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Roman55 [17]
3 years ago
10

When you divide fractions you should

Mathematics
2 answers:
mel-nik [20]3 years ago
7 0
Kcf=keep the first fraction; change the division sign to a multiplication sign and flip the last fraction so that it is the reciprocal and multiply to get your answer
quester [9]3 years ago
4 0
Flip the second fraction, and then multiply them. when you do that, simplify the total, and you got your answer
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Point slope formula.. help
sertanlavr [38]
<h3>Answer:   y = 2x+6</h3>

========================================================

Explanation:

We'll need the slope first

m = slope

m = (y2-y1)/(x2-x1)

m = (0-(-4))/(-3-(-5))

m = (0+4)/(-3+5)

m = 4/2

m = 2

The slope is 2.

Next, pick either of the two given points to play the role of (x_1,y_1)

Let's say we picked on (-5,-4). The order doesn't matter so you could easily pick the other point as well.

We'll plug these items into the point slope equation below to solve for y.

y - y_1 = m(x - x_1)\\\\y - (-4) = 2(x - (-5))\\\\y  + 4 = 2(x +5)\\\\y  + 4 = 2x +10\\\\y  = 2x +10-4\\\\y  = 2x +6\\\\

Or we could have picked on (-3,0). The m value stays the same (at m = 2)

y - y_1 = m(x - x_1)\\\\y - 0 = 2(x - (-3))\\\\y = 2(x +3)\\\\y = 2x+6\\\\

This one takes a few less steps. Either way, we get to the same answer.

You only need to pick one of the points, but doing both of them helps show that the two points are on the same line. It helps confirm the answer.

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

Another way to check the answer is to plug the (x,y) coordinates into y = 2x+6 for each point.

So let's say we check (x,y) = (-5,-4)

y = 2x+6

-4 = 2(-5)+6 ... replace x with -5, replace y with -4

-4 = -10+6

-4 = -4

This confirms the first point. I'll let you check the second point.

6 0
3 years ago
Read 2 more answers
Caleb has an offer from a credit card issuer for 0% APR for the first 30 days and 17.68%
svetlana [45]

Solution:- Answer is 19.33%

Annual percentage rate (APR) is the yearly rate for a price which have to pay for borrowing money through credit card.

Here Caleb has an offer from a credit card issue for i=0% APR for the first 30 days.

now, effective interest rate for n= 30 days  

=r=(1+\frac{i}{n} )^n-1\\\Rightarrow\ r=(1+\frac{0}{30} )^{30}-1\\\Rightarrow\ r=(1+0)^{30}-1=1-1=0

After 30 days APR =17.68%=0.1768

n=365-30=335 days

now the effective interest rate for n=335 days

=r=(1+\frac{i}{n} )^n-1\\\Rightarrow\ r=(1+\frac{0.1789}{335} )^{335}-1\\\Rightarrow\ r=(1+0.000527)^{335}-1=(1.000527)^{335}-1=1.1933-1=0.1933

=19.33%

So the effective interest rate for 365 days =0+19.33% =19.33%

So fourth option is correct.

6 0
3 years ago
Read 2 more answers
The graph of the distance a car travels at a constant speed passes through the points (0,0) and 2,136). The x scale is hours and
Zepler [3.9K]

We are given that

y-scale is a distance in miles

x-scale is a time in hours

and we are given

The graph of the distance a car travels at a constant speed passes through the points (0,0) and (2,136)

so, points would be

(0,0)

x1=0 , y2=0

(2,136)

x2=2 , y2=136

so, slope would be speed

because speed = distance / time

we can use slope formula

m=\frac{y_2-y_1}{x_2-x_1}

now, we can plug values

m=\frac{136-0}{2-0}

m=68 miles per hour

so, option-B..........Answer


6 0
3 years ago
Read 2 more answers
Julia is evaluating the expression 17(144). If she uses the distributive property to rewrite the expression with friendlier numb
Igoryamba

Answer:

In order to evaluate the given expression 17(144) using the distributive property, Julia would rewrite the expression in friendlier numbers that is:

(10+7)(100+40+4)

Step-by-step explanation:

We are given an expression 17(144) that we have to evaluate let us say without using the calculator.

Sometimes, it is easier to solve a complex problem in multiple steps as the problem gets distributed and the difficulty level lowers for multiple smaller sets.

Julia would rewrite the expression as:

(10+7)(100+40+4)

Then solve it using distribution method as follows:

10(100+40+4)+7(100+40+4)

1000+400+40+700+280+28

= 2448

7 0
3 years ago
Read 2 more answers
What does circumference stand for?
lord [1]

Answer:

Think of it as the perimeter of the circle 

6 0
3 years ago
Read 2 more answers
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