3 years ago

What does sum mean I math?

Mathematics

2 answers:

Minchanka [31]3 years ago

8 0

Answer:

Sum means the total amount of something.

Andreas93 [3]3 years ago

3 0

Answer:

the sum in math turms is addition.

Step-by-step explanation:

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Which ordered pair in the form (x,y) is a solution of this equation? 7x-5=1

leva [86]

ANSWER

B. (-2,-3)

EXPLANATION

The given equation is

$7x - 5y = 1$

We want determine which of the ordered pairs is a solution to the given equation.

For point A(-3,-2)

$7( - 3) - 5( - 2) = 1$

$- 21 + 7 = 1$

This statement is false.

For option B(-2,-3)

We have

$7( - 2) - 5( - 3) = 1$

$- 14 + 15 = 1$

For option C(0,4)

We have

$7(0) - 5(4)=1$

$0 - 20=1$

For option D(4,0)

We have

$7(4) - 5(0)=1$

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This statement is false.

8 0

4 years ago

0.8(5x+15)=2.6-(x+3)

elena55 [62]

0.8(5x + 15) = 2.6 - x + 3 Use the Distributive Property
4x + 12 = 2.6 - x + 3 Combine like terms (2.6 and 3)
4x + 12 = 5.6 - x Add x to both sides
5x + 12 = 5.6 Subtract 12 from both sides
5x = -6.4 Divide both sides by 5
x = -1.28

4 0

4 years ago

What does sum mean I math?​

What does sum mean I math?