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creativ13 [48]
3 years ago
13

4+(x+y)=(4+ )+y please answer I need it now

Mathematics
1 answer:
Schach [20]3 years ago
4 0

x=0

4+(x+y)=(4+)+y

4 + x + y = 4 + y

Subtract y from both sides

4 + x + y - y = 4 + y - y

Simplify

4 + x = 4

Subtract 4 from both sides

4 + x - 4 = 4 - 4

Simplify

x = 0

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The circumference of a circle is 65?. In terms of pi, what is the area of the circle?
iVinArrow [24]

Answer:

1056.25π square units

Step-by-step explanation:

A few formulas an definitions which will help us:

(1) \pi=\frac{c}{d}, where c is the circumference of a circle and d is its diameter

(2) A=\pi r^2, where A is the area of a circle with radius r. To put it in terms of d, remember that a circle's diameter is simply twice its radius, or mathematically, (3) d=2r \rightarrow r=\frac{d}{2}.

We can rearrange equation (1) to put d in terms of π and c, giving us (4) d = \frac{c}{\pi}, and we can make a few substitutions in (2) using (3) and (4) to get use the area in terms of the circumference and π:

A=\pi r^2\\=\pi\left(\frac{d}{2}\right)^2\\=\pi\left(\frac{d^2}{4}\right)\\=\pi\left(\frac{(c/\pi)^2}{4}\right)\\=\pi\left(\frac{c^2/\pi^2}{4}\right)\\=\pi\left(\frac{c^2}{4\pi^2}\right)\\\\=\frac{\pi c^2}{4\pi^2}\\ =\frac{c^2}{4\pi}

We can now substitute c for our circumference, 65, to get our answer in terms of π:

A=\dfrac{65^2}{4\pi}=\dfrac{4225}{4\pi}=1056.25\pi

8 0
3 years ago
Read 2 more answers
Solve for r 4/r = 5/7
katen-ka-za [31]

Work is provided in the image attached.

6 0
3 years ago
Which of the following is a correct way to name the object shown? Check all
Sidana [21]

9514 1404 393

Answer:

  \textbf{C. }\overline{AB}\\\textbf{D. }\overline{BA}

Step-by-step explanation:

The letters designating the end points of the segment may be listed in either order. The symbol over the pair of letters is a bar with no arrows on it.

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Arrows on the bar over the point names indicate a ray (arrow to the right) or a line (double-ended arrow). This is only a segment, which does not extend beyond its end points.

7 0
3 years ago
Over the first five years of owning her car, Gina drove about 12,100 miles the first year, 15,758 miles the second year, 12,200
grandymaker [24]
To find the mean, add up all of the miles and divide by the number of years.  12100 + 15758 + 12200 + 11800 + 12750 = 64608.   64608/5 = 12921.9.  The mean (the average) is 12,921.9 miles.

To find the median, put the numbers in order and find the middle number.  The middle number is 12200.  The median (middle number) is 12,200 miles

To find the mode, you would look for the number that is repeated the most.  In this data set, no number repeats, so there is no mode.  There is no mode for this data set.

The mean (average) would be the best measure of central tendency to predict how many miles Gina will drive in the sixth year.

I hope this helps! Can I have Brainliest, please? :)

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Please help me on my homework
balu736 [363]
Please send something about what problem 6 is and then I can answer the question under comments. Thanks! When I answer the question, plz mark this as Brainliest!
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