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3 years ago

Hi, I am doing math at home, and I was confused on this problem. Thank you for helping.

Mathematics

1 answer:

Murrr4er [49]3 years ago

4 0

Answer:

simplified the answer ( i think) is $-\frac{3}{56}$

Step-by-step explanation:

Thank you for being so polite you were when u asked ur question, really hope this helps

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The rate on a cell phone is $0.22 per minute. If Izzy uses her phone for 2 hours, how much does she pay?

Molodets [167]

Answer:

$26.4

Step-by-step explanation:

ight 60 min in an hour

.22 per minute

.22 * 60 = 1 hour rate = $13.2

Multiply dat by 2 for 2 horas

13.2 * 2 = $26.4

5 0

3 years ago

Find the equation of the line that passes through the following two points: (3, -7) and (7, 2)

Wittaler [7]

Answer:

$y=\frac{9}{4}x-\frac{55}{4}$

Step-by-step explanation:

Slope-intercept form: y = mx + b

Slope formula: $\frac{y2-y1}{x2-x1}$

Given points: (3, -7), (7, 2)

(3, -7) = (x1, y1)

(7, 2) = (x2, y2)

To write the equation in slope-intercept form, we need to find the slope(m) and the y-intercept(b) of the equation.

First, let's find the slope. To do this, input the given points into the slope formula:

$\frac{2-(-7)}{7-3}$

Simplify:

2 - (-7) = 2 + 7 = 9

7 - 3 = 4

$\frac{9}{4}$

The slope is $\frac{9}{4}$ .

To find the y-intercept, input the slope and one of the given points(in this example I'll use point (7, 2)) into the equation and solve for b:

$2=\frac{9}{4}(7)+b$

$2=\frac{63}{4}+b$

$-\frac{55}{4} =b$

The y-intercept is $-\frac{55}{4}$ .

Now that we know the slope and the y-intercept, we can write the equation:

$y=\frac{9}{4}x-\frac{55}{4}$

6 0

3 years ago

Which quantity is proportional to 12⁄15?

Nezavi [6.7K]

0.8 try that

Step-by-step explanation:

I think thats right

3 0

3 years ago

What is the fraction for 45 divided by 20 please show work

lianna [129]

Answer:

9/4

Step-by-step explanation:

The divide symbol is also the line that separates the numerator and the denominator, so 45÷20 can also be written as 45/20.

We can see that both 45 and 20 are divisible by 5, so we can simplify the fraction down to 9x5/4x5, and then we cancel out the 5s and are left with 9/4

4 0

3 years ago

What is the value of x in the function f (x)=4/3x+6 when f (x) = 22?<br> x=?

mamaluj [8]

Answer:

$x=12\\$

Step-by-step explanation:

$f(x)=22\\\\\frac{4}{3}x +6=22\\\\\frac{4}{3}x=16\\\\x= 12$

8 0

3 years ago