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anyanavicka [17]
3 years ago
9

I need help on number 11-13 please

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
3 0
The answer to number 141
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Jane has a pre-paid cell phone with Splint. She can't remember the exact costs, but her plan has a monthly fee and a charge for
yan [13]

Answer:

The costs of the plan are $0.15 per minute and a monthly fee of $39

Step-by-step explanation:

Let

x ----> the number of minutes used

y ----> is the total cost

step 1

Find the slope of the linear equation

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

we have the ordered pairs

(100,54) and (660, 138)

substitute

m=\frac{138-54}{660-100}

m=\frac{84}{560}=\$0.15\ per\ minute

step 2

Find the equation of the line in point slope form

y-y1=m(x-x1)

we have

m=0.15\\point\ (100,54)

substitute

y-54=0.15(x-100)

step 3

Convert to slope intercept form

Isolate the variable y

y-54=0.15x-15\\y=0.15x-15+54\\y=0.15x+39

therefore

The costs of the plan are $0.15 per minute and a monthly fee of $39

6 0
3 years ago
Factor the expression using GFC/Greatest common factor. <br><br> 48y + 40x
madreJ [45]
48y + 40x factored is 8(6y+5x)
5 0
2 years ago
Read 2 more answers
Please answer this. you will get branliest if u do
Shalnov [3]
Let’s first find the angle y
Angle y = 180-(140+10)(angle sum property)
Angle y = 180-150
Angle y = 30 degrees
Angle x = 180- 110 ( linear pair )
Angle x = 70
Angle z = 180-(70+90)( angle sum property)
Angle z = 180-160
Angle z = 20
8 0
3 years ago
Read 2 more answers
4 2/3 - (-1 4/5) (by the way 4/5 is a fraction)
Free_Kalibri [48]

Answer: 6

Step-by-step explanation:

Eliminate the negative and change the operation.

4 + 1

Rewrite equation with parts separated

4 + + 1 +

Add whole numbers

4 + 1 = 5

Solve fraction

+ = ??

Find LCD of and . LCD = 15

+ =

Simplify fraction

= 1

Combine whole number and fraction

5 + 1 + = 6

4 0
3 years ago
Mark u brainliest and give 30 points.No random answers and pls give answers with explanation/steps or i will report u.​
blagie [28]

Answer:

I use equal signs throughout but they are meant to be less than or equal to signs.

s=sandwiches

4.5s+6 less than or equal to 50

The answer is s is less than or equal to 12

Step-by-step explanation:

Finding Inequality

1. we know everything costs 50 in total so that is on one side of the equal sign.

____=50

2. we know he already spent 6 dollars so the money he can spend is 6 dollars less.

____+6=50

3. Each sandwich costs 4.50 $ so how much money does he have left to spend? we figure that out by multiplying the price by the number of sandwiches.

4.5s+6=50

Solving

1. 4.5s-6=50

First use the addition property of equality and add 6 to both sides.

2. 4.5s=56

Then use the division property of equality and divide each side by 4.5

3. you get a decimal but since you can't buy half a sandwich the answer is

s is less than or equal to 12

3 0
3 years ago
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