Geometry pls help :(

Geometry Pls Help :(

Answers

Answer 1

Answer:

900 pi for first question and 14137 for 2nd

Step-by-step explanation:

SA=4pi r^2

r=15 (30/2)

SA=4pi(15^2)

SA=900pi

V=4/3pi r^3

V=4/3(3.14)(15^3)=14137

Answer 2

Answer:

Surface area: 900π in²

Volume: 4500π in³

Step-by-step explanation:

A = 4πr² = 4π(15²) = 900π

V = 4/3 πr³ = 4/3 π(15³) = 4500π


Related Questions

A line l2 is perpendicular to the line x + 2y – 5 = 0 without computing the gradient of this
line find the equation of l2 if it passes through (3, 4)​

Answers

Answer:

y=2x-2

Step-by-step explanation:

first, let's put the line into y=mx+b form (slope-intercept form), where m is the slope (or gradient) and b is the y intercept

add 5 to both sides

x+2y=5

subtract x from both sides

2y=-x+5

divide by 2

y=-1/2x+5/2

perpendicular lines have slopes (gradients) that are negative (one is positive, another one is negative) and reciprocal (they are essentially the same number, just "flipped")

to find the slope of I2:

since -1/2 is negative, that means the slope of I2 will be 2 (2/1 is the reciprocal of 1/2 (positive version of -1/2))

so here's our equation so far:

y=2x+b

now we need to find b

because line will pass through (3,4), we can use it to solve for b

substitute 4 as y and 3 as x

4=2(3)+b

multiply

4=6+b

-2=b

therefore the equation is y=2x-2

hope this helps!!

Grace and her friends just dined at a restaurant and left a tip of
$16.93, which was equal to exactly 22% of the total bill. What
was the total bill in dollars? Round your answer to two decimal
places.

Answers

Answer:

$76.95

Step-by-step explanation:

If you reverse it the equation is 16.93 divided by .22 and you get the total which is 76.95

You can check your answer by doing 76.95 times .22 and get the tip which is 16.93

PLEASE MARK ME BRAINLIEST

In a class test, +4 marks were awarded for the correct answers and -1 mark for the wrong answers. Student scores 40 marks. If his correct answers were 11, find his wrong answers.

Answers

Step-by-step explanation:

Let y the number of wrong answers got.

[tex]11( + 4) + ( - 1)y = 40 \\ 44 - y = 40 \\ - y = - 4 \\ y = 4[/tex]

∴ He got 4 wrong answers.

find the surface area ​

Answers

Answer:

Surface area of what?

You can ask the question again but also add the pic so that we can help :)

lol find the surface of area what????? i can’t see anything

the circumference of a circle is

Answers

Answer:

Step-by-step explanation:

the formula for circumference of a circle is 2 x pi x r(radius).

Answer:

The circumference of a circle is pretty much just the perimeter of the circle Step-by-step explanation:

Ling earns $12 each time he shovels his neighbor’s driveway. He earned a total of $108 shoveling the driveway last winter. Which of the following equations could be used to find w , the number of times Ling shoveled his neighbor’s driveway last winter?

Answers

Answer:

12w=108

Step-by-step explanation:

Ling earns $12 each time he shovels his neighbor’s driveway. He earned a total of $108 shoveling the driveway last winter. Which of the following equations could be used to find w , the number of times Ling shoveled his neighbor’s driveway last winter?

Answer:

12w=180

Step-by-step explanation:

hey its me

14. A boy completes a 100 m circular track race in 5 min. Another boy runs in the same
time
completes the race in 6 minutes. If they start from the same point then after how many
will they meet at the starting point
Find the smallest 3-digit number which is exactly divisible by 5.10 and 20​

Answers

Answer:

ee

Step-by-step explanation:

Identify this shape below

Answers

This shape is called a T R I A N G U L A R
P R I S M

WILLL MARK BRAINLIEST IF GOTTEN RIGHT!!!! (CARIRDE)))) HELP GIRL!

Answers

Answer:

55°

Step-by-step explanation:

Let the centre of the circle be C

mFG=110 (It's hard to read but I assume thats what the 110 marks)

mFG=<FCG=110

Consider ΔFCG (an isosceles triangle since CF=CG=radius). Angles in a triangle add to 180 and <CFG=<CGF so <CFG=(1/2)(180-110)=(1/2)(70)=35°

<EFG+<CFG=90

<EFG+35=90

<EFG=55°

What is the simplified expression for Negative 3 c d minus d (2 c minus 4) minus 4 d?

Answers

Answer:2-3= ur answer then mutiply it by 4 then boom! hope helpsss\

Step-by-step explanation:

Help due in 45 minutes!!!

Answers

Answer:

x = 5, y = -3

Step-by-step explanation:

2x - 3y = -1 ---› Eqn. 1

-2x + y = 7 ----› Eqn. 2

Add both equations

-2y = 6

Solve for y

y = 6/-2

y = -3

Substitute y = -3 into Eqn. 1.

2x - 3(-3) = -1

2x + 9 = -1

2x + 9 - 9 = -1 - 9

2x = -10

2x/2 = -10/2

x = 5

Solution: x = 5, y = -3

1. 5(2a-b)
2.7(3x+y)-(2x -y)
3.(a+4) (a+3)
4.(5x+y) (2x+3y)
5.(m+n) (m-n)
6.(p- 2q) (p-2q)​

Answers

Answer:

1. 10a - 5b

2. 19x + 8y

3. a2 + 7a + 12

4. 10x2 + 17xy + 3y2

5. m2 - n2

6. p2 - 4pq + 4q2

hey guys i'm having a rough night and i can't figure out my homework rn i'm just too stress please help

Answers

Answer:

4a) Irrational

Step-by-step explanation:

The square root of 20 is irrational. There is no number that can multiplied by itself to equal 20.

For a better explanation, the square root of 25 is rational. 5 can be multipled two times to be equivalent to it. Meanwhile, 20 can't.


What is the area of this parallelogram?

h = 2 in.

b = 10 in

Answers

Answer:assuming it’s not a 3D object then, 2x10=20

If it is, then do the base 2x10 then times the height

Step-by-step explanation:

Nervous system escape room.

Answers

what is the nervous system escape room?

PLZ HELP I WILL MARK BRAINLIEST

Answers

Answer:

Image wont load can you explain the problem to me through comments pls?

Step-by-step explanation:

The only thing im sure of is that for the chart the first one is 2 and the second one is four but not sure about the equation
Hope it helps :)

3 units to the right of 8 answer

Answers

Answer:

11

Step-by-step explanation:

If you're at 8 and move 3 to the right in a number line, you would end up at 11.

what are the missing numbers?

Answers

Given:

The table of values of an exponential function.

To find:

The missing values in the exponential function.

Solution:

The general exponential function is defined as:

[tex]y=a(b)^x[/tex]              ...(i)

Where, a is the initial value and b is the growth factor.

First point from the given table is (1,10). It means, the equation (i) must be true for (1,10).

[tex]10=a(b)^1[/tex]             ...(ii)

Second point from the given table is (2,20). It means, the equation (i) must be true for (2,20).

[tex]20=a(b)^2[/tex]             ...(iii)

Dividing (iii) by (ii), we get

[tex]\dfrac{20}{10}=\dfrac{a(b)^2}{ab}[/tex]

[tex]2=b[/tex]

Putting [tex]b=2[/tex] in (ii), we get

[tex]10=a(2)^1[/tex]

[tex]\dfrac{10}{2}=a[/tex]

[tex]5=a[/tex]

Putting [tex]a=5,b=2[/tex] in (i), we get

[tex]y=5(2)^x[/tex]

The required exponential function for the given table of values is [tex]y=5(2)^x[/tex]. So, the missing values are 2 and x, where 2 is in the base and x is in the power.

Solve for x.
-32 > -5 +9x
Enter your answer, as an inequality, in the box.

Answers

Answer:

-3>x.

Step-by-step explanation:

I did mental math.

The posted speed limit is 45 miles per hour.
Choose all the metric measures that are faster than 45 miles
per hour.

A. 45 km per hour

B. 64.1 km per hour

C. 86.4 km per hour

D. 91 km per hour

E. 112.3 km per hour

Answers

A 45 km & B 64.1 km is the answer

WILL GIVE BRAINLIEST. SHOW WORK PLEASE

Answers

Answer:

See explanation

Step-by-step explanation:

a.   [tex]\int\limits^4_1 {(f + g)(x)} \, dx = \int\limits^4_1 {f(x)} \, dx + \int\limits^4_1 {g(x)} \, dx = 11 + 17 = 28[/tex]

b.  [tex]\int\limits^6_4 {f(x)} \, dx = \int\limits^6_1 {f(x)} \, dx - \int\limits^4_1 {f(x)} \, dx = 23 - 11 = 12[/tex]

c.  [tex]\int\limits^4_1 {3f(x)} \, dx = 3\int\limits^4_1 {f(x)} \, dx = 3(11) = 33[/tex]

d.  [tex]\int\limits^4_1 {(g(x) + 2)} \, dx = \int\limits^4_1 {g(x)} \, dx + \int\limits^4_1 \, 2dx = 17 + (8 - 2) = 17 + 6 = 23[/tex]

The radius of the planet Saturn is 945% of the radius of Earth. What is 945% expressed as a fraction and as a decimal?

PLZ HELP
(don't send link and there no photo)

Answers

Answer:

Decimal: 9.45 Fraction: 236.35/25

Step-by-step explanation:

sorry if the fraction one is wrong.

What's the probability of drawing a black card, putting the card back into the deck (replacement), and then drawing a red card? Write the whole decimal.

Answers

i dont no okay please stop


Which figure has at least one acute angle ,one obtuse angle and one right angle?​

Answers

Answer: Acute triangle has an acute angle and obtuse triangle equals an obtuse angle.

Step-by-step explanation:

B
68°
A
E
D
EB
15. What is the length of CD? (Use 3.14 for $7)
a
31.68
b
29.31
23.14
17.79

Answers

Answer:

b = 29.31

Step-by-step explanation:

Given:

m<CEB = 68°

EB = radius = 15

Required:

Length of arc CD

Solution:

Length of arc CD = θ/360 × 2πr

Where,

θ = 180° - 68° = 112° (angles on a straight line)

π = 3.14

r = radius = 15

Plug in the values

Length of arc CD = 112/360 × 2 × 3.14 × 15

= 29.3066667

≈ 29.31

If triangle ABC has the following angle measurements, what is the measure of Angle A, Angle B, and Angle C?

m\angle A=7x-12m∠A=7x−12
m\angle B=8x+20m∠B=8x+20
m\angle C=5x+8m∠C=5x+8
m∠A=

m∠B=

m∠C=

Answers

the answer for this equation is 499 + 199 equals 599

i need help !ASAP!
(screenshot below)

Answers

The answer is 30
2/3=.666
*18=12
12+18=30

Alex rolls a 6-sided dice ten times.
Here are her scores.
3 2 4 6 3 6 1 2 5 4
Work out the median of her scores.Single line text.
(2 Points)

10.Q10b. Using the data above, work out the mean of her scores.Single line text.
(2 Points)

11.Q10c. Using the data above, work out the range of her scores.Single line text.
(1 Point)

Answers

Answer:

Hello Love! The median is simply just the number in the middle so sense we have 2 numbers in the middle our median will be 3 and 6

The mean is when you add up the numebers then divide by how many numbers there are so...

3 + 2 + 4 + 6 + 3 + 6 + 1 + 2 + 5 + 4 = 36 so 36 divided by 10 is 3.6

The range is simply just the biggest number in the sequence subtracted by the smallest number so... 6 - 1 = 5 so 5 would be our range!

Hope this helps you.

A triangle has a perimeter of 74 inches. If the three sides of the triangle are n, 3n+6, and 3n−2, what is the length of each side?

Answers

Answer:

N=10

3n+6=36

3n-2=28

Step-by-step explanation:see photo

can someone help with this please its geometry :)

Answers

Answer:

Step-by-step explanation:

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