Solve each equation for the given variable a-2b=-10 for b

Answers

Answer 1

Answer: a-2b=-10
add 2b on both sides
a=2b-10
add 10 to both sides
a+10=2b
divide both sides by 2
a/2+10/2=a/2+5=b
b=5+a/2

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Solve the inequality 5x - 4 > 4 - 3x

Answers

Answer:

x>1

Step-by-step explanation:

5x - 4 > 4 - 3x

Add 3x to each side

5x+3x - 4 > 4 - 3x+3x

8x -4 > 4

Add 4 to each sdie

8x-4+4 > 4+4

8x> 8

Divide each side by 8

8x/8 >8/8

x > 1

Step-by-step explanation:

5x-4>4-3x

5x+3x>4+4

8x>8

8x/8>8/8

x=1

A company is offering a job with a salary of $30,000 for the first year and a 2.3% raise year year after that. I know the sequence is geometric, I know the recursion equation, and I know the formula function. What I need help with is if that 2.3% raise continues every year, how much money would you earn in a 40 year career

Answers

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Find the value of 42 + 6 ÷ 2.

Answers

If you do order of operations, you divide 6 and 2 getting 3. Add 42 and 3. 45 is the answer.

Answer: the answer is 7

How many ziros in the number 1.8e10?

Answers

You spelt zero wrong and theres one zero next to the 1. Comments; Report. 0 0 0. Thanks. 0. Log in to add a comment · 12ilett; Beginner

Simplify the following radical expression:
√20

Answers

Answer:

the answer is 2√ 5

Answer:

4.472135955

Step-by-step explanation:

An eReader factory has revenues which follow the formula R=x squared + 2400x - 1,320,000, Where x is the number of eReaders sold each month. If thefactory had $80,000 in revenue last month and only has the resources to produce up to 1300 eReaders in a single month, how many eReaders were sold? Show all steps and answers

Answers

If the revenue last month was 80,000, then

   80,000 = x² + 2,400x - 1,320,000

That's the only glimmer of intelligence required to answer this question.
The rest is all a matter of solving this quadratic equation.

Subtract 80,000 from each side: x² + 2,400x - 1,400,000 = 0

This ugly thing may be factorable, but I'm not going to wander around
looking for factors. I'm going straight to the quadratic formula.
With that, I get the solutions:

   x = -1200 + or - √2,840,000

   x = 485.2
and
   x = -2,885.2

The solution that has physical significance is the first one: 485 .

When I saw the requirement that the answer must be 1300 or less,
I expected to find that both solutions to the quadratic equation were
positive, and that one of them was greater than 1300. But that didn't
happen. 485 (rounded) is the only positive solution. That's my answer,
and I'm sticking to it.

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