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3 years ago

Which expressions is equivalent -8.2-5

Mathematics

1 answer:

GuDViN [60]3 years ago

8 0

Answer:

-13.2

Step-by-step explanation:

-8.2-5 essentially means that you just have to add 8.2 and 5. (disregard the signs for a moment) if you add them you get 13.2 as both of these number have a negative sign just add it and here's your answer

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What is the factored form of y = x² - 12x + 36

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work:

y = x^2 - 12x + 36

y = (x - 6) (x - 6)

y = (x - 6)^2

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Read 2 more answers

Determine if the ratio is proportional. 21/14 = 18 /12

balandron [24]

Answer:

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Step-by-step explanation:

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olya-2409 [2.1K]

The coffee shop used 52 pounds of Type A coffee.

Step-by-step explanation:

Cost of Type A coffee per pound = 5.25

Cost of Type B coffee per pound = 4.10

Total pounds used in blend = 142

Total cost = 642.00

Let,

x be the pounds of Type A coffee used

y be the pounds of Type B coffee used

According to given statement;

x+y=142 Eqn 1

5.25x+4.10y=642.00 Eqn 2

Multiplying Eqn 1 by 4.10

$4.10(x+y=142)\\4.10x+4.10y=582.20\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(5.25x+4.10y)-(4.10x+4.10y)=642.00-582.20\\5.25x+4.10y-4.10x-4.10y=59.80\\1.15x=59.80\\$

Dividing both sides by 1.15

$\frac{1.15x}{1.15}=\frac{59.80}{1.15}\\x=52\\$

The coffee shop used 52 pounds of Type A coffee.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

5 0

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