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3 years ago

Solve each equation for y by rewriting it in slope-intercept form (y = mx + b). Also state the slope and y-intercept of each.

Mathematics

1 answer:

Radda [10]3 years ago

3 0

Answer:

Step-by-step explanation:

So we just want to get y by itself

2x - 4y = 8

4y = 2x - 8

y = (2/4)x - 2

y = (1/2)x - 2

In this form the y intercept and slope are easy to see. the slope is m and y intercept is b.

slope = 1/2

y intercept = -2

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Circle A has center of (2, 8), and a radius of 2 and circle B has a center of (5, 4), and a radius of 10. What steps will help s

SVETLANKA909090 [29]

Answer:

D.Dilate circle A by a scale factor of 5.

Step-by-step explanation:

We are given that

The center of circle A is (2,8) and radius of circle A is 2.

The center of circle B is (5,4) and radius of circle B is 10.

We have to find the steps will help to show that circle A is similar to circle B.

When two circles are similar it means the size of circles can be same or different.Therefore, radius of circles will be same or different.

But, the radius of circles are different.

Dilation: It is a transformation in which obtained figure is similar to the original figure.

Shape remains same but the size of figures are different.

Ratio of corresponding sides of two figures=Scale factor

When a circle is dilated then,

Ratio of radius of circle obtained after dilation to the radius of original circle= Scale factor

Scale factor= $\frac{10}{2}=5$

Hence, option D is true.

4 0

4 years ago

Keith is saving money for a car. He has saved the same amount each year for the past three years, and records how much he has at

noname [10]

Answer:

Keith's unit rate of change of dollars with respect to time is $1500.

Step-by-step explanation:

It is given that Keith is saving money for a car.

Year 1: 1500

year 2: 3000

year 3: 4500

Let y be the saved amount after x year.

The coordinate pairs according to the given table are (1,1500), (2,3000) and (3,4500).

The formula for rate of change is

Consider any two coordinate pairs.

Let as consider (1,1500) and (2,3000). So, Keith's unit rate of change of dollars with respect to time is

Therefore, Keith's unit rate of change of dollars with respect to time is $1500.

8 0

3 years ago

Write an example of a trinomial that cannot be factored.

OverLord2011 [107]

Answer:

$x^{2} + x + 1$

Step-by-step explanation:

a trinomial that cannot be factored has no real roots.

here is one:

$x^{2} + x + 1$

After graphing this trinomial has no intersections points with the x-axis wich means it has no roots

5 0

3 years ago

What is the perimeter of the figure?

rewona [7]

Answer:

Oh! We should start with finding the lngths of the "curvy sides". As you can see there are 2 semi circles which we can combine to make one circle with a diameter of 7. The formula for the circumference of the circle is 2πr which is also equal to the diameter x π. SO the circumeference is 7π which is this case equals 22 since they are telling us to use π as 22/7. I'm not sure about the rest but I hope this helped a little!!

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Please help me i beg of u due today my teacher be buggin

mart [117]

Answer:

1) 35+5w=110

2) the starting heart rate is 73 beats per minute

3)B

4) 6mins

Step-by-step explanation:

1) since she deposits 5 dollars each week we can multiply 5 and w to find out how much money hes depositing after all the weeks are done. We need to add that with 35 to get the TOTAL money in the bank account.

2) 73 is the y intercept. The y intercept is the number when "x" is 0. So when hes just starting out/not excersizing his heart beats 73 beats per min.

3) we know that 10% of her tips is given back to her hence x(number of tips) is multiplied by 0.1, and added to 50 to find the total amount of money she receives

4) 6 mins for 1 order

6 0

3 years ago