If three times a number minus 2 equals 13, what is the number?

Answers

Answer 1

Answer: Change the messy words into numerals
3 times a number minus 2    equals    13
3 × n - 2 = 13

3n - 2 = 13
take 2 to the other side
3n - 2 + (2) = 13 + (2)
3n = 15

Divide by 3 on either sides to isolate n
$(3n)/(3)$ = $(15)/(3)$
3 and 3 cancels out

n = 5

check:
3 times 5 minus 2 equals 13
3   × 5 - 2 = 13
15 - 2 = 13
13 =    13

The number is 5

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Read the following sentence from Jack London's White Fang:"It's the only contraption that'll ever hold One Ear," he said. "He can gnaw through leather as clean as a knife an' jes' about half as quick.

Based on the context in this sentence, what is the best explanation for a contraption?

A complicated device or mechanism
A moving or rotating machine part
A manufactured good
A sinister restraint

Answers

Although this is english and you wrote this as a math question im still going to help. Im going to say B only because where it says he can gnaw through leather. the answer is A moving or rotating machine part.

What is estimate 4.23-2.51

Answers

the answer is 1.72 and it would be 2 if u estimated

I just subtract 4.23-2.51 then I got the answer
the answer is 1.72

A bank pays 5% interest compounded annually. What principal will grow to $12,000 in 10 years.

Answers

Answer: 7366.96 dollars

========================================================

Use the compound interest formula:

A = P(1+r/n)^(n*t)

where in this case,

A = 12000 = amount after t years

P = unknown = deposited amount we want to solve for

r = 0.05 = the decimal form of 5% interest

n = 1 = refers to the compounding frequency (annual)

t = 10 = number of years

-------

Plug all these values into the equation, then solve for P

A = P(1+r/n)^(n*t)

12000 = P(1+0.05/1)^(1*10)

12000 = P(1.05)^(10)

12000 = P(1.62889462677744)

12000 = 1.62889462677744P

1.62889462677744P = 12000

P = 12000/1.62889462677744

P = 7366.95904248911

P = 7366.96

The Pool Fun Company has learned that, by pricing a newly released Fun Noodle at $4, sales will reach 8000 Fun Noodles per day during the summer. Raising the price to $5 will cause the sales to fall to 6000 Fun Noodles per day. Assume that the relationship between sales price, x, and number of Fun Noodles sold, y, is linear. Write an equation in slope-intercept form describing this relationship. Use ordered pairs of the form (sales price, number sold).

type your answer in slope intercept
b. predict the daily sales of Fun Noodles if the price is $4.50

Answers

Answer: PART A:

The generic equation of the line is:

y-yo = m (x-xo)

First we look for the slope of the line:

m = (y2-y1) / (x2-x1)

m = ((5000) - (6000)) / (4-3)

m = -1000

Then, we substitute any point in the generic equation:

(xo, yo) = (4, 5000)

Substituting:

y-5000 = (- 1000) (x-4)

Rewriting:

y = -1000x + 4000 + 5000

y = -1000x + 9000

The equation is:

y = -1000x + 9000

PART B:

For the price of 3.50 we have:

y = -1000 * (3.5) +9000

y = 5500

Step-by-step explanation:

Find the seventh term of the expansion of (-3x-2y)^11

Answers

Answer:

The answer is A

Step-by-step explanation:

I hope this helps you

Is 2 gallons equal to 10 quarts

Answers

no two gallons is 8 quarts

2 gallons would be 8 quarts

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