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3 years ago

10+1 22 or 3 n>12 what is the answer

Mathematics

1 answer:

almond37 [142]3 years ago

6 0

Answer: um, you mean 10 + 122=132, the second one is n>4 if you want step by step look below:

Let's solve your inequality step-by-step.

3n>12

Step 1: Divide both sides by 3.

3n/3 > 12/3

n>4

You can use a numberline too.

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If 2/x+ 3/y =13 and 5/x- 4/y = -2, then x+y equals

creativ13 [48]

Answer:

$x + y = \frac{5}{6}$

Step-by-step explanation:

Let:

$u = \frac{1}{x} \\ v = \frac{1}{y}$

This allows us to manipulate the equations like we normally would.

$2u + 3v = 13 \\ 5u - 4v = - 2 \\ \\ + 8u + 12v = 52 \\ + 15u - 12v = - 6 \\ 23u = 46 \\ u = 2 \\ \\ 2(2) + 3v = 13 \\ 4 + 3v = 13 \\ 3v = 9 \\ v = 3$

Then, we return the values where they belong.

$u = \frac{1}{x} \\ 2 = \frac{1}{x} \\ x = \frac{1}{2} \\ \\ v = \frac{1}{y} \\ 3 = \frac{1}{y} \\ y = \frac{1}{3}$

Finally, we add:

$\frac{1}{2} + \frac{1}{3} = \frac{3}{6} + \frac{2}{6} = \frac{5}{6}$

7 0

3 years ago

Lori had $126.89 in her bank account. She deposited $21.49 into it and then wrote a check for her car repairs for $156.61. What

xxMikexx [17]

The answer is -8.23 dang im good

6 0

4 years ago

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If the solution of an equation is x=-2 what could the original equation be?

Katyanochek1 [597]

There are an infinite number of possibilities.
Here's one:

6x + 107 = -77x - 59

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3 years ago

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A body builder consumed 4,400 calories yesterday. Today, he consumed 3,600 calories. What is the percent decrease in number of c

Amanda [17]

4400 - 3600 = 800

Decrease = 800 Calories
Original value was 4400 Calories.

Now,
$\frac{800}{4400} \times 100 \\ = \frac{2}{11} \times 100 \\ = \frac{200}{11} = 18.18 \: \%$

After Rounding off,
Decrease percentage will be 18 %

8 0

3 years ago

A charter fishing company buys a new boat for $224,000 and assumes that it will have a trade-in value of $115,200 after 16 years

vodka [1.7K]

First, according to the information, we build a linear model, and then, the model is used to find the information asked.

a) The linear model is:

$V(t) = 224000 - 6800t$

b) The depreciated value of the boat after 10 years is of $156,000.

c) The depreciated value falls below $100,000 after 18.24 years.

d) The sketch is given at the end of the answer.

Item a:

The initial value is of $224,000, thus, the y-intercept of the linear function is of $b = 224000$ .
The value decayed to $115,200 in 16 years, thus, the slope of the linear function is: