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3 years ago

R^2 = 4r-4 Please show steps

Mathematics

1 answer:

natita [175]3 years ago

8 0

Answer:

r = 2

Step-by-step explanation:

$r^{2}$ = 4r-4

square root both sides

r = $\sqrt{}$ 4r-4

r = 2r-2

2r-r = 2

r = 2

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Solve the proportion/percent problem:

Shtirlitz [24]

The change that Angie will receive from an $100 bill is $38.944.

<h3>How to calculate the value?</h3>

Angie went to the store and bought 3 pairs of tennis shoes that each cost $24. The total cost will be:

= 3 × $24 = $72

Sales tax was then calculated at 6%. This will be:

= 6% × $72

= $4.32

Total cost = Cost + Tax

= $72 + $4.32

= $76.32

Coupon off = 20% × $76.32 = $15.264

Total amount paid = Cost - Coupon

= $76.32 - $15.264

= $61.056

The change gotten will be:

= $100 - $61.056

= $38.944

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1 year ago

Jessica's teacher asks a class to find the largest number that is smaller than 4.5. Jessica's friend Jeevan gives the answer 4.4

Ber [7]

4.4 is not a whole number so it isn’t the largest number that is also less than 4.5. The correct answer could be 4

5 0

3 years ago

I need help with #7 c and d

Misha Larkins [42]

Answer:

c. 33.0%

d. 14.5%

Step-by-step explanation:

For answering questions about percentages in different categories or combinations of categories, it is convenient to find the totals of rows and columns in the table. These totals are shown in the attached.

Students who surf total 32+65 = 97. Of those, 32 also skateboard. The requested percentage is ...

32/97 × 100% ≈ 33.0% . . . . surfers who also skateboard

The total number of students is 166. Of those, the number who neither surf nor skateboard is 24. That percentage is ...

24/166 × 100% ≈ 14.5% . . . . students who don't surf or skateboard

_____

<em>Additional comment</em>

a. 97/166 ≈ 58.4% surf

b. 89/166 ≈ 53.6% do not skateboard

This sort of table is called a "two-way table." One set of categories is represented in rows, another set is represented in columns. This table is filled with <em>frequencies</em>. Such tables can also display <em>relative frequencies</em> by dividing the entire table by the total of totals in the lower right corner.

3 0

2 years ago

Pls awnser i will give brainliest pls pls

Airida [17]

Answer:

Step-by-step explanation:

Divide the smaller numbers in the table by the larger numbers (in this case diameter divided by circumference) and then compare that with the choices.

5 0

3 years ago

The figure below has a point marked with a large dot.

OleMash [197]

Therefore ,The marked point will now have the updated coordinates P' (2, 7).

<h3>Define Translation of Points on a Coordinate Plane.</h3>

When a figure is transferred from one area to another without altering its size, shape, or orientation, a translation takes place. If we know which way and how far the figure to be moved, we can draw the translation in the coordinate plane.

Here,

On an X-Y coordinate plane, a figure is plotted.

When translating a figure 7 units to the down, we must provide the coordinates of the indicated point in the original figure

"(x, y)" = "(x + m, y + n)"

In response to the query, we have

The specified point's coordinates are: P (5,4).

The new coordinates of the indicated spot after this figure is translated 6 units to the right will be -

P'( 5,4- 7) = P'(5, -3) (5, -3)

As a result, the designated point's new coordinates are P' (5, -3)

The new coordinates of the marked point will be - P'(5, -3)

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6 0

1 year ago