195 ft

Step-by-step explanation:

The relationship between the horizontal distance, angle, and vertical height is given by ...

  Tan = Opposite/Adjacent

Referring to the attached diagram, we have ...

  tan(16°) = BT/MB

  tan(25°) = BK/MB

Solving for BT and BK, we can describe their difference as ...

  BT = MB·tan(16°)

  BK = MB·tan(25°)

  BK -BT = 35 = MB(tan(25°) -tan(16°))

Dividing by the coefficient of MB gives ...

  MB = 35/(tan(25°) -tan(16°)) = 35/0.179562

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Marcos is standing 195 feet from the base of the tree.

3 0
3 years ago
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crimeas [40]

Answer:

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Step-by-step explanation:

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