2 years ago

Pleaseee helpppp What is the sum of -3 and -12

Mathematics

1 answer:

faltersainse [42]2 years ago

7 0

Answer:

-15

Step-by-step explanation:

When adding together two negatives it works just as it would with positive numbers, just with the negative sign to properly negate it.

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What value of × is in the solution set of -5×-15>10+20×

vazorg [7]

Answer: $x$

Step-by-step explanation:

$-5x-15>10+20x$

Subtract 20x

$-5x-20x-15>10$

add 15

$-5x-20x>10+15$

Combine like terms

$-25x>25\\$

Divide by -25 (NOTE: When dividing or multiplying by negative numbers the inequality sign flips.)

$x$

5 0

3 years ago

7/10 + 1/2 Find sum in simplest form

igomit [66]

7/10 + 1/2

Find common denominator will be 10

7/10+ 1×5/2×5

7/10+5/10

Add numerators keeping same denominator

7+5/10

Simplify

12/10

Reduce fraction

6/5

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3 years ago

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What is the average rate of change of f over the interval [3,4]?

masya89 [10]

Answer:

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

$\frac{f(b)-f(a)}{b-a}$

Here [ a, b ] = [ 3, 4 ] , then

f(b) = f(4) = - 1 ← from table

f(a) = f(3) = - 5 ← from table , then

average rate of change = $\frac{-1-(-5)}{4-3}$ = $\frac{-1+5}{1}$ = 4

3 0

3 years ago

Jack Thomas has an ice cream cone with 280 calories. How long would it take him to burn off the calories by:

mariarad [96]

Well, it depends on what he's doing. Is he walking, jogging, or running? If he walked at a normal pace for an hour he would burn 415calories.

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3 years ago

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You miss 3 out of 10 questions on a science quiz and 4 out of 15 questions on a math quiz. Which quiz has a higher percent of co

EastWind [94]

3 out of 10 quiz because if you divide 3 by 10 it's 0.3 but if you do 4/15 it's 0.26...

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2 years ago

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