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3 years ago

I will give brainliest for the correct answer! Please help it’s due today!

Mathematics

1 answer:

nikklg [1K]3 years ago

7 0

One iron atom so yeah

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2. Ebony’s bank balance first reached $400 on Day 4. The last day her balance was $400 was Day 8.

Aleks [24]

She’s wrong because balance changes are different From each other and not the same.

8 0

3 years ago

Read 2 more answers

Unoccupied seats on flights cause airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoc

Len [333]

Answer: 3

Step-by-step explanation:

Given : Standard deviation : $\sigma=4.1\text{ seats}$

Margin of error : $E=\pm5\text{ seats}$

Significance level : $\alpha: 1-0.95=0.05$

By using the standard normal table of z ,

Critical value : $z_{\alpha/2}=1.96$

The formula we use to find the minimum sample size required :-

$n=(\dfrac{z_{\alpha/2}\ \sigma}{E})^2$

i.e. $n=(\dfrac{(1.96)(4.1)}{5})^2=2.58309184\approx3$

Hence, the number of lights should we select if we wish to estimate μ to within 5 seats and be 95 percent confident =3

6 0

3 years ago

4x+1=2x+7 please help me and show steps to how you got your answer

AURORKA [14]

4x+1 = 2x+7
4x-2x = 7-1
2x = 6
x= 6/2
x= 3

5 0

4 years ago

MULTIPLE CHOICE QUESTION

just olya [345]

Answer:

(-4, 5)

Step-by-step explanation:

x will never change if reflected over it. but y will be negative. also what do you mean by y coordinate or x coordinate?

8 0

3 years ago

What is tue domain and range

jarptica [38.1K]

Answer:

Step-by-step explanation:

True, this is not a function, and the reason for that is that two of the ordered pairs have the same x-coordinate (1).

The domain is the set of all input values shown; they are {-2, -1, 1}.

The domain is the set of all possible output values; they are {-2, 0, 2, 3}

3 0

3 years ago