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3 years ago

Pls help, answer question below. or just explain to me

Mathematics

1 answer:

svlad2 [7]3 years ago

3 0

To do this, you need to look on the graph and it's not hard from there.

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I need help please !!!!!

Alex777 [14]

15- 16 yd

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7 0

3 years ago

Expand and simplify<br>2(2y + 1) + 2(5y - 3)

GarryVolchara [31]

Answer:

14y-4

Step-by-step explanation:

Distribute 2 to both the left and right side.

Combine like terms.

14y-4

7 0

3 years ago

Evaluate $\frac{20}{101}-\frac{20}{99}$. Express your answer in simplest form.

m_a_m_a [10]

Detail: 37

Answer: 69

Gummi

Blick: 55

7 0

2 years ago

An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population of normal adults. Find the sa

Julli [10]

Answer:

Step-by-step explanation:

Given that IQ mean is 100 and std dev = 12 for normal adults

$Confidence level =90%\\Z critical value = 1.645\\Margin of error = 2\\Margin of error = 1.645* std error =2\\Std error = 1.216$

Std error = $\frac{12}{\sqrt{n} } =1.216$

$n=(\frac{12}{1.216} )^2 =97.38$

i.e. sample size should be atleast 97

The required sample size is 97.

This is reasonable as this is greater than 30

Yes. This number of IQ test scores is a fairly large number.

5 0

3 years ago

Evaluate the following expression:<br> -X- 6x + 10 when x = 5

BigorU [14]

Answer:

-25

Step-by-step explanation:

Evaluate -x - 6 x + 10 where x = 5:

-x - 6 x + 10 = -5 - 6×5 + 10

-6×5 = -30:

-5 + -30 + 10

-5 - 30 + 10 = 10 - (5 + 30):

10 - (5 + 30)

5 + 30 = 35:

10 - 35

10 - 35 = -(35 - 10):

-(35 - 10)

| 3 | 5

- | 1 | 0

| 2 | 5:

Answer: -25

8 0

3 years ago