Answer:
C
Step-by-step explanation:
2:3
612:18
the rest doesnt equal have the same number to multiply
3. Make 2 equivalent ratios for each given:
3:2
12:8
7:21
A circular swimming pool has a radius of 3.5 meters. Liz is placing a piece of rope around the
edge of the pool. If Liz has exactly enough rope, which measurement is dosest to the length
of the piece of rope in meters?
Answer:
220m
Step-by-step explanation:
2 pie r=2*22/7*3.5=220 m
Gallup conducted a survey from April 1 to 25, 2010, to determine the congressional vote preference of the American voters.15 They found that 51% of the male voters preferred a Republican candidate to a Democratic candidate in a sample of 5,490 registered voters. Gallup asks you, their statistical consultant, to tell them whether you could declare the Republican candidate as the likely winner of the votes coming from men if there was an election today. What is your advice
Answer:
p ( x > 2746 ) = p ( z > - 1.4552 )
= 1 - 0.072806
= 0.9272
This shows that there is > 92% of a republican candidate winning the election hence I will advice Gallup to declare the Republican candidate winner
Step-by-step explanation:
Given data:
51% of male voters preferred a Republican candidate
sample size = 5490
To win the vote one needs ≈ 2746 votes
In order to advice Gallup appropriately lets consider this as a binomial distribution
n = 5490
p = 0.51
q = 1 - 0.51 = 0.49
Hence [tex]n_{p}[/tex] > 5 while [tex]n_{q}[/tex] < 5
we will consider it as a normal distribution
From the question :
number of male voters who prefer republican candidate ( mean ) ( u )
= 0.51 * 5490 = 2799.9
std = [tex]\sqrt{npq}[/tex] = [tex]\sqrt{5490 * 0.51 *0.49}[/tex] = 37.0399 ---- ( 1 )
determine the Z-score = (x - u ) / std ---- ( 2 )
x = 2746 , u = 2799.9 , std = 37.0399
hence Z - score = - 1.4552
hence
p ( x > 2746 ) = p ( z > - 1.4552 )
= 1 - 0.072806
= 0.9272
This shows that there is > 92% of a republican candidate winning the election hence I will advice Gallup to declare the Republican candidate winner
Help&EXPLAIN
•••••••••••••••••••
Help plz
Answer:
diameter = 2.5 feet
Step-by-step explanation:
Circumference of a circle is given as C = πd
Circumference of the tree trunk = 7.85 ft
π = 3.14
Diameter of the tree trunk = d
Thus:
7.85 = 3.14*d
Divide both sides by 3.14
7.85/3.14 = 3.14*d/3.14
2.5 = d
d = 2.5 ft
2/100000 as a desimal
Answer:
200,000
Step-by-step explanation:
100000 + 100000
Sarah makes $3000 contributions at the end of each half-year to a retirement account for 8 years. For the next 20 years, she makes no additional contributions and no withdrawals. If the account earns 7.5%, compounded semi-annually, find the value of the account after the 28 years.
(b) If the above account is used to set up an annuity that pays her an amount at the beginning of each 6-month period for the next 20 years, how much will each payment be?
Answer:
I think its aa.... I think its aa.... Carrot
Step-by-step explanation:
in a traffic survey 80 vehicles bikes and buses and cars were recorded 3/4 of the vehicles were cars and 20% were buses.how many buses ar there
Answer:
There are 16 buses
Step-by-step explanation:
HOPE THIS IS HELPFUL!!!
4) Evan bought 6 roses for his mother. 2/3 of the roses were red. How many red roses were there?
Answer:
4 roses were red.
Step-by-step explanation:
(2/3)*6=4
3
a) The average rainfall of the last week was 35 mm. If the records of daily
rainfall from Sunday to Friday were 45 mm, 22 mm, 28 mm, 36 mm, 30 mm
and 24 mm, find the rainfall on Saturday.
Answer:
The rainfall on Saturday was of 60 mm.
Step-by-step explanation:
Average rainfall:
The average rainfall is given by the total rainfall divided by the number of days(7). So
If the records of daily rainfall from Sunday to Friday were 45 mm, 22 mm, 28 mm, 36 mm, 30 mm and 24 mm
On Saturday it was of x mm. So
[tex]35 = \frac{45 + 22 + 28 + 36 + 30 + 24 + x}{7}[/tex]
[tex]185 + x = 245[/tex]
[tex]x = 245 - 185[/tex]
[tex]x = 60[/tex]
The rainfall on Saturday was of 60 mm.
0 What is A U B?
Set A = 1, 2, 3, 4
Set B = 2, 3, 6, 10, 11
Answer:
A U B= 1,2,3,4,6,10,11
Step-by-step explanation:
because A union B is all number from set A and set B together without repeating
1)1/4+1/2
2)7/10-3/5
3)1/2-2/6
With lowest term
Thank you who answer my question
Which triangle can be used to find the slope of the line shown? explain your answer
Answer:
A right triangle contains a right angle, so it must have two sides that are perpendicular. If the slopes of two sides can be shown to be negative reciprocals of each other, then it can be concluded that a right angle is formed. If a triangle contains a right angle, then it is a right triangle
Step-by-step explanation:
to determine if a triangle is a right triangle using slopes, you have to understand perpendicular slopes/negative reciprocals.
You can calculate the slope of all 3 sides of the triangle and if two of the slopes are negative reciprocals, then those two lines intersect creating a right angle/right triangle.
Let's say there's triangle ABC.
If the slope of AB is 1/2
and the slope of BC is 2/5
and the slope of CA is -2/1
then AB and CA intersect resulting in a right angle (triangle).
As a percentage, $9.00 is equal to
What % of $20.00.
Answer:
45%
Step-by-step explanation:
let's say 20 is 100%
10 is 50%
then 10 divided by 5 (to get 10%) is 2
so 1 is 5%
then we wanna get 9 so we do 10-1 which equals the percentages 50-5 to get 45%
Write an expression equivalent to 5(3m+n)
Answer:
15m+5n
Step-by-step explanation:
5(3m+n) In this case you need to multiply. 5x3m is 15m; 5xn is 5n. 15m+5n
What is the length of the missing side? Round to the nearest tenths if necessary.
Answer:
[tex]\sqrt{207}[/tex]
Step-by-step explanation:
Use the right triangle formula c^2=a^2+b^2
C is the number of the hypothenuse while b and c are the 2 others.
16^2=7^2+a^2
256=49+a^2
now solve for the equation.
a^2=207
now take the square root of both.
a=[tex]\sqrt[2]{207}[/tex]
A researcher reports that the standard deviation in population is A is q= 2.3 and the standard deviation in population B is q=4.3. Which population is associated with the highest power to detect an effect?
Answer:
Population A
Step-by-step explanation:
Usually in statistics, the more we increase the sample size, the more the standard deviation decreases. Similarly, the more we decrease the sample size, the more the standard deviation increases.
Finally, the more the standard deviation or error of Variance the lesser the power to detect an effect.
In this question, Population B has a greater standard deviation and thus would not have as much power as Population A in detecting an effect.
Thus Population A with standard deviation of 2.3 will have highest power to detect an effect.
In a sale the price of a bike is reduced by 40% the sale price of the bike is £192 how much did the bike cost before the sale?
Answer:
£268.8
Step-by-step explanation:
192 = 100%
19.2= 10%
19.2 x 4 = 76.8
76.8 = 10%
76.8 + 192 = 268.8
I hope this helped :)
Andy wants to do 32 sit-ups in all. He did 11 sit-ups. How many more sit-ups must Andy do?
Answer:
21 :P
Step-by-step explanation:
Let f(x)=x+1 and g(x)=5x evaluate the composition (f•g)(-1)
Answer:
[tex](f\circ g )(x) = -4[/tex]
Step-by-step explanation:
We have
[tex](f\circ g )(x) := f(g(x))[/tex]
Therefore,
[tex]f(x)=x+1 \implies f(x)=g(x)+1[/tex]
So,
[tex](f\circ g )(x) = 5x + 1[/tex]
For [tex]x = -1:[/tex]
[tex](f\circ g )(x) = 5(-1) + 1 = -5+1=-4[/tex]
For what values of x and y is PQRS a parallelogram?
Answer:
[tex]y =2[/tex]
[tex]x =3[/tex]
Step-by-step explanation:
Given
The attached parallelogram
Required
Find x and y
Opposite sides are equal
So:
[tex]PQ = SR\ and\ QR = PS[/tex]
This gives:
[tex]2y + 3 = y + 5[/tex] -- (1)
[tex]4x - 3 = 4y + 1[/tex] -- (2)
[tex]2y + 3 = y + 5[/tex]
Collect like terms
[tex]2y - y= 5 - 3[/tex]
[tex]y =2[/tex]
[tex]4x - 3 = 4y + 1[/tex]
Substitute [tex]y =2[/tex]
[tex]4x - 3 = 4 * 2 + 1[/tex]
[tex]4x - 3 = 9[/tex]
Collect like terms
[tex]4x = 3 + 9[/tex]
[tex]4x = 12[/tex]
[tex]x =3[/tex]
Which of the following can be used to prove that AABC = AADC?
Answer:
AAS postulate
Step-by-step explanation:
Answer:
i hope it help u:))
Step-by-step explanation:
i think that it will be ASA postulate
Someone plsssss help I only have 5 minutes remaining
Graph the equations to solve the system y=x+4 y= -x - 6
Answer:
(-5, -1)
General Formulas and Concepts:
Algebra I
Functions
Graphing
Reading a Cartesian PlaneCoordinates (x, y)Solving systems of equations by graphing
Step-by-step explanation:
Where the 2 equations intersect is the solution to the systems of equations.
Please help me this is due in 10 min and I dont understand this.
Please :)
find the values of the variable for each parallelogram
2) M angle 1 equals 3y - 6
Answer:
x = 5
z = 7.5
y = 32
Step-by-step explanation:
both x and z angles are equal to 45°
45 / 9 = 5 = x
45 / 6 = 7.5 = z
for m angle 1, y should get you 90°
some trial and error and i found 32 = y
hope this helps :)
fggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg
Answer:
5 ^7
Step-by-step explanation:
2. Analyze this inequality.-4x < 12
a) x > -3 b) x < -3
c) x ≤ -3 d) -x < 3
Answer:
answer is b
Step-by-step explanation:
-4x<12
x<12÷-4
x<-3
I need to know the answer and how you got there. I suck at math and my kids answers aren’t part of the answer key.
In the name of all parents who share in my struggle.
PLEASE!
Answer:
Why is a parent on Brainly??? Kinda weird><>
Step-by-step explanation:
in class of 24 pupils, 4 need additional support
Answer:
1 out of ever PUPILS need support
Step-by-step explanation:
4/24=1/6
3. If a week is 7 days, what fraction of a week is 2 days?
I need help can any on help me
Answer:
Simplify 3log3(-5) = undefined?
Step-by-step explanation: