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2 years ago

Write an equation for each question, please! (t = years after 1960)

Mathematics

2 answers:

VashaNatasha [74]2 years ago

6 0

Answer:

1) y = - 0.54(25)

2) 0.4 = 98 - 0.54t

3) 0.6 = 2 + 0.54t

4) 98 - 0.54t = 2(2 + 0.54t)

(you asked for equations, so I think these are the equations you are looking for!)

Step-by-step explanation:

(given) y = 98 - 0.54t

(plugging in years after 1960) y = - 0.54(25)

(given) y = 98 - 0.54t

(changing percent to decimal) 40% = 0.4

(plugging in percentage) 0.4 = 98 - 0.54t

(given) y = 2 + 0.54t

(changing percent to decimal) 60% = 0.6

(plugging in percentage) 0.6 = 2 + 0.54t

(given)

(male) y = 98 - 0.54t

(female) y = 2 + 0.54t

(setting up the equation so male is 2 times the percent of female)

98 - 0.54t = 2(2 + 0.54t)

lisabon 2012 [21]2 years ago

6 0

1: y = 0.54
2: 0.4 = 98 - 0.54t
3: 0.6 = 2 + 0.54t
4: 98 - 0.54t = 2(2 + 0.54t)

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alina1380 [7]

Answer:

1) For each value of x, a value of y is increased by 5.

x = 0, y = 5

x = 1, y = 10

x = 2, y = 15

x = 3, y = 20

------------------------------------------------------------------------------------------

2) For each two values of x, a value of y is increased by 10.

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-------------------------------------------------------------------------------------------

x = 0, y = 1

x = 1, y = $\frac{7}{5}$

x = 5, y = 3

x = 10, y = 5

-------------------------------------------------------------------------------------------------

x = 0, y = 2

x = 1, y = 17

x = 2, y = 32

x = 5, y = 77

Step-by-step explanation:

This is as easy as replacing x for the actual value show on the table.

$y=5x+5$

When x = 0, y = ?

$y=5(0)+5\\y=0+5\\y=5$

When x = 1, y = ?

$y=5(1)+5\\y=5+5\\y=10$

When x = 2, y = ?

$y=5(2)+5\\y=10+5\\y=15$

When x = 3, y = ?

$y=5(3)+5\\y=15+5\\y=20$

-------------------------------------------------------------------------------------------------------

$y=5x-2$

When x = 0, y = ?

$y=5(0)-2\\y=0-2\\y=-2$

When x = 2, y = ?

$y=5(2)-2\\y=10-2\\y=8$

When x = 4, y = ?

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When x = 6, y = ?

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----------------------------------------------------------------------------------------------------

$y=\frac{2}{5}x +1$

When x = 0, y = ?

$y=\frac{2}{5}(0) +1$

$y=0 +1\\y=1$

When x = 1, y = ?

$y=\frac{2}{5}(1) +1\\y=\frac{2}{5} +1$

$y=\frac{2}{5}+1(\frac{5}{5})\\ y=\frac{2}{5}+\frac{5}{5} \\y=\frac{7}{5}$

When x = 5, y = ?

$y=\frac{2}{5}(5) +1\\y=2+1\\y=3$

When x = 10, y = ?

$y=\frac{2}{5}(10) +1\\y=2(2) +1\\y=4+1\\y=5$

-------------------------------------------------------------------------------------------------

$y=15x+2$

When x = 0, y = ?

$y=15(0)+2\\y=0+2\\y=2$

When x = 1, y = ?

$y=15(1)+2\\y=15+2\\y=17$

When x = 2, y = ?

$y=15(2)+2\\y=30+2\\y=32$

When x = 5, y = ?

$y=15(5)+2\\y=75+2\\y=77$

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3 years ago

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