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2 years ago

Helpppppppppp.......

Mathematics

2 answers:

ruslelena [56]2 years ago

5 0

Answer:

36 centimeters in the poster

Step-by-step explanation:

Let us plan out our steps, and solve for each:

1. Given the information, let us create a proportionality as such:

3 = 1 ⇒ x - centimeters in the poster

x 12

2. Now let us cross multiply, and solve through simple algebra for x:

3 * 12 = x,

x = 36 centimeters in the poster

Andrew [12]2 years ago

4 0

Answer:

36cm

Step-by-step explanation:

The scale is 3 to 1, so the poster size is 3 times larger than the actual thing.

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What is the quotient of -1/8 and - 1/3

eimsori [14]

Answer:

Step-by-step explanation:

(-1/8)/(-1/3) = (-1/8)×(3/-1) = (-1)(3)/(8)(-1) = -3/-8 = 3/8

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2 years ago

If y varies inversely as x and y=23 when x=8 find y when x=4

valina [46]

<h2>INVERSE VARIATION</h2>

EQUATION: 

$y = \frac{k}{x}$

––––––––

First, find the constant of variation k using the formula k=xy.

$23 = \frac{k}{8}$

$k = (8)(23)$

$k = 184$

––––––––

Then, find y if x is equal to four using the formula y=184/x.

$y = \frac{184}{x}$

$y = \frac{184}{4}$

$y = 46$

Final Answer:

5 0

2 years ago

Jake bakes and sell apple pies. he sells each pie for $5.75. the materials to make the pies cost $40. the boxes jake puts the pi

dezoksy [38]

Answer:

$18\ pies$

Step-by-step explanation:

Let

x-------> the number of pies

we know that

$5.75x-40-12.50=50$ -----> linear equation that represent the situation

solve for x

$5.75x-52.50=50$

$5.75x=50+52.50$

$5.75x=102.50$

$x=102.50/5.75=17.8$

Round to the nearest whole number

$17.8=18\ pies$

8 0

3 years ago

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In the figure, angle D measures 45° and angle E measures 87°. What is the measurement of angle H?

scZoUnD [109]

Hat means y + z = 180.

y is thrice than z means y = 3 * z. 

replace y with 3 * z in the equation of y + z = 180 to get 3 * z + z = 180. 

combine like terms to get 4 * z = 180. 

solve for z to get z = 180 / 4 = 45 degrees. 

since y = 3 * z, then y = 3 * 45 = 135 degrees. 

y = 135
z = 45 

y + z = 180 becomes 135 + 45 = 180
y = 3 * z = 135 = 3 *45 

solution is confirmed to be good.

3 0

3 years ago

Read 2 more answers