3 years ago

34.65 divided by 1.5

Mathematics

1 answer:

rodikova [14]3 years ago

3 0

Answer: 23.1, 231/10, or 23 1/10

Step by step explanation:

33.65/1.5 - divide the terms

23.1

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kakasveta [241]

Answer:

x = -12

y = 3

Step-by-step explanation:

$1/2x + 6(x+15) = 12\\1/2x + 6x + 90 = 12\\6\frac{1}{2} x + 90 = 12\\6\frac{1}{2} x= -78\\x = -12$

$y = x + 15\\y = -12 + 15\\y = 3$

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A 10 inch pizza cost $8 while a 1w inch pizza cost $10.50. Which ilsize is the better deal?

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3 years ago

An angle in standard position measures 5п 8 radians. In which quadrant does the terminal side of this angle lie? O Quadrant I II

user100 [1]

Answer:

I've attached a picture of a unit circle with the quadrant labeled.

Calculate the degree of 5п 8 radians:

$\frac{5\pi }{8} =\frac{5*180}{8} =\frac{900}{8} =112.5$

Locate the general location of 112.5° on the unit circle:

It's between 120°( $\frac{2\pi }{3}$ ) and 90°( $\frac{\pi }{2}$ ).

Find the quadrant it lies in:

Quadrant II

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3 years ago

Write as a single term: sin(25°) cos(10°) − cos(25°) sin(10°).

eduard

Answer: cos (25° + 10°)

Step-by-step explanation: The expression:

sin(25°) cos(10°) − cos(25°) sin(10°)

is associated to the expression for the cosine of the sum of two angles that is:

cos (α+β) = sinα *cosβ -cosα*sinβ

Hence if we do α = 25° and β = 10°

by subtitution we get:

cos (25° + 10°) = sin(25°) cos(10°) − cos(25°) sin(10°)

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