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3 years ago

5(2-y)+y=-6 Please the yr is almost over

Mathematics

2 answers:

KATRIN_1 [288]3 years ago

8 0

Answer:

Step-by-step explanation:

5(2-y)+y=-6
10-5y+y= -6
10-4y= -6
4y=10+6
4y=16
y=16/4
y=4

lana [24]3 years ago

3 0

Answer: 4

Step-by-step explanation:

16 - 4y =-4 • (y - 4)

-4 • (y - 4) = 0

y-4 = 0

y = 4

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A bowling alley charges x dollars per guest and a fixed $50 rental fee for parties. Which equation represents the total cost,y,

dmitriy555 [2]

Answer:

y = 9x + 50

Step-by-step explanation:

No choices but an equation would be:

y = 9x + 50

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4 years ago

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A hat is on sale for h dollars. The regular price is 7 times as much. Charlie has enough money to buy two hats at the regular pr

Nostrana [21]

Answer:

Charlie can buy 14 hats at the sale price

Step-by-step explanation:

Let

h ----> the sale price of the hat

x ---> the regular price of the hat

we know that

$x=7h$ ----> equation A

Two hats at the regular price is equal to multiply 2 by x

Multiply by 2 equation A both sides

$2x=(7h)*2$

$2x=14h$

2 hats at the regular price cost the same that 14 hats at the sale price

therefore

Charlie can buy 14 hats at the sale price

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3 years ago

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Alex17521 [72]

Answer:

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3 years ago

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A grocery store sells tangerines in 25 kg bags. A customer bought 4 kg of tangerines for a school party. How many bags did he bu

inna [77]

Answer:

D) 4/25

But didn't he have to buy at least the whole 25 KG bag?

Step-by-step explanation:

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3 years ago

What is the coefficient of x^2 y^3 in the expansion of (2x+y)^5

Anna35 [415]

If it's x²y³ then we know it's the second term of the expansion, that known we can use the combination

C(5, 2) = 5!/(2!.3!) = 10

Then if we had something like

(a + b)^5 our second term would be 10a²b³ but as we can see it's "a²"

And in our case we have 2x as a

So we must do 2² too

2² = 4

10 . 4 = 40

Then our second term of the expansion would be

40x²y³

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4 years ago