You want to estimate the number of students in your school who support extra funding for the music club. You survey every second student who enters the school.
Determine whether the sample is biased or unbiased.
Answer: It’s UNBIASED!
Step-by-step explanation:
Which number is the additive inverse of 47? Hi. SI56 -47 1 W om 04
Answer:
4 [tex]\frac{1}{4}[/tex]
Step-by-step explanation:
The additive inverse is the value that must be added to the number to give zero.
- 4 [tex]\frac{1}{4}[/tex] + 4 [tex]\frac{1}{4}[/tex] = 0
↑ additive inverse
The volume of a cylinder is 117.1 cubic feet, and its height is 15 ft. Find the diameter of the base of the cylinder.
Answer:
3.15 ft
Step-by-step explanation:
V
Volume of a cylinder: πr²h. Solving for r², we get r² = ---------
πh
Here, we get r² = (117.1 ft³) / (3.14·15 ft) = 2.48 ft² and r = √(2.48 ft²), or
1.58 ft, so that the diameter is 2r, or 3.15 ft
The diameter of the base of the cylinder is 3.15 ft.
Ashley average is a 85, but she forgets to do her finals. Which is the 20% of her grade. What is her final average now?
Answer:
Her final average now is 68.
Step-by-step explanation:
In order to find the grade average, you have to multiply each item for its percentage and add the results. Since the statement indicates that the final is 20% of the grade and she forgot to do it, that means that she got 0 for that 20%. Also, we can say that the average she has of 85 represents 80% of her grade and you have to multiply the average for the percentage:
85*0.8= 68
According to this, the answer is that her final average now is 68.
how can I give brainliest?
Answer:
when two people answer ur question, a crown will appear.
Step-by-step explanation:
Answer:
give meaning full answers
find the height of the 6 -story building
Answer:
60 to 90 feet tall
Step-by-step explanation:
i just looked it up
40. A triangle is placed inside of a circle of radius 3x. The base of the
triangle is 2x and the height is x
a. Find the area of the circle not covered by the triangle.
b. Find the area when x =
4 in.
Answer:
P=a+b+c. To find the area of a triangle, we need to know its base and height. ... Name. Choose a variable to represent it. Let x= the measure of the angle. Step 4.
Step-by-step explanation:
Which quadrant of the coordinate plane has ordered pairs in the form of a positive number
and a negative number, (+,-)?
Y у
quadrant IV
10
-9
quadrant III
8
7
6
Quadrant
quadrant 11
Quadrant
II
5
4
quadrant 1
2
- 1
2
-Z
3
5
6
7
8
9
-10-9-8-7-6-5-4-3
10
-1 0
-1
-2
-3
-4
-5
Quadrant
III
Quadrant
IV
-6
-7
-8
-9
-10
Answer:
Quadrant IV
Step-by-step explanation:
On the graph, the x-axis numbers are positive and the y-axis numbers are negative
Callie uses leather cord to make necklaces. She has a piece of leather cord that has a length of 4 yards. Each necklace will have a length of 28 inches. How many necklaces can Callie make?
A. 32
B. 24
C. 4
D. 5
Write 3 expressions that can be used to find angle C.
Answer:
[tex]sin^{-1}(x) = \frac{55}{73} \\\\cos^{-1}(x) = \frac{48}{73} \\\\tan^{-1}(x) = \frac{48}{55}[/tex]
Step-by-step explanation:
Since you're finding the angle, you use the inverse of sin, cos, and tan.
Calculate the average of the numbers shown. 23.8, 12.1 ,-17.6, 31.3
A)12.4
B)12.8
C)13.4
D)13.8
Answer:A.
Step-by-step explanation:
add the numbers together
23.8 + 12.1 + -17.6+ 31.3 = 49.6
then divide by number of numbers(4)
49.6/4=12.4
Peter has an average daily balance on his credit card of $127.50. His credit card charges 14.99% annual interest. What will his monthly finance charge be
Answer:
$1.59
Step-by-step explanation:
monthly finance charge = average daily balance x monthly interest
monthly interest = 14,99% / 12 = 1.249%
1.249% x $127.50 = $1.59
whats 10.50x +64=300
Answer:
74.5
Step-by-step explanation:
What is the total percent of a pie or circle graph
Answer:
100%
Step-by-step explanation:
TRUE OR FALSE (answer these two questions)
800 is a compatible number that is close to 704
Spencer should add compatible numbers to fund the estimate. (The number is 704)
Which number line shows the solution to a +1 <5?
+
17
+
18
13 14
15
16
19
+
1
-2 -1
0
1
2
+
14
13
15
16
17
18
19
-2.
0
1
2
3
4
Answer:
6 bghyjy UC Houston post Getty photo Getty hide and the new Yorker
Find the lateral area of the cone to the nearest whole
number.
Answer:
lateral area = pi x radius x slant height
slant height = 40^2 + 30^2 = 1600 + 900= [tex]\sqrt{2500}[/tex] = 50
3.14 x 30 x 50 = 4710m^3
Hope that answers your question
Don't hesitate to leave a comment if you are confused about something
Step-by-step explanation:
A cube has edge lengths of 11 ft. What is the volume of the cube?
Answer:
1331 ft³
Step-by-step explanation:
The volume of a cube = (edge length)³
From the above question,
Edge length = 11 ft
The volume of the cube = (11 ft)³
= (11 ft × 11 ft × 11 ft)
= 1331 ft³
The volume of the cube = 1331 ft³
The grocery store has 19.2 pounds of rice. If the rice is divided equally into 8 bags, how many pounds of rice will be in each bag?
Answer:
2.4 pounds
Step-by-step explanation:
19.2 pounds÷ 8 bags= 2.4 pounds per bag
Aghhh Please help I'm confused
Answer:
59 degrees is the answerr
Step-by-step explanation:
how do i factor this trinomial 5y^2 — 7y — 6
Answer:
(5y+3) x (y-2)
Step-by-step explanation:
5y^2-7y-6
5y^2+3y-10y-6
y(5y+3(-2(5y+3)
(5y+3) x (y-2)
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
Find the area of oC. Round your answer to the nearest hundredth,
Answer:
Area ≈ 314.16 square inches
Step-by-step explanation:
Radius of circle (r) = ½(20) = 10 in.
Formula for area of circle, A = πr²
Plug in the value into the formula
Area = π × 10²
Area = π × 100
Area = 314.159265
Area = 314.16 in.² (nearest hundredth)
PLZ HELP!!!!!
Calculate x
Answer:
x = 31
Step-by-step explanation:
The two triangles are similar, so [tex]\triangle{NPO} \sim \triangle{YZO}[/tex].
Vertex N matches up with vertex Y.
Vertex P matches up with vertex Z.
Vertex[tex]\frac{NO}{YO}=\frac{1}{4}\\\\\frac{x}{124}=\frac{1}{4}\\\\4x=124\\\\x=31[/tex] O matches up with itself.
Corresponding sides are in proportion. To find the proportion between the two triangles, you use known sides from each.
[tex]\frac{NP}{YZ}=\frac{23}{92}=\frac{1}{4}[/tex] meaning the small triangle is 1/4 the size of the large one.
To find x , notice that it is side NO which corresponds to side YO from the large triangle.
A culture of 100 bacteria grows at a continuous rate of 20%. Two hours later. 60 of the same type of bacteria are placed in a culture that allows a 30% growth rate. After how many hours do both cultures have the same population? Explain your answer.
Answer:
Both cultures will have the same population after 11 hours.
Step-by-step explanation:
Exponential equation for population growth:
The exponential equation for population growth is given by:
[tex]P(t) = P(0)(1+r)^t[/tex]
In which P(0) is the initial population and r is the growth rate, as a decimal.
A culture of 100 bacteria grows at a continuous rate of 20%.
This means that [tex]P(0) = 100, r = 0.2[/tex]. So
[tex]P(t) = P(0)(1+r)^t[/tex]
[tex]P_{1}(t) = 100(1+0.2)^t[/tex]
[tex]P_{1}(t) = 100(1.2)^t[/tex]
The other culture starts to hours later, and we want to take that time as a parameter. So
[tex]P_{1}(2) = 100(1.2)^2 = 144[/tex]
Which means that when culture 2 growth starts, the population size of culture 1 is described by the following equation:
[tex]P_{1}(t) = 144(1.2)^t[/tex]
Two hours later 60 of the same type of bacteria are placed in a culture that allows a 30% growth rate.
This means that [tex]P(0) = 60, r = 0.3[/tex]. So
[tex]P(t) = P(0)(1+r)^t[/tex]
[tex]P_{2}(t) = 60(1+0.3)^t[/tex]
[tex]P_{2}(t) = 60(1.3)^t[/tex]
After how many hours do both cultures have the same population?
This is t for which:
[tex]P_{1}(t) = P_{2}(t)[/tex]
So
[tex]144(1.2)^t = 60(1.3)^t[/tex]
[tex]\frac{(1.3)^t}{(1.2)^t} = \frac{144}{60}[/tex]
[tex](\frac{1.3}{1.2})^t = \frac{144}{60}[/tex]
[tex]\log{(\frac{1.3}{1.2})^t} = \log{\frac{144}{60}}[/tex]
[tex]t\log{\frac{1.3}{1.2}} = \log{\frac{144}{60}}[/tex]
[tex]t = \frac{\log{\frac{144}{60}}}{\log{\frac{1.3}{1.2}}}[/tex]
[tex]t = 11[/tex]
Both cultures will have the same population after 11 hours.
What is the angle measure of 2x+1°
Answer:
25 degrees
Step-by-step explanation:
Haha, awesome! Just did a problem like this!
All angles add up to 180, so set it up like this:
2x + 1 + 5x + 5 + 90 = 18
Combine like terms.
7x + 96 = 180
7x = 84
x = 12
Plug x back into 2x + 1
2(12) + 1
24 + 1
= 25 degrees
While we're at it...
5(12) + 5
60 + 5
= 65 degrees (for the other angle)
25 + 65 + 90 = 180
Math checks out & we're good to go!
Hope this helped. :) <3
What is the median of 8, 7.5, 6, 5.75, 10.25, 13.75, 6.5, 8.75, 9, 8, 9.25, 10, 8.25, 8.25, 9.25, 11, 6.75, 7, 9.5, 8.5
Answer:
8.375
Step-by-step explanation:
5.75,6, 6.5, 6.75, 7, 7.5, 8, 8, 8.25, 8.25, 8.5, 8.75, 9, 9.25, 9.25, 9.5, 10, 10.25, 11, 13.75
8.25 + 8.5 = 16.75
16.75/2 = 8.375
put these fractions from least to greatest please!! 2/3 7/12 17/24 3/4
Answer:
7/12 < 2/3 < 17/24 < 3/4
Step-by-step explanation:
least to greatest
How many diagonals does a convex angle have?
A homeowner measured her rectangular backyard as having a length of 40 yards and a width of 25 yards. Her measurements were accurate to the
nearest yard. What is the range of possible values for A, the actual area in square yards of her backyard?
A
936 < A < 1,066
B
967. 75 < A< 1,032.75
с
999 < A< 1,001
D
999.5
Answer:
B.
Step-by-step explanation: