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2 years ago

Can someone really help me with this and more questions like this

Mathematics

2 answers:

AlekseyPX2 years ago

6 0

Answer: I think its D

Step-by-step explanation:

Ainat [17]2 years ago

6 0

Answer:

Maximum value = 7, minimum value = 8

Step-by-step explanation:

Your answer is right !

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When factored completely, the expression 3x? – 9x + 6 equivalent to is

vodka [1.7K]

Answer:

Step-by-step explanation:

The given quadratic expression is

3x² - 9x + 6

Dividing each term in the expression by 3 in order to simplify it further, it becomes

x² - 3x + 2 = 0

We would determine two numbers such that their sum or difference is -3x and their product is 2x².

The two numbers are - 2x and - x.

Therefore,

x² - 2x - x + 2

x(x - 2) - 1(x - 2)

(x - 1)(x - 2)

When the expression is factored completely, it is equivalent to

(x - 1)(x - 2)

6 0

3 years ago

The heights of women aged 20 to 29 are approximately Normal with mean 64 inches and standard deviation 2.7 inches. Men the same

masha68 [24]

Answer: The z-scores for a woman 6 feet tall is 2.96 and the z-scores for a a man 5'10" tall is 0.25.

Step-by-step explanation:

Let x and y area the random variable that represents the heights of women and men.

Given : The heights of women aged 20 to 29 are approximately Normal with mean 64 inches and standard deviation 2.7 inches.

i.e. $\mu_1 = 64$ $\sigma_1=2.7$

Since , $z=\dfrac{x-\mu}{\sigma}$

Then, z-score corresponds to a woman 6 feet tall (i.e. x=72 inches).

[∵ 1 foot = 12 inches , 6 feet = 6(12)=72 inches]

$z=\dfrac{72-64}{2.7}=2.96296296\approx2.96$

Men the same age have mean height 69.3 inches with standard deviation 2.8 inches.

i.e. $\mu_2 = 69.3$ $\sigma_2=2.8$

Then, z-score corresponds to a man 5'10" tall (i.e. y =70 inches).

[∵ 1 foot = 12 inches , 5 feet 10 inches= 5(12)+10=70 inches]

$z=\dfrac{70-69.3}{2.8}=0.25$

∴ The z-scores for a woman 6 feet tall is 2.96 and the z-scores for a a man 5'10" tall is 0.25.

6 0

3 years ago

Q15) 1.0 marks Choose the missing term in the below series. 26, 37, 50, 65, 82, ?

Illusion [34]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

in a town election, 5985 people voted. this is 63% of the town's population who are registered to vote. How many people are regi

dangina [55]

Answer:

9500

Step-by-step explanation:

If r represents the number of registered voters, we are given that ...

5985 = 0.63·r

r = 5985/0.63 = 9500

9500 people are registered to vote.

5 0

3 years ago

If the sin 30 = 1/2, then which statement is true?

egoroff_w [7]

Answer:

cos 60° = 1/2 because the angles are complements.

Step-by-step explanation:

3 0

3 years ago