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3 years ago

Solve for x. 30x-20=50

2 answers:

7 0

30x + 20 = 50

20 + -20 + 30x = 50 + -20

0 + 30x = 50 + -20 30x = 50 + -20
50 + -20 = 30 30x = 30

x = 1

MaRussiya [10]3 years ago

6 0

30x - 20 = 50
use inverse operations to isolate x

30x - 20 = 50
+ 20 +20

30x = 70
(30x = 70) /30

x= 7/3 (this is the simplified term)

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Answer:

$y=-55x+570$

Step-by-step explanation:

The correct question is

Naoya read a book cover to cover in a single session, at a rate of 55 pages per hour. After 4 hours, he had 350 pages left to read.

Let y represent the number of pages left to read after x hours.

Complete the equation for the relationship between the number of pages left and number of hours.

Let

x -----> the time in hours

y ----> the number of pages left to read

we know that

The linear equation in point-slope form is equal to

$y-y1=m(x-x1)$

In this problem we have

$m=-55\frac{pages}{hour}$ ----> is negative because the linear function is decreasing

$point\ (4,350)$

substitute

$y-350=-55(x-4)$

$y-350=-55x+220$

$y=-55x+220+350$

$y=-55x+570$

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3 years ago

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5 0

1 year ago

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Is 1|3 and 3|3 are equal ?

netineya [11]

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3 0

2 years ago

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Answer:

Midpoint is $(\frac{-37 }{2}, 14)$

Step-by-step explanation:

Midpoint = $(\frac{x_{1} + x_{2} }{2}, \frac{y_{1} + y_{2} }{2})$

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2 years ago

A coordinate plane with a line passing through (0, negative 3), (2, 0), and (4, 3).

adell [148]

Answer:

$y=\frac{3}{2}x-3$

Step-by-step explanation:

The given line passes through: (0,-3), (2,0), and (4,3).

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Using $(x_1=0,y_1=-3),and\:(x_2=2,y_2=0)$ we find the slope to be

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3 years ago

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