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2 years ago

What is y=2x-1 and y-2x=3. The x and y in both equations have to be the same. Thanks.

1 answer:

3 0

2x-1 = 2x+3
2x = 2x+4
0=4
there is no solution

The reason for this is the equations have the same slope and they have different y-intercepts. this means that they are parallel and will never touch.

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the sum of three integers is 92. the second number is three times the first number. the third number is ten less than twice the

Elanso [62]

1st number = x

2nd number = 3x

3rd number = 2x-10

x +3x + 2x-10 =92

6x - 10 = 92

6x =102

x = 102/6

x = 17

1st number = 17

2nd number = 17*3 = 51

3rd number = 17 *2 = 34-10 = 24

17 + 51 + 24 = 92

3 numbers are 17, 51 and 24

8 0

2 years ago

Find the area of a sector with a 4 inch radius and arc measure of 90 degrees. use 3.14 for pi.

gulaghasi [49]

Answer:

$\frac{90}{360} \pi{r}^{2} \\ \frac{1}{4} \times 3.14 \times { 4}^{2} \\ = 12.56 {in}^{2}$

hope this helps you....

6 0

2 years ago

Tuition. The tuition at a community college increased from $2,500 to $2,650 per semester. What was the percent of increase in th

konstantin123 [22]

Answer:

6 percent increase

Step-by-step explanation:

2650 divided by 2500 gives you 1.06 which means if 2500 is 100 percent 2650 would be 106 percent so the answer is a 6 percent increase

4 0

2 years ago

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A line includes the points (9, -7) and (-6, -2). What is its equation in slope-intercept form?

Rus_ich [418]

Answer:

$y=\frac{-1}{3}x-4$

Step-by-step explanation:

Slope-Intercept Form: y = mx + b

m - slope

b - y-intercept

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step 1: Define

Point (9, -7)

Point (-6, -2)

Step 2: Find slope m

$m=\frac{-2-(-7)}{-6-9}$

$m=\frac{-2+7}{-15}$

$m=\frac{5}{-15}$

$m=\frac{-1}{3}$

$y=\frac{-1}{3}x+b$

Step 3: Find y-intercept b

$-7=\frac{-1}{3}(9)+b$

$-7=-3+b$

$-4=b$

Step 4: Write linear equation in slope-intercept form

$y=\frac{-1}{3}x-4$

8 0

2 years ago

18 divided by (1+5)(4-2)

crimeas [40]

Answer:

= 3/2

$= \frac{18}{(1 + 5)(4 - 2)}$

$= \frac{18}{(6)(2)}$

$= \frac{18}{12}$

Simplify the fraction.

$= \frac{3}{2}$

7 0

2 years ago

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