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2 years ago

Can someone please help me i don’t get this at all!?

Mathematics

1 answer:

Verdich [7]2 years ago

8 0

She bought N pencils last month for 288, as the amount is in pennies. This month she bought N+12 for 720.

288/N = 720 / (N+12)
288(N+12) = 720N
288N + 3456 = 720N
3456 = 720N - 288N
3456=432N
N=8

She bought 8 pencils last month for 288, which is 36 cents each. And she bought 20 pencils this month for 720 which is 36 cents each. Hope this helped :)

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If x=7+root 40 ,find the value of root x+1by the root of x

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Chapter : Algebra

Study : Math in Junior high school

x = 7 + √40

find √x of √x + 1

= √x + 1

= √(7+√40) + 1

in Formula is :

= √7+√40 = √x + √y

= (√7+√40)² = (√x + √y)²

= 7+√40 = x + 2√xy + y

= 7 + √40 = x + y + 2√xy

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substitution Equation 1 to 2 :

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#For x = 5

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= y = 2

#For x = 2

= y = 7 - x

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and his x and y was find :

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= x = 5 and y = 2

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2 years ago

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Answer:

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And, the total weight of the basket of apples was 20 pounds.

Step-by-step explanation:

The question is incomplete so, the complete question is below:

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