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2 years ago

The difference of twice a number and 2 is 40. Find the number.

Mathematics

1 answer:

IgorLugansk [536]2 years ago

4 0

Answer:

answer = 21

Step-by-step explanation:

2n - 2 = 40

2n - 2 + 2 = 40 + 2

2n = 42

2n/2 = 42/2

n = 21

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I need x and GH there is two answer to this!! Please help

g100num [7]

Answer:

15

Step-by-step explanation:

9x - 3 = $\frac{(5x + 1) +19}{2}$

2(9x - 3) = 5x + 1 + 19

18x - 6 = 5x + 20

13x = 26

x = 2

GH = 9(2) - 3 = 15

8 0

2 years ago

In December yanni’s chocolate shop received 180 telephone orders. In January they received only 72 telephone orders. By what per

Korvikt [17]

Answer:

it was a 40% decrease

Step-by-step explanation:

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2 years ago

Read 2 more answers

Which point is located in quadrant IV?

alex41 [277]

Quadrant General Form of Point in this Quadrant Example
I (+, +) (5, 4)
II (−, +) (−5, 4)
III (−, −) (−5, −4)
IV (+, −) (5, −4)

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2 years ago

you want to deposit $15,000 in a bank at an interest rate of 7% per year what is the future value of this money after 3 years

Assoli18 [71]

AMOUNT DEPOSITED: $15k ($15,000)
INTEREST RATE PER YEAR: 0.07% (7%)

STEPS:
→Multiply the amount deposited ($15k) by the interest rate per year (7%).
15,000 * 0.07
= $1,050 (interest earned in 1 year)

→Multiply the interest earned from the first year ($1,050) by the amount of years that you want to calculate (3 years)
$1,050 * 3
=3,150 (interest earned in 3 years)

→ Add the interest earned (in 3 years, in this particular equation) to the amount that you deposited ($15k)
$15,000 + $3,150
=$18,150

FINAL ANSWER: $18,150

5 0

3 years ago

Apple weights are normally distriuted with a mean 0.33 pounds and and standard deviation of 0.06 pounds. Jermaine went to the st

maksim [4K]

Using the normal distribution, it is found that 10.56% of the apples weigh less than Jermaine's apple.

--------------------

In a normal distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

It measures how many standard deviations the measure X is from the mean.
After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X, that is, the proportion of measures that are less than X.

In this problem:

Mean of 0.33 pounds, thus $\mu = 0.33$ .
Standard deviation of 0.06 pounds, thus $\sigma = 0.06$ .
The proportion that is less than 0.25 pounds is the p-value of Z when X = 0.25, thus:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{0.25 - 0.33}{0.06}$

$Z = -1.25$

$Z = -1.25$ has a p-value of 0.1056.

0.1056 x 100% = 10.56%.

10.56% of the apples weigh less than Jermaine's apple.

A similar problem is given at brainly.com/question/13411796

8 0

2 years ago