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3 years ago

PLEASE HELP ME IM STUCK

Mathematics

2 answers:

Tanya [424]3 years ago

8 0

Answer:

Step-by-step explanation:

$(5x^{2} + 7) - (3x - 2)\\5x^{2} + 7 - 3x - (-2)\\5x^{2} + 7 - 3x + 2\\ B - 5x^{2} - 3x + 9\\$

Tems11 [23]3 years ago

3 0

Answer:

5x^2 -3x +9

Step-by-step explanation:

To subtract, line up the common terms. I add a 0 term to keep the terms in line.

5x^2 + 0x +7

- (0x^2 +3x- 2 )

------------------------

Distribute the negative sign.

5x^2 + 0x +7

- 0x^2 -3x + 2

------------------------

5x^2 -3x +9

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Nitric acid (specific gravity 1.42) costs $51.95 per liter. A student spills 5.112 kg of nitric acid in the laboratory, what is

Leno4ka [110]

Answer:

The cost of wasted nitric acid is $187.02

Step-by-step explanation:

Since it is given that specific gravity of Nitric Acid is 1.42 Thus the density of nitric acid is

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Since the mass of the nitric acid is given to be 5.112 kg = 5112 grams

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