Can anybody answer these please hurry
Find the formula
Plug in values
Volume
Answer:
See explanations below
Step-by-step explanation:
Volume of the sphere is expressed as;
V = 4/3πr³
r is the radius
V = 4/3 * 3.14 * 3³
V = 4/3 * 3.14 * 27
V = 4 * 3.14 * 9
V = 113.04cube units
For the secind sphere;
diameter = 12
radius = 12/2 = 6
V = 4/3πr³
r is the radius
V = 4/3 * 3.14 * 6³
V = 4/3 * 3.14 * 216
V = 4 * 3.14 * 72
V = 904.32cube units
Working together, Beth and Katy can wash a car in 6 minutes. Had she done it by herself, it would have taken Katy 18 minutes. How long would it take Beth to wash the car herself?
Answer:
It would take Beth twelve minutes to wash the car herself
Step-by-step explanation:
If they do it together in 6 minutes.
& Katy can do it in 18 minutes alone
Then 18 - x = 6
replace x for twelve
18 - twelve = 6
Ans: twelve
A sequence can be generated by using an = 4a(n - 1)) where a= 6 and n is a whole
number greater than 1. What are the first four terms in the sequence?
Given:
The sequence can be generated by
[tex]a_n=4a_{(n - 1)}[/tex]
Where [tex]a_1= 6[/tex] and [tex]n[/tex] is a whole number greater than 1.
To find:
The first four terms of the given sequence.
Solution:
We have,
[tex]a_n=4a_{(n - 1)}[/tex] ...(i)
It is given that [tex]a_1= 6[/tex]. So, for [tex]n=2[/tex], we get
[tex]a_2=4a_{(2 - 1)}[/tex]
[tex]a_2=4a_1[/tex]
[tex]a_2=4(6)[/tex]
[tex]a_2=24[/tex]
Putting [tex]n=3[/tex] in (i), we get
[tex]a_3=4a_{(3- 1)}[/tex]
[tex]a_3=4a_2[/tex]
[tex]a_3=4(24)[/tex]
[tex]a_3=96[/tex]
Putting [tex]n=4[/tex] in (i), we get
[tex]a_4=4a_{(4- 1)}[/tex]
[tex]a_4=4a_3[/tex]
[tex]a_4=4(96)[/tex]
[tex]a_4=384[/tex]
The first four terms of the given sequence are 6, 24, 96,384.
Therefore, the correct option is C.
Find the missing side.
Round to the nearest tenth.
For all 4 pics
Answer:
1st pic) 17.8
2nd pic) 16.8
3rd pic) 9.1
4th pic) 13.5
Step-by-step explanation:
1st pic: [tex]cos = \frac{adjacent}{hypothenuse}[/tex]
(write equation) Cos 27 (cos 27 = 0.89) = [tex]\frac{x}{20}[/tex]
(new equation) 0. 89 = [tex]\frac{x}{20}[/tex]
(multiply 20 on both sides) 0.89 x 20 = [tex]\frac{x}{20}[/tex] x 20
(solve) 17.8 = x
2nd pic: [tex]tan = \frac{adjacentx}{hypothenuse}[/tex]
(write equation) tan 40 (tan 40 = 0.84) = [tex]\frac{32}{x}[/tex]
(new equation) 0.84 = [tex]\frac{32}{x}[/tex]
(multiply 32 on both sides) 0.84 x 20 = [tex]\frac{32}{x}[/tex] x 20
(solve) 16.8 = x
3rd pic: [tex]cos = \frac{adjacent}{hypothenuse}[/tex]
(write equation) cos 55 (cos 55 = 0.57) = [tex]\frac{16}{x}[/tex]
(new equation) 0.57 = [tex]\frac{16}{x}[/tex]
(multiply 16 on both sides) 0.57 x 16 = [tex]\frac{16}{x}[/tex] x 16
(solve) 9.1 = x
4th pic: [tex]tan = \frac{adjacentx}{hypothenuse}[/tex]
(write eqaution) tan 42 (tan 42 = 0.90) = [tex]\frac{x}{15}[/tex]
(new equation) 0.90 = [tex]\frac{x}{15}[/tex]
(multiply 15 on both sides) 0.90 x 15 = [tex]\frac{x}{15}[/tex] x 15
(solve) 13.5 = x
Need HELP Will mark brainliest!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
This is really hard, but what you marked is CORRECT, it is the second option :D
Mark brainliest please ;P
Please help will give brainliest
Answer: this will help
Step-by-step explanation: AB = DE
BC = EF
CA = FD
Angle A = Angle D
Angle B = Angle E
Angle C = Angle F
The price of an oven was increased by 20% to £156.
What was the price before the increase?
Answer:
Step-by-step explanation:
Before the increase it was 100%
So 20+100=120
156/120*100=130$
Don’t do it like 20/100 *156 and then minus it from 156 because you will get a wrong answer
(This was answered by another person on a another question.)
Answer:
130
Step-by-step explanation:
x * 1.2 = 156
x = 156/1.2
x = 130
the straight line L, has equation y=3x-4 The straight line 1, in perpendicular to L, and passes through the point (9.5) Find an equation of line L
Given:
The equation of given line is
[tex]y=3x-4[/tex]
A line is perpendicular to the given line and passes through the point (9,5).
To find:
The equation of the perpendicular line.
Solution:
We have,
[tex]y=3x-4[/tex]
On comparing this equation with slope intercept form [tex]y=mx+b[/tex], we get
[tex]m=3[/tex]
It means, the slope of the given line is 3.
The product of slopes of two perpendicular lines is -1.
[tex]m\times m_1=-1[/tex]
[tex]3\times m_1=-1[/tex]
[tex]m_1=-\dfrac{1}{3}[/tex]
Point slope form of a line is
[tex]y-y_1=m(x-x_1)[/tex]
Where, m is the slope.
The slope of perpendicular line is [tex]-\dfrac{1}{3}[/tex] and it passes through the point (9,5). So the equation of the line is
[tex]y-5=-\dfrac{1}{3}(x-9)[/tex]
[tex]y-5=-\dfrac{1}{3}(x)-\dfrac{1}{3}(-9)[/tex]
[tex]y-5=-\dfrac{1}{3}x+3[/tex]
Adding 5 on both sides, we get
[tex]y-5+5=-\dfrac{1}{3}x+3+5[/tex]
[tex]y=-\dfrac{1}{3}x+8[/tex]
Therefore, the equation of required line is [tex]y=-\dfrac{1}{3}x+8[/tex].
GUYS PLEASE HELP ASAP!!!!!!! A car is driving 18 meters per second. It then merges on to a highway and accelerates at a rate of 6 meters per second per second for 2.0 seconds. It then remains at this speed. What is the speed of the car on the highway?
a. 3.0 m/s
b. 12.0 m/s
c. 26.0 m/s
d. 30 m/s
Answer:
it is going to be B. 10 m/s
The speed of the car on the highway will be 30 m/s
What is acceleration?The rate at which velocity changes with time, in terms of both speed and direction.
Given that, a car is driving 18 meters per second. It then merges on to a highway and accelerates at a rate of 6 meters per second for 2.0 seconds.
Using first equation of motion,
v = u + at where, v is final velocity, u is initial velocity, a is acceleration and t is time,
v = 18 + 6*2
v = 18 + 12
v = 30
Hence, speed of the car on the highway will be 30 m/s
For more references on acceleration, click;
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ASAP ANYONE HELP!!!!!
Answer:
C
Step-by-step explanation:
x + 6 not hard
Answer:
Is C friend
Step-by-step explanation:
The expression that represents 6 more than x is x + 6. You can also rewrite this as 6 + x, but there is no need.
HELP ME PlEASE! I am STRUGGLING??
if it takes hodshi walks 10 meters in 3 seconds how long will it take to walk 100 meters
Answer:
30 seconds
Step-by-step explanation:
10x10=100 3x10=30
Viola drives 2 kilometers up a hill that makes an angle of 4 degrees with the horizontal. To the nearest tenth of a kilometer, what horizontal distance has she covered
Answer:
2.0 km
Step-by-step explanation:
From the diagram attached,
cosθ = adjacent/Hypotenus
cos4° = x/2
make x the subject of the equation
x = 2cos4°
x = 2(0.998)
x = 1.995
x = 2.0 km. (to the nearest tenth)
Hence the horizontal distance is 2.0 km
Solve the equation. You may find using algebra tiles to be helpful. 2a − 2 = −4 a =
Answer:
2a - 2 = -4a
2a - 2a - 2 = -4a - 2a
-2 = -6a
-2/-6 = -6a/-6
1/3 = a
Step-by-step explanation:
Find the value of x. Round to the
nearest tenth.
40°
х
7
x =
Answer:
x ≈ 10.9
Step-by-step explanation:
Using the sine ratio in the right triangle
sin40° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{7}{x}[/tex] ( multiply both sides by x )
x × sin40° = 7 ( divide both sides by sin40° )
x = [tex]\frac{7}{sin40}[/tex] ≈ 10.9 ( to the nearest tenth )
I need the answer fast!! Thanks
An 8 metre long ramp reaches a vertical height of 3 feet. What angle does it make with the ground. Convert 8 metres to feet and solve for the angle using trignometric ratios. The answer gets Brainliest:)
Answer:
The Answer is 22.024
Step-by-step explanation:
Pretty sure its 22.024, sorry if i'm wrong
Have a nice day
Can please give me the answer for this?
Answer:
Least : Orange, red, yellow, purple, green : Greatest
O = 7.2
R= 7.5
Y= 7.875
P= 8.25
G= 8.33
Step-by-step explanation:
either convert them all to fractions, or convert them all to decimals
IM VERY SORRY if its wrong tho :(
I need help on 1, 2, an 3
Answer: 1. A) 2/5 B) X= -5 Y= 2
2. A) -3/2 B) X= 2 Y= 3
3. A) -2/3 B) X= -3 Y= -2
Step-by-step explanation: A) Look where the line intersects perfectly through a corner of one of the boxes, find the next one closes to that count how many it goes up and how many across. Rise/Run so the amount it goes up goes on the top of the fraction and the amount across on the bottom of the fraction.
B) This is where the line intersects the X and Y axis
Help I will be marking brainliest!!!
A. 109°
B. 34.5°
C. 62.5°
D. 69°
Show work, if possible. Thanks❤️
Answer:
Angle k is 34.5 degrees
Step-by-step explanation:
a circle makes 360 degrees total. okay so u have to consider the angles given. m arc go= 127
m<0 = 54.5
54.5 times 2 = 109
109 is arc gk
109 + 127+ 55= 291
360-291=69= arc OU
69 divided by 2 is 34.5
Angle k is 34.5 degrees
PLEASE HELPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!! How many holes need to be drilled for 36 parts? Show your work.
Answer:
18c
= 18(36)
=648
Hope this helps you
Answer:
Part H
How many holes need to be drilled for 36 parts? Show your work.
Step-by-step explanation:
18c
= 18(36)
= 648
A pet turtle walks towards his food dish at a constant speed in a straight line . His Distance in inches y from his food dish after X seconds is given by Y=3x+12 in the equation y=3x+12 interpret the meaning of the coefficients 3 and the meaning of the number 12
help me pls
Answer:
3.45677
Step-by-step explanation:
The number 3 represents the speed of the pet turtle. And the number 12 represents the distance already covered at t = 0.
What is speed?Speed is defined as the length traveled by a particle or entity in an hour. It is a scale parameter. It is the ratio of length to duration.
We know that the speed formula
Speed = Distance/Time
A pet turtle strolls towards his food dish at a consistent speed in an orderly fashion. His Distance in inches y from his food dish after X seconds is given by y = 3x + 12.
In the equation, the number 3 represents the speed of the pet turtle. And the number 12 represents the distance already covered at t = 0.
More about the speed link is given below.
https://brainly.com/question/7359669
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PLEASE I NEED HELP NOW!!!!
Answer:
80
Step-by-step explanation:
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i need help asap! math problem
Answer:
second optoin
Step-by-step explanation:
Will give brainliest, 15 points!
Danielle is keeping track of the amount of money in her lunch account. She starts with $36 in the account and uses 3 dollars every day for lunch. Which equation below could she use to track the amount of money in her account if M=the money in her account and d=the number of days?
M = 36 + 3d
M = - 3d + 36
M = - 36 + 3d
M = 3 + 36d
Answer:
M=-3d+36
Thank you! I hope you have fun in math, although personally I hate it.
Answer my question. If your answer is a link or not true It will be removed.
Pyramid a has a lateral edge of 10 and a height of 8. Pyramid B has a lateral edges of length 15 and height 12. Both A and B are regular square pyramids. What is the ratio of the lateral areas of the pyramids?
Answer:
Pyramid A had a lateral area of 100 and Pyramid B has a Lateral area of 225
so 100:225 or 4:9, due to the fact that both have square bases just muliply the lateral edge by itself
Step-by-step explanation:
Solve for X
WILL GUVE BRAINIEST ON THE FIRST ANSWER
15POINTS
Answer:
x = 10
Step-by-step explanation:
Angles are congruent because they are vertical angles:
5x + 6 = x + 46
5x - x = 46 - 6
4x = 40
x = 10
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation. Using this equation, find the maximum height reached by the rocket, to the nearest tenth of a foot. Show work. y=-16x^2+200x+82
Answer:
Step-by-step explanation:
y=-16x^2+200x+82
Answer:
my answer is 707
Step-by-step explanation:
Delta math told me lol
In the fifth grade at Lenape Elementary School, there are
3/4
as many girls as there are boys. There are 63 students in the fifth grade. How many students are girls?
Answer:
47 girls
Step-by-step explanation:
63÷4=15.75
15.75×3=47.25