Answer: 99.7% of data will fall within 3 standard deviations of the mean. The mean is 500 and the standard deviation is 100. ... Since we are only concerned with the scores from 500 to 700, we only want the half that is greater than the mean: 95/2 = 47.5%, or 0.475.:
Step-by-step explanation:
Find the value of x in the triangle shown below 9 3
Answer:
x = 9.4868
Step-by-step explanation:
For this problem we can use the Pythagorean Theorem
Pythagorean theorem = [tex]a^2+b^2=c^2[/tex]
IN THIS CASE C = X
A and B are the side and base lengths of a right triangle.
C is the Hypotenuse side.
[tex]9^2+3^2=c^2[/tex]
Solve...
81 + 9 = [tex]c^2[/tex]
90 =[tex]c^2[/tex]
[tex]\sqrt{90}[/tex] = c
c = 9.4868
Today 108 people visited a water park during the first hour that the park was open. This number of people is 40% of the number of people who visited the water park during the first hour yesterday. How many people visited the water park during the first hour yesterday?
Answer:
40
___ x 108 = 43.2
100
3. Two computers in an office are connected to the same printer. The two computers and the printer form an isosceles triangle. Each computer is 30ft away from the printer. Don wants to connect the two computers to each other and needs to calculate how much cable will be necessary. He knows that 30 feet of cable already joins each computer to the printer and each computer is 40 degrees from the printer. Find the amount of cable needed to connect the two computers
3. Julio deposited $3,000 in a savings
account that pays 2.5% interest
compounded annually. What is the total
value of the account after 4 years?
A $3,311.44
C $3,117.18
B $3,300.00
D $3.075.00
I
Which choice could be modeled by a linear function?
A. The amount, y, of radioactive material remaining after x years when decay occurs at rate 30% each year.
B. The amount of money, y, In an account after x years earning 4% interest compounded annually.
C. The height, y, of a ball after bouncing x times, if each bounce reaches 2/3 the previous height.
D. The monthly cost, y, to use a cell phone for x minutes at a rate of 4 cents per minute.
Answer:
D
Step-by-step explanation:
D is linear because it increases the same amount each time
A university council wants to determine the need for a new staff room. The council conducted a survey of the staff by randomly speaking to 860 staff members out of 2,844 staff members. The council found that 70% of those surveyed were in favor of building a new staff room. Assuming a 90% confidence level, which statement holds true?
As the sample size is appropriately large, the margin of error is 0.036.
As the sample size is appropriately large, the margin of error is 0.026.
As the sample size is too small, the margin of error is 0.026.
As the sample size is too small, the margin of error cannot be trusted.
To find a margin of error for a sample proportion, these assumptions must be met, where n is the sample size and is the sample proportion.
First rewrite the proportion of positive responses as a decimal number.
Now substitute the sample proportion and the sample size, 860, into the formulas for the assumptions to determine whether they are met.
Both values are greater than 10, so the assumptions are met, and the margin of error can be calculated.
Find the margin of error using this formula, where z is the critical value.
For a 90% confidence level, . Substitute the values of z, n, and into the formula for margin of error and evaluate.
Answer:
As the sample size is appropriately large, the margin of error is 0.026
Step-by-step explanation:
4. If the sides of a square measure 9V3 units, then find the length of the diagonal.
Answer:
Step-by-step explanation:
To find the diagonal, use Pythagorean theorem,
diagonal² = side² + side²
= (9√3)² + (9√3)²
= 9²(√3)² + 9²(√3)²
= 81*3 + 81*3
= 243 + 243
= 486
diagonal = √486 = 22.05 units
I need help, pls help me?
Answer:
1 and 100
Step-by-step explanation:
Those are the chances of events
The ratio of cherry trees to apple trees at an orchard is 4 to 9. If there are 184 cherry trees, use a proportion to find a, the number of apple trees.
QUICK WHATS THE ANSWER
Answer:
132
Step-by-step explanation:
4 times 11 times 3 and that should be your answer
Allie is 26 years old. This is half of her
brother Alex's age, plus 5 years.
How old is Alex?
Answer:
18
Step-by-step explanation:
A bag contains:
.
5 red marbles
6 blue marbles
3 green marbles
4 black marbles
2 yellow marbles
.
.
A marble will be drawn from the bag and replaced 100 times. What is a reasonable prediction
for the number of times a green or black marble will be drawn?
F. 14
G. 65
H. 7
J. 35
Answer:
i would say the answer is J. 35
Step-by-step explanation:
sowwy if i am wrong but if not can have brainliest
someone please help me answer this!!
Answer:
17.9 units is the answer
Step-by-step explanation:
points are (-7,-2) and (9,6)
Pythagorean theorem can be written as,
[tex]d=\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \\\\d=\sqrt{9-(-7))^2 + (6-(-2))^2}\\\\d=\sqrt{(16)^2+(8)^2} \\\\d=\sqrt{256+64} \\\\d=\sqrt{320} \\\\d=17.88[/tex]
Rounding off,
d = 17.9 units
X minus thirteen can be represented by what expression
Answer:
[tex]x - 13[/tex]
x minus thirteen = x - 13.
Answer:
x-13
Step-by-step explanation:
For each part below, use the figure to fill in the blank.
Answer:
a) m<F = 70
b) AB = 6
Step-by-step explanation:
a)
Since this is an isoceles triangle, the base angles are equal so:
2x + 40 = 180
2x = 140
x = 70
b)
Since all of the angles are equal, this is an equilateral triangle. This also makes all of the sides equal and the same.
El area de un triángulo es de 63.6 cm2 . El largo de uno de sus lados es de 12 cm. Cuanto mide el otro lado?
Answer:
has visto los diarios de vampiros?
Step-by-step explanation:
i need help on 2 & 3 ASAP
Answer:
2)100
3)100
Step-by-step explanation:
Alan would like to pitch an idea about a new approach to sales at the next company meeting. He plans to present the following bar graph during his pitch to convince his boss to try out his approach in the lowest performing region in the third quarter. According to the bar graph, which region fits this description?
Answer:
south
Step-by-step explanation:
pls help! i’m giving brainliest :)
Shonda is making cookies with her family. They mix 2 cups of flour with a half cup of sugar. How many cups of sugar will they need if they used 8 cups of flour?
I need help! Can you help me pls?
Answer:
The first one
Step-by-step explanation: the ABC triangle has a 25-degree angle and a 90-degree angle as you can see by the marks. The first triangle has a 25-degree angle and a 90-degree angle as you can see by the marks. The second one does have a 90-degree angle but it's a different shape and has no 25-degree angle. The third one has both angles 25 and 90 but if you look close it's a different shape. The last one does not have a 90-degree angle but it does have a 25-degree angle and it's a different shape.
So it would be the first option.
Helen puts 50 marbles into 9 jars. First, she puts in the greatest
possible number of marbles into each of the 1st 8 jars. Each of these
8 jars has an equal number of marbles. The remaining marbles are
then put into the 9th jar. How many more marbles does she need for
the 9th jar such that every jar has the same number of marbles?
Answer:
She needs 4 more marbles for the 9th jar.
Step-by-step explanation:
Multiples of 8:
M = {0, 8, 16, 24, 32, 40, 48, 56, ...}
First, she puts in the greatest possible number of marbles into each of the 1st 8 jars.
The total is the greatest multiple of 8 below 50, which is 48.
In each jar:
48/8 = 6
The remaining marbles are then put into the 9th jar.
50 - 48 = 2 in the 9th jar.
How many more marbles does she need for the 9th jar such that every jar has the same number of marbles?
All others have 6, the 9th has 2.
6 - 2 = 4
She needs 4 more marbles for the 9th jar.
What is the measure of n?
12
4.
n
m
1 =>
[?]
Enter
no links i’ll give you brainliest please help
What is the equation of a line in slope intercept form parallel to 2x-y=2 and passes through point 1,10
Answer:
Slope intercept form:
y = 2x + 8
Step-by-step explanation:
Parallel lines have same slope. SO find the slope of 2x - y = 2
2x - y = 2
-y = -2x + 2
Multiply both sides by (-1)
-y*(-1) = -2x*(-1) + 2 *(-1)
y = 2x - 2
Slope = 2
m =2 and point (1 , 10)
Slope point form: y - y1 = m(x -x1)
y - 10 = 2(x - 1)
y - 10 =2x - 2
y = 2x - 2 + 10
y = 2x + 8
[tex]\frac{}{}[/tex]
3
Question 5 (1 point)
Jasmine has 14 roses in a vase.
6
2 roses are yellow.
5 roses are pink.
3 roses are white.
4 roses are red.
9
12
What is the probability that Jasmine randomly selects a
red rose, replaces it, and then a pink rose?
1
A.
9
C.
28
5
3
10
B.
5
D.
49
91
Loo
The probability distribution for a
random variable x is given in the table.
-5
-3
-2
0
2
3
Probability
.17
.13
.33
.16
.11
.10
Find the probability that -2
I WILL MARK YOU AS THE BRAINLIEST IF YOU ARE CORRECT! Below is how tall (in meters) each of the five players on Deandra's basketball team is.
Find the median height.
Write the equation of the graphed circle.
Can someone help me please?
Answer:
5 1/6
Step-by-step explanation:
Helppppppppppppppppppppppppp
A book had length of 5 inches and a width of 8 inches what is the area of the book