3 years ago

Can somebody help me?

Mathematics

1 answer:

Degger [83]3 years ago

5 0

A percentage
Have a good dayyyyyy

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What number should be added to both sides of the equation to complete the square? X^2-10=7

Assoli18 [71]

I must assume that you meant <span>X^2-10x =7. If that is indeed the case, then:

</span>X^2-10x =7 => x^2 -10x + 25 - 25 = 7, so that (x-5)^2 = 32 (Add 25, then
subtract 25)
Then x-5 = plus or minus sqrt(16)sqrt(2) = 4sqrt(2).

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4 years ago

Sarah saw a hammer that was $3.50 more than twice the cost of a screwdriver. The hammer was $15.50. What was the cost of the scr

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Answer:

Step-by-step explanation:

$15.50 is $3.50 more than $12. And $12 is twice $6. The cost of the screwdriver is $6.

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3 years ago

If 15% of the customer's total is $22.05, then the customer's total is

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Answer:

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3 years ago

Candy draws a square design with a side length of x inches for the window at the pet shop. She takes the design to the printer a

choli [55]

Answer: The side length of the pet shop sign=5/4 inches

Step-by-step explanation:

Given: Candy draws a square design with a side length of x inches for the window at the pet shop.

She takes the design to the printer and asks for a sign that has an area of $16x^2-40x+25$ square inches.

Let y(x) = $16x^2-40x+25$

differentiating both sides w.r.t x we get

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4 years ago

Read 2 more answers

I need help with the explanation & answer to this question: "Janet's dinner costs $7.50. If she wants to leave a 10% tip, ho

qwelly [4]

$7.50/?=100/10 then criss cross and u will get 75/100=0.75

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3 years ago