All categories

3 years ago

How do I write 4 times difference of a number and 8

Mathematics

2 answers:

Yakvenalex [24]3 years ago

7 0

Answer:

4(n-8)

Step-by-step explanation:

goldfiish [28.3K]3 years ago

7 0

4(n-8)

I think it'd be written like this

You might be interested in

Bert received a total of $5.29 from his friends when he asked them to bring

alexgriva [62]

Answer:

Step-by-step explanation:

The value 529 is 23·23, so Bert must have had 23 friends bring him 23¢ each.

The way 23¢ can be made with 6 coins is ...

3 pennies
2 nickels
1 dime

So, Bert collecte 23 × (2 nickels) = 46 nickels.

7 0

4 years ago

What is the chemical formula of water.

igor_vitrenko [27]

Answer:

Guess its H2

Step-by-step explanation:

prove me wrong

6 0

3 years ago

Read 2 more answers

Why is estimation useful when finding actual products in solving real world problems

max2010maxim [7]

I think it's because if you can't caculate it or you want a rough answer you can estimate. For example you are estimating the height of a tall building. You would just want to estimate it first.

4 0

4 years ago

Read 2 more answers

You are trying to determine if you should accept a shipment of eggs for a local grocery store. About 4% of all cartons which are

padilas [110]

Answer:

0.8809

Step-by-step explanation:

Given that:

The population proportion p = 4% = 4/100 = 0.04

Sample mean x = 16

The sample size n = 300

The sample proportion $\hat p =\dfrac{x}{n}$

= 16/300

= 0.0533

∴

$P(\hat p \leq 0.0533) = P\bigg ( \dfrac{\hat p - p}{\sqrt{\dfrac{P(1-P)}{n}}}\leq\dfrac{0.0533 - 0.04}{\sqrt{\dfrac{0.04(1-0.04)}{300}}}\bigg )$

$P(\hat p \leq 0.0533) = P\bigg ( Z\leq\dfrac{0.0133}{\sqrt{\dfrac{0.04(0.96)}{300}}}\bigg )$

$P(\hat p \leq 0.0533) = P\bigg ( Z\leq\dfrac{0.0133}{\sqrt{\dfrac{0.0384}{300}}}\bigg )$

$P(\hat p \leq 0.0533) = P\bigg ( Z\leq\dfrac{0.0133}{\sqrt{1.28 \times 10^{-4}}}\bigg )$

$P(\hat p \leq 0.0533) = P\bigg ( Z\leq\dfrac{0.0133}{0.0113}}\bigg )$

$P(\hat p \leq 0.0533) = P\bigg ( Z\leq1.18}\bigg )$

From the z tables;

= 0.8809

Let X be the random variation that follows a normal distribution;

Then;

population mean $\mu$ = n × p

population mean $\mu$ = 300 × 0.04

population mean $\mu$ = 12

The standard deviation $\sigma = \sqrt{np(1-p)}$

The standard deviation $\sigma = \sqrt{300 \times 0.04(1-0.04)}$

The standard deviation $\sigma = \sqrt{11.52}$

The standard deviation $\sigma = 3.39$

The z -score can be computed as:

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

$z = \dfrac{16 -12}{3.39}$

$z = \dfrac{4}{3.39}$

z = 1.18

The required probability is:

P(X ≤ 10) = Pr (z ≤ 1.18)

= 0.8809

5 0

3 years ago

X + 3y = 12<br> x = -6y<br> it is system of equations

aliya0001 [1]

Step-by-step explanation:

x+3y=12--(1)

x=-6y--(2)

put (2) in (1)

-6y+3y=12

-3y=12

divide both sides by -3

y=(12/-3)

y=-4

put y=-4 in (1)

x+3(-4)=12

x-12=12

x=12+12

x=24

8 0

3 years ago