How do i solve 10 + -3 without doing that much work?

Answers

Answer 1

Answer:

Answer: instead of 10 + -3 think of it as 10 - 3. If you see a plus sign and a negative then just change it to subtraction

Step-by-step explanation:

10 + -3

10 - 3

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The population of Hillsborough County in Florida in 2010 was 1,229,226 and the landarea was 1,020 square miles. The population increased by 9.7% in 2015.
Part 1: To the nearest whole number, find the population density, in people per
square mile, for Hillsborough County in 2010.
Part 2: To the nearest whole number, how much did the population density, in people
per square mile, increase from 2010 to 2015?

Answers

Answer:

About 1205.12352941 people per square mile in 2010

About 1329.36306853 people per square mile in 2015

Explanation:

take population and divide by land area

for 2015 pop do total pop divided by 9.7 plus total pop

Find the value of x.
pls help will mark brainliest

Answers

2x+90=180 (consecutive interior angles supplementary) 2x=90 => x=45

What is 92% of 85 ( show the math used to arrive at solution

Answers

92% = 0.92

0.92 x 85 = 78.2

covert 92% as a fraction

92/100=x/85

solve it ( you should know how to solve it)

The answer is 78.2

Which of the following sets could be the sides of a right triangle?{2, 3,square root of 13 }
{2, 2, 4}
(1, 3,square root of 3 }

Answers

Answer:

1st answer

Step-by-step explanation:

From pythagorus theorem.

Since hypotenuse

$= \sqrt{ {2}^(2) + {3}^(2) }= \sqrt{ {13}}$

What does mean stand for

Answers

When you add numbers together and you divide it by the number of numbers you added is your mean. Like if you get a 90 and 91 You add them and divide it by 2 and that will be your mean.

If you have a set of numbers, add all the number up and divide them by how many numbers you have. Hope that helps!:)

K(n)=2n-2. find k(-4)

Answers

-10 is the answer
Plug in -4 for n so 2x-4-2=-10

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