Ask question

Ask question

All categories

3 years ago

5

If n represents a number, then write an expression for the difference of three times the number after it was increased by 3 and

twice that number

1 answer:

faust18 [17]3 years ago

5 0

• Increased by 3
n+3
• Twice the number
2(n+3)
• Three times the number
3n
• Final result
2(n+3)-3n

You might be interested in

Help me its hard for me and brainleist because I only have 2 minutes

Delicious77 [7]

Answer:

y=x+14

Step-by-step explanation:

Let us check if this is the answer:

the first numbers in the table are 0 and 14

0 plus 14 equals 14.

Now the next two numbers on the table:

1 plus 14 equals 15

And one more: the third numbers on the table:

2 plus 14 equals 16

-----does this make sense? need more explination? then let me know

8 0

2 years ago

A group of engineers developed a new design for a steel cable. They need to estimate the amount of weight the cable can hold. Th

Tasya [4]

Answer:

At 90% confidence interval, the estimate of the mean breaking weight is (770.45, 778.15)

Step-by-step explanation:

Given that:

sample size n =43

sample mean x = 774.3

standard deviation = 15.4

confidence interval = 90%

At C.I of 90% , the level of significance ∝ = 1 - C.I

the level of significance ∝ = 1 - 0.90

the level of significance ∝ = 0.10

The critical value for z at this level of significance is $z_{\alpha/2} = z_{0.10/2}$

$z_{0.05}$ = 1.64

The margin of error can be computed as follows:

Margin of error = $\mathtt{z_{\alpha/2} \times \dfrac{\sigma}{\sqrt{n}}}$

Margin of error = $\mathtt{1.64 \times \dfrac{15.4}{\sqrt{43}}}$

Margin of error = $\mathtt{1.64 \times \dfrac{15.4}{6.5574}}$

Margin of error = $\mathtt{1.64 \times2.3485}$

Margin of error = 3.8515

The mean breaking weight for the 90% confidence interval is = $\mathtt{\overline x \pm E < \mu }$

= $\mathtt{\overline x - E < \mu < \overline x + E}$

= ( 774.3 - 3.8515 < μ < 774.3 + 3.8515 )

= (770.4485, 778.1515)

$\simeq$ (770.45, 778.15)

4 0

3 years ago

What’s the answer please??

damaskus [11]

Answer:

The answer is C

Step-by-step explanation:

Straight angles means a line which straight and has no turning.

5 0

3 years ago

Read 2 more answers

Help Q-Q 7/10c =4 1/5

shepuryov [24]

$\huge\mathfrak\green{answer}$

$= q - \frac{q7}{10} c = \frac{41}{5}$

$\red{multiply}$

$= q - \frac{cq7}{10} = \frac{41}{5}$

$\red{subtract \: q \: from \: both \: sides}$

$= q - \frac{cq7}{10} - q = \frac{41}{5} - q$

$\red{now \: simplify}$

$= - \frac{cq7}{10} = \frac{41}{5} - q$

$\red{multiply \: 10 \: both \: sides}$

$= 10( - \frac{cq7}{10} ) = 10. \frac{41}{5} - 10q$

$\red{simplify}$

$= - cq7 = 82 - 10q$

$\red{now \: divide}$

$= \frac{ - cq7}{ - q7} - \frac{82}{ - q7} - \frac{10q}{ - q7}$

$\red{simplify}$

$= c = - \frac{82 - 10q}{q7} (q≠0)$

Brainliest? :) (I'd really appreciate if you mark me as brainliest)

$\huge\mathfrak\green{thank \: you}$

5 0

3 years ago

Read 2 more answers

Jeanette wants to save money, but she has not been good at it in the past. The ratio of the amount of money in her savings accou

blsea [12.9K]

I think the answer is 1248 because if you divide 936 by 3 you get 312. since that is the number you mulitply to get 936 i multiplyed 312 by 4 to the the answer

3 0

3 years ago