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andreev551 [17]
2 years ago
9

What is the perimeter of a semicircle if the diameter is 2

Mathematics
2 answers:
Lelechka [254]2 years ago
5 0

Answer: π+2

Step-by-step explanation:

perimeter of a whole circle is

2πr

r = 1

2π

divide by 2 bc its a semicircle

2π/2 = π

π+diameter

π+2

e-lub [12.9K]2 years ago
4 0

Answer:

Step-by-step explanation:

d = 2

arc length of semicircle = ½×circumference = ½×πd = π

perimeter of semicircle = π + d = π+2

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Expression of "Eight less than half the sum of 4 and k” into symbol
jolli1 [7]

Answer:

\frac{4+k}{2} -8

Step-by-step explanation:

We're going to have to work backwards.

The sum of 4 and k is 4+k.

Half is simply that divided by 2.

\frac{4+k}{2}

Now, we'll subtract 8 from it.

\frac{4+k}{2} -8

Bam!

7 0
3 years ago
I need help with this problem, if anyone could help ASAP, that would be much appreciated. In the figure below, mROP = 125° Find
netineya [11]

Answer:

see below

Step-by-step explanation:

mROP= 125°

mSOQ= mROP= 125°

mROQ=mPOS= 180°-125°= 55°

<u>Sum of measures of all arcs in the circle= 2π</u>

mRP= mQS=2π*125/360=25/36π

mQR=mPS=2π*55/360=11/36π

mPRQ= half circle= 2π/2= π

mRPQ= 2π-mQR= 2π- 11/36π= 61/36π

6 0
3 years ago
Simplify 3 times 4 minus 8 divided by 2
lisabon 2012 [21]

Answer:

2

Step-by-step explanation:

3 x 4 = 12 - 8 = 4 ÷ 2 = 2

7 0
3 years ago
This is Simple Interest 7 grade Ratio and Percent Problems
erastovalidia [21]
Formula: total = principal x (1 + (interest rate x loan time))

total = 1000 x (1 + (0.055 x 2))

total = 1000 x (1 + 0.11)

 total = 1000 x 1.11

total = $1110
8 0
3 years ago
jesse had a balance of 1200 on a credit card with an APR of 18.7% compounded monthly. About how much will he save in interest ov
igor_vitrenko [27]

Jesse saved about $85.77 in interest over the course of a year if he transfer from one credit card to another.

<h3>What is the interest accrued on savings?</h3>

The interest accrued on saving is the interest gained on saving or investment over a period of time.

ar

The amount of money saved in interest by Jesse over a period of 12 months provided that the transferred his balance to a credit card is calculated as follows:

Amount saved = \mathbf{P_x(1 + \dfrac{r}{P_x})^{12}-P_y(1 + \dfrac{r}{P_y})^{12}}

Amount saved = \mathbf{1200(1 + \dfrac{18.7}{1200})^{12} - 1200(1 + \dfrac{12.5}{1200})^{12}}

Amount saved = $85.768

Amount saved = $85.77

Learn more about interest accrued on a savings here:

brainly.com/question/1434515

#SPJ1

5 0
1 year ago
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