The radius of a circle with an area of 60 square centimeters is represented by the expression StartRoot StartFraction 60 Over pi EndFraction centimeters. What is another way of expressing the radius?
2 StartRoot 15 pi EndRoot
4 StartRoot 5 pi EndRoot
StartFraction 2 StartRoot 15 pi EndRoot Over pi EndFraction
StartFraction 4 StartRoot 5 pi EndRoot Over pi EndFraction

Answers

Answer 1

Answer:

C) StartFraction 2 StartRoot 15 pi EndRoot Over pi EndFraction

Step-by-step explanation:

Given circle with area of:

A = 60 cm²

Find its radius

A = πr² ⇒ A/π = r² ⇒ √(A/π) = r ⇒ r = √(A/π)

Substitute the values and find the value of r:

r = √(60/π) = 2√(15/π) = 2√(15π) / π

Now compare this with answer choices:

A) 2 StartRoot 15 pi EndRoot ⇒ 2√(15π), incorrect

B) 4 StartRoot 5 pi EndRoot ⇒ 4√(5π), incorrect

C) StartFraction 2 StartRoot 15 pi EndRoot Over pi EndFraction ⇒ 2√(15π) / π, correct

D) StartFraction 4 StartRoot 5 pi EndRoot Over pi EndFraction ⇒ 4√(5π) / π, incorrect
Answer 2

Answer:

c

Step-by-step explanation:


Related Questions

A bag contains 8 red marbles, 4 white marbles, and 5 blue marbles. You draw one marble at random. Find Pared and blue) (1 point) 40 o 17 00 o SIAMO 0​

Answers

Answer:

5/(8+4+5) = 5/17

Step-by-step explanation:

total has (8 red +4 white+5 blue)= 17

we looking for blue , so is 5.

5/17

Which equation says that the area of the picture
itself is 700 in ²?

Answers

Answer:

See below

Step-by-step explanation:

(36 - 2x) * (17-2x) = 700      I think, given the info

4x^2 - 106x + 612 = 700     expanded....

x²+8x-16 by factorising method


what is the ans pls I need it fast ASAP​

Answers

Answer:

this cannot be factored since nothing shares factorable groups/values

Step-by-step explanation:

hope this helps:)

covert this rational number to its decimal form and round to the nearest thousandth. 7/9​

Answers

Answer:

0.778 to the nearest thousandth.

Step-by-step explanation:

Dividing 7 by 9:    

9) 7.000000

   0.7777777 ....   <--    quotient

So it is 0.778 to the nearest thousandth.

A local couple is deciding to invest their lifetime savings of $68,000.00 into a Fijian business. They are considering two businesses. Business A, in the food and beverage (FNB) industry, provides an annual cash income of about $8,000 for 10 years. Business B, in the clothing and textiles industry, provides an annual cash income of $7,500 for 11 years commensurate with their level of investment. If the couple on the other hand decide to leave their lifetime savings into a fixed deposit at their current bank, which is a large international bank, they would get about 1.5 percent per annum. The economy is currently in the expansionary phase of the business cycle. However, it is forecasted that a severe global downturn is expected in 1 years’ time and the resulting recession will last about 1 year thereafter. During the recession, it is expected that cash flows in the FNB industry will fall by 40 percent per annum. In the clothing and textiles industry, it is expected that cash flows will fall by about 35 percent per annum. The general elections are expected to be held in 4 years’ time. Policy changes around taxation could be expected but at present are uncertain.
Required:
i. Calculate the present value of the cash inflows of both alternatives and compare it against the investment required. Clearly show which investment is preferred

ii. Identify and discuss the key risks faced by the couple in each scenario

iii. Against the type of risks involved, please discuss which investment would you choose

Answers

The best investment option for this couple is the Food and Beverage industry because it is the one that gives them the highest profits within 11 years compared to the other alternatives.

How to calculate the profit of the couple in each investment alternative?

To calculate the pair's gain in each alternative we must perform the following mathematical operations:

Food and beverage (FNB) industry

$8,000 × 10 years = $80,000

$8,000 ÷ 100 = $80$80 × 40% = $3,200

$80,000 - $3,200 = $76,800

$76,800 + $8,000 = $84,800

Clothing and textiles industry

$7,500 × 11 years = $82,500

$7,500 ÷ 100 = $75$75 × 35% = $2,625

$82,500 - $2,625 = $79,875

Current Bank

$68,000 ÷ 100 = $680$680 × 1.5% = $1,020

$1,020 × 11 = $11,200

$68,000 + $11,200 = $79,220

Based on the foregoing, it can be inferred that the best investment option for the couple is the Food and Beverage (FNB) industry because it is the one that leaves the highest profits despite the decrease in profits during the second year.

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find x.


An image of two parallel lines cut by a transversal. 8x-1 on top line and 3x-9 on bottom line . how do i get x

Answers

To solve this problem, we have to understand that the parallel lines cut will form two alternate angles which are equal to each other. The value of x is equal to -8/5

Alternate Angles

In the given question, we have two alternate angles fixed at opposite end to each other.

Data;

8x - 13x - 9

Since we've established that alternate angles are equal to each other, we can proceed to equate the two angles and solve for x

[tex]8x -1 = 3x - 9\\8x - 3x = - 9 + 1\\5x = - 8\\x =-\frac{-8}{5}[/tex]

The value of x is equal to -8/5

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write two equations that when graphed look like this *see image*. please help its due soon and i will give ya 75 points for answering CORRECTLY thanks, 5 stars, and brainlist. thank

Answers

The graph is showing the equation of circle x²+y²=4

What is a circle?

A circle is a two-dimensional geometry on the plane having a centre point and the circular line is drawn equidistant from the centre point.

The given graph in the question represents the equation of the circle cutting the points on the x-axis and y-axis at 4 which is the radius of the circle.

The equation will be as follows:-

x²+y²=4

Hence the graph is showing the equation of circle x²+y²=4

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A plumber fixed a leaky sink and charged $55 for parts and $45 per hour for labor. If the total bill was $190, how many hours did the plumber spend fixing the sink?

Answers

The plumber spend 3 hours to fixing the sink if the plumber fixed a leaky sink and charged $55 for parts and $45 per hour for labour.

What is a linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

Let's suppose the plumber spend x hours to fixing the sink.

Then we can frame a linear equation in one variable:

55 + 45x = 190

45x = 135

x = 3 hours

Thus, the plumber spend 3 hours to fixing the sink if the plumber fixed a leaky sink and charged $55 for parts and $45 per hour for labour.

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What is the length of a side of an equilateral triangle inscribed in a circle with a radius of 10 cm?

Answers

Answer:

a = √3 * r

a = √3 * 10

a = 10√3 cm

Step-by-step explanation:

what is the answer??

Answers

Answer:

76 unit^2

Step-by-step explanation:

Total area: (0.5  * base * height) +( length * breadth ) + (0.5 * base * height)

= (0.5 * 8 * 2) + ( 7*8) +( 0.5 * 8 * 3) = 8 + 56 + 12 = 76


PLEASE HELP?! IM SO CONFUSED!!

Answers

Answer:

C.

Step-by-step explanation:

-3 7/8 rounds down to -4

4.63 rounds up to 5

-4 x 6 + 5

-24 + 5

-19

her answer (-19.14) also rounds to -19

So yes, it is reasonable and the correct response is C.

Linda asked the students of her class their hockey scores and recorded the scores in the table shown below:

Hockey Scores


Score Number of Students
0 2
1 1
2 3
3 6
4 2
5 3
6 2


Based on the table, what is the mean hockey score?
2.7
2.9
3.2
5.2

Answers

Answer:

C) 3.2

Step-by-step explanation:

[tex]\text{Mean}=\frac{2(0)+1(1)+3(2)+6(3)+2(4)+3(5)+2(6)}{19}\approx3.2[/tex]

Answer:

2.7

Step-by-step explanation:

the hockey score is 2.7

What is the volume of this box? Cardboard box A. 15 cm3 B. 96 cm3 C. 120 cm3 D. 148 cm3

Answers

where is a picture?

what is the anwer pls

Answers

Answer:

180 square yards

Step-by-step explanation:

there are 3 shapes that create the total area :

a large right-angled triangle to the right. its baseline is 16 yd. the left side is a bit complicated, we get to it.

a small middle rectangle with length 6 yd. it's width is 3 yd.

is area is 6×3 = 18 yd²

a large rectangle at the bottom left with length 11 yd and width 6yd.

its area is 11×6 = 66 yd²

now, how long is the left side of the triangle ? we need it as the height of the triangle to get the area

baseline × height / 2

we see that a part of the left side is 8 yd.

then the width of the middle rectangle is also a part of that left side : 3 yd.

and then we notice that the triangle goes a little bit below the top length side of the large rectangle. how much ? well the actual width of the large rectangle is 6 yd, but the side under the triangle says only 5 yd. so, the missing piece is 6-5 = 1 yd.

so, the full left side is

8 + 3 + 1 = 12 yd

and the area of the triangle is

16×12 / 2 = 16×6 = 96 yd²

so, the total area of the figure is

18 + 66 + 96 = 180 yd²

Audrey is running for student council president. she estmates her chances of winning to be 1/5 chance. Which likelihood describes aubrey's estimated chances of winning?
A. Impossible
B. Unlikely
C. likely
D. Certain

Answers

Answer:

B. Unlikely

Step-by-step explanation:

Generally speaking, a probability of 0.11 to 0.40 is unlikely. 1/5 is 0.2, which falls in this range.

simply an surds
√75+ √48 -2√675

Answers

The simplification of √75+ √48 -2√675 is -21√3.

What is a surd?

Surds are irrational numbers.

To simplify the surd in the question above, we use the addition and subtraction of surds.

Addition and subtraction of surds

Two or more surds can be added or subtracted if they are in the same basic form.

E.g

a√b+c√b = (a+c)√ba√b-c√b = (a-c)√b

Using the above example,

Given:

√75+√48-2√675

Express the surds to the same basic form

5√3+4√3-(2×15)√35√3+4√3-30√39√3-30√3 = -21√3

Hence, the simplification of √75+ √48 -2√675 is -21√3.

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The graph of y = cos x is transformed to the graph below. Which statement
about the graph is not correct?
QA. There is no phase shift.
OB. The period is pi.
OC. The amplitude is 2.
O. D. The midline is y = 1.5.
EIN
5

Answers

Answer:

d)The midline is y=1.5

Step-by-step explanation:

Because you can see in the graph that the midline is 1. So only c is no correct.

The amplitude is measured between the midline and the pik(highest or lowest value) of the function. This case is 2. True

The period is the distance between “equivalent” points. pi in this case. True.

The phase shift occur when the function is shifted on the x-axis. There is no phase shift. True.

Which is the value of the 4 in 5,138.204?

Answers

Answer:

thousandths

Step-by-step explanation:

For a scavenger hunt, Jim's mom distributed a bag of 520 jelly beans evenly into 20 plastic containers and hid them around theyard. If, after the hunt, Jim has a total of 182 jelly beans, then how many of the plastic containers did he find?
A. 338
B. 140
C. 9
D. 7

Answers

D. 7
Explanation:
First divide 520 and 20 to get the answer of 26.
Then, divide 182 and 26 to get 7.
I hope this helped!

If the number under the square root radical has no perfect souare
factors, then it cannot be simplified further.
TRUE
FALSE

Answers

Answer:

true

Step-by-step explanation:

Examples :

180 = 5 × 2² × 3²

Then

The number 180 has perfect square factors which are 2 and 3

Then

The number √180 can be simplified because:

[tex]\sqrt{180} =\sqrt{5\times 2^{2}\times 3^{2}}[/tex]

        [tex]=\sqrt{5\times \left( 2\times 3\right)^{2} }[/tex]

        [tex]=\sqrt{5\times \left( 6\right)^{2} }[/tex]

        [tex]=\sqrt{5} \times \sqrt{6^{2}}[/tex]

        [tex]=6\sqrt{5}[/tex]

On the other hand :

10 = 5 × 2

Then

The number 10 has no perfect square factors

Then

The number √10 cannot be simplified because:

[tex]\sqrt{10} =\sqrt{5\times 2} =\sqrt{5} \times \sqrt{2}[/tex]

[tex]\text{and} \ \sqrt{5} \times \sqrt{2} \ \text{is not a simplified expression of} \ \sqrt{10} \ \\\text{,in fact it is more complicated than} \ \sqrt{10}[/tex]

Are the following ratios equivalent? 5 cookies: 8 glasses of milk and 7 cookies: 9 glasses of milk.

Answers

Answer:

no

Step-by-step explanation:

Can anyone solve number 20?

Answers

Answer:

X=80

Step-by-step explanation:

Angle OAB=50(Properties of isosceles traingle)

X+50+50=180(sum of the interior angles of the traingle)

X=180-100

X=80

Maths question:
5% of 40
20% of 25

Answers

5% of 40 is 2
20% of 25 is 5
Enjoy

Answer:

1. 2

2. 5

Step-by-step explanation:

1. write 5% as

[tex] \frac{5}{100} [/tex]

Then,

[tex] \frac{5}{100} \: of \: \: 40 = \frac{5}{100} \times 40[/tex]

Therefore, the answer is 2

If you are using a calculator, simply enter 5 divided by 100 times 40 which will give you 2 as the answer.

2. Write 20% as 20/100

[tex] \frac{20}{100} \: of \: 25 = \frac{20}{100} \times 25[/tex]

Therefore, the answer is 5

If you are using a calculator, simply enter 20 divided by 100 times 25 which will give you 5 as the answer.

A cylinder has a radius of 11 cm. The height
is 9 cm. What is the volume of the cylinder?

Answers

Answer:

621.72

Step-by-step explanation:

The explanation is that the formula is V=2HπR

Multiply all of that and you get your answer of 621.72

Which is in slope intercept form? Any fractions must be in simplest form.
A. 4y = -6x + 8
B. y = -6/4x+8/4
C. y = -3/2x+2
D. 6x + 4y = 8

Answers

Answer:

B and C are both in slope-intercept-form.

Step-by-step explanation:

Slope Intercept Form is --> y = mx + b, where m is the slope, and b is the y-intercept.

Both B and C have a slope (-6/4 for B, -3/2 for C) and both have a y-intercept (8/4 or 2).

I hope this helps. Please mark me brainliest!

please help asap giving brainiest and lots of points! this is an easy math/ engineering question if you dont know theres online calculators just pls help!

The initial velocity of a projectile is 57 m/sec, and the firing angle is 22°. Calculate the horizontal distance.
a 230 meters
b 330 meters
c 430 meters
d 130 meters

Answers

Answer:

a 230 metera 230 metersa 230 metersa 230 metersa 230 metersa 230 meters

please help will mark Brainliest!!​

Answers

Answer:

number 2

Step-by-step explanation:

im not that sure but i think it's that one

Q) Rewrite these newspaper headline in PERCENTAGE?
1.There was a one in two chance that the goldfish would swin to left.

Answers

Answer:

There was a 50% chance that the goldfish would swim to the left

Step-by-step explanation:

Percentage means "amount in one hundred".

[tex]\textsf{one in two}=\sf \dfrac{1}{2}=\sf \dfrac{1\times 50}{2 \times 50}=\dfrac{50}{100}=50\%[/tex]

Newspaper headline:

There was a 50% chance that the goldfish would swim to the left.

A ladder 20 m long rests against a vertical wall so that the foot of the ladder is 9 m from the wall. a Find, correct to the nearest degree, the angle that the ladder makes with the wall. b Find, correct to 1 d.p., the height above the ground at which the upper end of the ladder touches the wall.​

Answers

Answer:

(a) 27°

(b) 17.9m

Step-by-step explanation:

According to the attachment

let AB be the ladder

BC be the distance between the ladder and wall

(a) We have to find ∠A by trigonometry formula

[tex] \sf \sin A = \frac{perpendicular}{hypotenuse} [/tex]

Here angle A is facing BC so it is perpendicular

and AB is the longest side so it is hypotenuse

[tex] \sf \implies \sin A = \frac{BC}{AB} \\ \\ \\ \sf \implies \sin A = \frac{9}{20} \\ \\ \\ \sf \implies \sin A = 0.45 \\ \\ \\ \sf \implies \sin A = \sin27{ \degree} \\ \\ \\ \sf \purple {A = 27{ \degree}}[/tex]

(b)

AC is the distance from the upper end of the ladder to ground

we will find it by Pythagoras theorem

[tex] \sf {hypotenuse}^{2} = {perpendicular}^{2} + {base}^{2} \\ \\ \\ \sf \implies {AB}^{2} = {BC}^{2} + {AC}^{2} \\ \\ \\ \sf \implies {20}^{2} = {9}^{2} + {AC}^{2} \\ \\ \\ \sf \implies 400 = 81 + {AC}^{2} \\ \\ \\ \sf \implies 400 - 81 = {AC}^{2} \\ \\ \\ \sf \implies 319 = {AC}^{2} \\ \\ \\ \sf \implies \sqrt{319} = AC \\ \\ \\ \sf \blue{\implies 17.86 = AC}[/tex]

From the triangle, find the missing length

Answers

I don’t see the triangle
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