3 years ago

Calvin Butterball buys a book for $14.70, which is a 30% discount off the regular price. What is the regular price of the book?

Mathematics

1 answer:

Lesechka [4]3 years ago

8 0

19.11$ is the answer

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HELP DUE IN 10 MINS! <br><br> The lighthouse is ?? feet above the water.

jasenka [17]

Answer:

<u>Use tangent:</u>

BL/BS = tan S
x / 144 = tan 25°
x = 144 tan 25°
x = 67 ft (rounded)

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irinina [24]

(A) The value of x is 90 degrees. (B) The angle is a right angle.

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Need help on question 4??

Anit [1.1K]

HK consists of two part, HJ and JK

HK = HJ + JK

We know that:

HK = 12.2ft

JK = 3.1ft

HJ = ?

Let's plug our values into the equation above.

12.2ft = HJ + 3.1ft

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3 years ago

Factor, show all steps. x2 – 16x + 64 = 0

lora16 [44]

$x^2-16x+64=0$

Method 1.

Use $(a-b)^2=a^2-2ab+b^2$

$x^2-2\cdot x\cdot8+8^2=0\\\\(x-8)^2=0\\\\(x-8)(x-8)=0$

Method 2.

$x^2-8x-8x+64=0\\\\x(x-8)-8(x-8)=0\\\\(x-8)(x-8)=0$

The solution to this equation is the number 8

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3 years ago

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How many square inches are in a square foot?

olga55 [171]

1 foot = 12 inches

(1 foot) x (1 foot) = (1 foot)² = (12 inches) x (12 inches) = 144 inches²

5 0

4 years ago

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