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What is the volume of this cone?
38 cm
20 cm
Answer:
Volume =
1 πr2h
3
=
1 ×π×382×20
3
= 30243.065278558 centimeters3
rounded the answer is A
Step-by-step explanation:
Pls help 7th grade math
Answer:
Roberto can buy up to 7 video games max.
Step-by-step explanation:
max Roberto can spend = $200
video game = $25.50 each
equation:
25.50g = 200
divide each side by 25.50:
[tex]\frac{25.50g}{25.50} = \frac{200}{25.50}[/tex]
= 7.84
7 video games x 25.50 each = 178.50
200 - 178.50 = 21.50 remaining
The surface area of the prism is.
Answer:
300 yd²
Step-by-step explanation:
In such 2d-situation,
Observing the figure we say there are 3 rectangles and 2 unique triangle.
Area of rectangle = length x breadth
Ar. of 1st tilted(front) rec. = 12 x 5 = 60 yd²
Ar. of 2nd tilted(back) rec.= 12 x 8= 96 yd²
Ar. of the base rec. = 9 x 12 = 108 yd²
Area of each triangle = ½ x 4 x 9 = 18 yd²
Total surface area = 60 + 96 + 108 + 18 + 18 = 300 yd²
Cassie has 30 marbles. Abdul has m marbles. If Cassie has 10 times as many
marbles as Abdul, write an equation that shows how many marbles Abdul has.
Answer:
30=10m
m=3
Step-by-step explanation:
On the other side should be an expression representing how many marbles Cassie has in terms of the number of marbles that Abdul has. Abdul has m marbles, and Cassie has ten times that many. Wouldn't that be 10m? That should be placed on the right-hand side of the equation. From there, it should be fairly simple to solve for m.
Hope this helps!!
Simplify by combining like terms and then FACTOR the expression -3+5y+5+3y by picking any fraction less that is not a whole number as the factor outside the parentheses while remaining equivalent.
Answer:
8y + 2
Step-by-step explanation:
Hope this helps (^-^)
if F(x)=2x^2-x, find f(-3).
Answer:
F(-3)=2(-3)^2-(-3)
=2(9)+3
=18+3
=21
Step-by-step explanation:
5. I ran 1 miles and a half at 6 mph. How long did it take ?
Answer:
15 minutes
Step-by-step explanation:
Scenario 1: Which states would get you to 270 the fastest?
List the states and the number of votes you used in this scenario
Answer:
can you turn the picture over please so I can be able to read it
On a test, you earn 92% of the possible points by correctly answering 6 five-point questions and 8 two-point questions. How many points $p$ is the test worth?
The test is worth p= points.
Step-by-step explanation:
(6×5)+(8×2)=46
92℅=46points
100℅=x
criss cross
92℅x=46
92℅. 92℅
and this is the answer
Answer:
50 Points Total
Step-by-step explanation:
You only got 92% right on the test to that means you missed some questions. So 6x5=30, 18x2=16, 16=30=46 100%-92%=8%, 8%=4 points.
Can someone help please ? Thanks I’m advance
Answer:
f(-3) = 16
Step-by-step explanation:
Given:
f(x) = 2x² + x + 1
Required:
f(-3)
Solution:
Substitute x = -3 into f(x) = 2x² + x + 1
f(-3) = 2(-3)² + (-3) + 1
f(-3) = 2*9 - 3 + 1
f(-3) = 18 - 3 + 1
f(-3) = 16
Write the standard form of the equation of the circle described below. center(2,-6) and radius=8
Center: (2,-6)
Radius: 8
...
(x - 2)² + (y + 6)² = 64
Help please!! try to explain if you can !!
Answer:
angle 1 and 4 are vertical angles
angle 1 plus angle 2 = angle 4
angle 2 and angle 7 are all of the above
Step-by-step explanation:
1. complementary angles are angles that have a sum of 90. because the angles are vertical angles they are congruent so the angles are likely not going to equal 45 degrees
vertical angles are angles that are vertically aligned with each other
adjacent angles are angles that share a common vertex, because these angles are not right next to each other they do not share a common vertex hence they are not adjacent angles
2. The answer choice shows the proof that an exterior angle is equal to the sum of its opposite interior angles
angle 4 being the opposite angle and angles 1 and 2 being opposite interior angles
3 The image shown is an example of corresponding angles
From looking at the image and then looking at the question we can tell that angles 2 and 7 are corresponding angles
Corresponding angles are congruent
Angles 2 and 7 are also obtuse angles. We know this because the angle formed is larger than a right angle
Answer:
1 &4 are vertically opposite angle
angle 1+angle 2=angle 4 exterior angle of the triangle is equal to the sum of two opposite interior angle
angle 2 and angle 7 are corresponding angle
Determine whether 3y = −7x + 8 is quadratic or not. Explain.
Yes, it is Quadratic.
D. Yes; it can be rewritten in the form y = ax2 + bx + c.
There is no b, so you would skip over it
3y = -7x + 8
isolate the y (divide 3 from both sides)
(3y)/3 = (-7x + 8)/3
y = (-7x + 8)/3 would be your answer
D. Yes; it can be rewritten in the form y = ax2 + bx + c. (is actual answer)
hope this helps
What is the equation of the circle with center (-1, 8) and radius 1?
(x + 1)2 +(y - 3)2 = 1
(x - 1)2 + (y - 3)2 = 1
(x - 1)2 + (y + 8)2 = 2
Answer:
(x+1)² + (y−8)² = 1
Step-by-step explanation:
I hope I helped, and I always appreciate brainliest!!! :)
The dot plot shows the wing lengths in millimeters for ten birds.
wing length of birds
. . (...) . . : .
46 47 48 49 50 51 52 53 54
wing length (milliliters)
Which statement is supported by the data in the dot plot?
A. More than half of the birds have wing lengths of less than 50 millimeters.
B. There are more birds that have a wing length of 54 millimeters than birds that have a wing length of 46 millimeters.
C. Fewer than half of the birds have wing lengths greater than 48 millimeters.
D. There are more birds that have a wing length of 52 millimeters than birds that have a wing length of 51 millimeters.
Answer:
More than half the birds have wings length of less than 50 millimeters
Step-by-step explanation:
Trust me.
Answer:
More than half the birds have wings length of less than 50 millimeters
Step-by-step explanation:
camile mowed lawns for 3 hours and earned $6.80 per hour.then ahe wates windows for 2 hours and earns $6.20 per hour.what were camila's average earnings per hour for all 5 hours?
Answer:
3 hours times 6.80= 20.40
2 hours times 6.20= 12.40
20.40 + 12.40 = 32.80
32.80 ÷ the 5 hours= $6.56 per hour average
You can measure
the width of the lake using a surveying technique, as
shown in the diagram. Find the width of the lake, WX.
Justify your answer.
Please help
Answer:
78
Step-by-step explanation:
Remark
There are two similar triangles in the diagram: ΔYZX and ΔVWX.
That being true a ratio can be set up as
VW / ZY = WX / XZ
Givens
VW = 104
ZY = 8
WX = ?
XZ = 6
Solution
104 / 8 = WX / 6
104 * 6 / 8 = WX
WX = 78
So the width of the lake is 78 meters
help please. giving brainliest
The probability that a person fails to meet CDC Physical Activity Guidelines for both aerobic and muscle-strengthening activity is 0.77. The probability that a person eats a poor diet based on the American Heart Association healthy diet score is.48. The probability that a person fails to meet the Physical Activity Guidelines and eats a poor diet is.42.
a. What is the probability that a randomly selected person fails to meet the activity guidelines or eats a poor diet?
b. Find the probability that a randomly selected person is leading a healthy lifestyle. That is, they meet the Physical Activity Guidelines and eat a diet that is not poor. Include a Venn diagram in your response.
c. If you randomly select 4 people, what is the probability that they all eat a poor diet assuming independence?
d. If you randomly select 3 people, what is the probability that the first one meets the Physical Activity Guidelines and the last two do not?
Answer:
a) the probability that a randomly selected person fails to meet the activity guidelines or eats a poor diet is 0.83
b) the probability that a randomly selected person is leading a healthy lifestyle is 0.17
c) the probability that they all 4 people eat a poor diet assuming independence is 0.05308
d) the probability that the first one meets the Physical Activity Guidelines and the last two do not is 0.1364
Step-by-step explanation:
Given the data in the question;
Let E represent the events
E1 = P( person fails to meet CDC Physical Activity Guidelines ) = 0.77
E2 = P( person eats a poor diet ) = 0.48
E3 = P(E1 ∩ E2) = P( both ) = 42
a) What is the probability that a randomly selected person fails to meet the activity guidelines or eats a poor diet?
the probability that a person eats a poor diet or fails to meet the activity guidelines will be;
P( E1 ∪ E2 ) = P(E1) + P(E2) - P(E1 ∩ E2)
so we substitute
P( E1 ∪ E2 ) = 0.77 + 0.48 - 0.42 = 0.83
Therefore, the probability that a randomly selected person fails to meet the activity guidelines or eats a poor diet is 0.83
b) Find the probability that a randomly selected person is leading a healthy lifestyle. That is, they meet the Physical Activity Guidelines and eat a diet that is not poor?
In the light of De-Morgan’s Laws
P( [tex]E_1^c[/tex] ∩ [tex]E_2^c[/tex] ) = 1 - P( E1 ∪ E2 )
so
P( [tex]E_1^c[/tex] ∩ [tex]E_2^c[/tex] ) = 1 - 0.83 = 0.17
Therefore, the probability that a randomly selected person is leading a healthy lifestyle is 0.17
c) If you randomly select 4 people, what is the probability that they all eat a poor diet assuming independence?
if we select 4 people;
E2 = P( person eats a poor diet ) = 0.48
so
P = ( 0.48 )⁴ = 0.05308
Therefore, the probability that they all 4 people eat a poor diet assuming independence is 0.05308
d) If you randomly select 3 people, what is the probability that the first one meets the Physical Activity Guidelines and the last two do not?
we select 3 people;
P( person fails to meet CDC Physical Activity Guidelines ) = 0.77
P( person meet CDC Physical Activity Guidelines ) = 1 - 0.77 = 0.23
so
P = 0.23 × ( 0.77)²
P = 0.1364
Therefore, the probability that the first one meets the Physical Activity Guidelines and the last two do not is 0.1364
kate has a piece of ribbon one metre long. she cuts off 30 centimetres. how many centimetres of ribbon solve it
Answer:
70 centimeters.
1 meter = 100 centimeters
--> 100-30=70 centimeters.
Answer:
There are 100 cm in 1 m.
So with that, if you put 4.5 m in cm you get 450 cm of ribbon.
Then divide 450 by 4.5 to see how many times you can take out 4.5 cm from the amount you have.
450/4.5 = 100
So you can get 100 pices of ribbon each 4.5 cm
from 4.5 m of ribbon
Find the area of a quarter of a
circle (radius = 6)
9514 1404 393
Answer:
9π ≈ 28.27 square units
Step-by-step explanation:
The formula for the area of a circle is ...
A = πr² . . . . . radius r
For a radius of 6 units, the area is ...
A = π·6² = 36π . . . . . square units
The area of a quarter-circle is 1/4 of this:
quarter-circle area = (1/4)(36π) = 9π ≈ 28.27 . . . square units
Jillian bought 2 3/4 pounds of flour. Victoria bought 1 1/2 times as much as Jillian. How many pounds of flour did Victoria buy?
Answer: 4.125
Step-by-step explanation:
2+3/4= 2.75
2.75•1.5= 4.125
Choose property of addition that justifies the equation.
•6 + (-6) = 0
•y = y + 0
•7 + 6 = 6 + 7
FOR 100 POINTS
Match each equation to a step that will help solve the equation for x.
Answer: a: divide by 3 on both sides
B: add 3 to both sides
C: multiply by -3 on both sides
D: divide by -3 on both sides
E: add 1/3 to both sides
F: subtract 3 from both sides
G: multiply by 3 on both sides
H: subtract 1/3 from both sides.
Step-by-step explanation:
find two square roots of 49
Answer:
its 7.
Step-by-step explanation:
7 x 7 = 49
simple
7. One half of a cantaloupe was shared
equally among 3 people. What fraction
of the whole cantaloupe did each
person get? Explain how you found
your answer.
Answer:
⅙
Step-by-step explanation:
½ divided by 3 would be ⅙
i need this answer hurry ???
Answer:
240
Step-by-step explanation:
Answer:
x = 16
Step-by-step explanation:
Use Pythagorean Theorem [tex]20^{2} = 12^{2} +x^{2}[/tex]
Solve for x and you get 16.
Ms.Johnson wants to buy donuts for her science class, she wants to buy 8 glazed donuts, 12 chocolate donuts, and 16 jelly donuts. What is the ratio of the number of glazed donuts to the total number of donuts?
Answer:
8/36
Step-by-step explanation:
Y=-2x+2 this is a graphical problem
Answer:
are you problem
Step-by-step explanation:
step mater
hi everyone good morning i need help
what is 2/10 / 45
Answer:
9Step-by-step explanation:
The right answer is 9.2/10/45 = 2/10×45 = 9.