Answer:
1/8
Step-by-step explanation:
9/8=9x
x= 1/8
Refer to the Exhibit Student Grades. The professor has informed the class that 7.93 percent of her students received grades of A. What is the minimum score needed to receive a grade of A
This question is incomplete, the complete question is;
Refer to the Exhibit Student Grades. A professor at a local university noted that the grades of her students were normally distributed with a mean of 73 and a standard deviation of 11.
The professor has informed the class that 7.93 percent of her students received grades of A. What is the minimum score needed to receive a grade of A
Answer:
the minimum score needed to receive a grade of A is 88.51
Step-by-step explanation:
Given the data in the question;
Let x represent the grades of the students that were normally distributed with mean μ = 73 and standard deviation σ = 11.
so, The professor has informed the class that 7.93 percent of her students received grades of A
the minimum score needed to receive a grade of A will be:
P( X > x ) = 7.93 %
P( X > x ) = 0.0793
1 - P( X ≤ x ) = 0.0793
- P( X ≤ x ) = 0.0793 - 1
- P( X ≤ x ) = - 0.9207
P( X ≤ x ) = 0.9207
⇒ P( X-μ/σ ≤ x-μ/σ ) = 0.9207
so, x-μ/σ = InvNormal( 0.9207 )
x-μ/σ = 1.41
(x - 73) / 11 = 1.41
(x - 73) = 1.41 × 11
(x - 73) = 15.51
x = 15.51 + 73
x = 88.51
Therefore, the minimum score needed to receive a grade of A is 88.51
A. Find the slope of the line,
b. Find the y-intercept of the line.
c. Write the equation for the line.
Answer:
slope:-2/3
y-intercept= 2
equation y= -2/3x+2
Step-by-step explanation:
pick two points from graph then plug to the formula to find the equation
Is either x=6 or x =7 a solution to x +7=13
Answer:6
Step-by-step explanation:
A 7th grade classis selling packages of cotton candy at a festival for $2.95 each. Each package costs them $0.95 to make.They expect to sell between 900 and 1,000 packages of cotton candy during the festival.What is a reasonable estimate of the class’s profit?
A. $900
B. $1,000
C. $2,000
D. $3,000
Answer:
Answer C.
Step-by-step explanation:
The class sells them for $2.95, assuming $0.95 manufacturing cost per, leaving $2.00 profit per bag. If they sell 900-1000 packages at $2.00, it leaves $1800-$2000 profit.
Answer:
if you see they have 2.95 and 0.95 you need to combert to a decimal and then you need to subtract 900 and 1,000
Step-by-step explanation:
and oviosly is a 900
-4(2x+7) = 2x - 18 Solve for x
Answer:
x = -1
Step-by-step explanation:
-8x - 28 = 2x - 18
+28 +28
-8x = 2x + 10
-2x -2x
-10x = 10
÷-10 ÷-10
x = -1
Answer:
1.Distribute
2.Add 28 to both sides
3.Simplify
4.Subtract 2x from both sides
5.Simplify
6.Divide both sides by the same factor
7.Simplify
x =-1
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48%
A community centre organises a raffle to raise money for charity.
There is 1 prize to be won in the raffle.
Daniel buys 17 raffle tickets.
A total of 280 tickets were sold.
Find the probability that Daniel does not win the prize.
Answer:
263/280 or 0.9
Step-by-step explanation:
if daniel has 17 raffle tickets that mea\ns he has 17 chances of winning. and the question says chance that he wont win
so
280-17 (out of 280)
=263/280
Mrs. Garcia is painting a portion of her wall as shown.
What is the area of the wall she will paint?
If one quart of paint covers 25 square feet, how many
quarts will she need to buy? [paint x area]
Answer:
Step-by-step explanation:
Use the Distributive Property to solve the equation.
3 = 3/4 ( b - 8 )
Answer:
b = 12
Step-by-step explanation:
First, distribute 3/4 to both terms in the parentheses:
3 = 3/4(b - 8)
3 = 3/4b - 6
Now, solve for b:
9 = 3/4b
12 = b
So, the answer is b = 12
Answer:
12
Step-by-step explanation:
3 = 3/4 x (b-8)
Distribute 3/4 through the parentheses
3 = 3/4 b - 6
Multiply both sides of the equation by 4
12 = 3b - 24
Move the variable to the left - hand side and change its sign
-3b = -24 - 12
Calculate the difference
-3b = -36
Divide both sides of the equation by -3
B = 12
look at the picture I attached
Answer:
Sorry it appears that that I can't answer this question because I need more info than that to answer.
Step-by-step explanation:
In a lottery, 6 numbers are randomly sampled without replacement from the integers 1 to 45. Their order of selection is not important. Find the probability of holding a ticket that has zero winning numbers out of the 6 numbers selected for the winning ticket out of 45 the possible numbers
Answer:
p=39/45=13/15
Step-by-step explanation:
Cos B- CosC/CosA+1=c-b/a
Answer:
Sorry can't help you but good luck
PLEASE HELP Mary has an essay due in 4 days. She estimates that she needs to spend 6 hours working on her essay. She wants to split up the work and work the same amount of time each day. Mary goes to bed at 10:00 p.m. and plans to work on her essay right before she goes to sleep. What time should Mary start working on her essay each night so she can complete her essay on time?
9:00 p.m.
8:00 p.m.
9:30 p.m.
8:30 p.m.
Answer:
8:30
Step-by-step explanation:
Because 6 ÷ 4 is 1.5. also know as 1.5hrs before bedtime.
Answer: I think the answer is 8:30
Step-by-step explanation:
6÷4= 1.5
8:30 + 1:30 = 10:00
1) How many solutions does x + y = 12 have?
Answer:
D ko alam hahahahhahaahahahahahahahahahahahahahahahaaha
help me me need help me me me me me
Answer:
The last answer D.
Step-by-step explanation:
There is a short trick that I just used to answer this question, all you have to do is add 12 plus 5 to see how many 1/12ths you would have and then add up all the answer options until you get to 17, and the only one that does is the last one, D.
Hope this helps :)
1: If a = 5/2 then 1/a =
A. 2
B. 5
C. 2/5
D. 5/2
Answer:
C. 2/5
Step-by-step explanation:
IF a = 5/2 then
1/a = 2/5
Hope it will help :)
What is twice the difference of a number and 6 is 5
Answer:
8.5
Step-by-step explanation:
Twice the difference of a number and 6 equals 5 is written algebraically as 2(x-6)=5, where x is the number. Solving for x:
2(x-6)=5
(x-6)=5/2
x=6+5/2
x=17/2
So the number is 17/2, or, expressed as a decimal number, 8.5
What is the value of x?
Answer:
D
Step-by-step explanation:
Remark
The two angles across from each other are equal.
Equation
5x - 1 = 124 Add 1 to both sides
Solution
5x - 1 + 1 = 124 + 1 Combine
5x = 125 Divide by 5
5x/5 = 125/5
x = 25
Cumulative Frequency (C.F)
a- The fraction or percentage of
observation below the upper
boundary of each successive
interval.
b- The absolute frequency divided
by the total number of observation.
C-Its obtained by adding relative
Frequency
d-b and c
e-a and c
f-all of the above.
Answer:
number 2 + 4i is one of the root to the quadratic equation x 2 + bx + c = 0, where b and c are real numbers. a) Find b and c b)
Step-by-step explanation:
On Sunday, a local hamburger shop sold a combined total of 252 hamburgers and cheeseburgers. The number of cheeseburgers sold was two times the number of hamburgers sold. How many hamburgers were sold on Sunday?
Answer:
84 Hamburgers
Step-by-step explanation:
Hamburger = x
Cheeseburger = 2x
x+2x = 252
252/3 = x
x = 84
Hope this helps! (:
1. Find the surface area using the net 20 m 12 m 12 m 2. Find the surface area.
Answer:
1248
Step-by-step explanation:
Surface are of a rectangular prism can be found using:
A=2(wl+hl+hw)
Plug in the given values of
l= 12m
w=12m
h=20m
to this equation and you get:
1248
please help, I’ll give brainliest to first answer.
x=60° because if 150°=90°+60° so a line is 180° consequently
90°+30°+x=180°
120°+x°= 180°
x°= 180°-120°= 60°
Ziv's taxicab ride cost $33. He left a 15% tip.
What was the total cost of the taxicab ride with tip?
Enter your answer in the box.
Answer:
Step-by-step explanation:
1. Find 15% of $33 to find the tip.
Find 1% of $33 (move the decimal over 2 places to the left. $0.33
2. Multiply the 1% tip by 15%
33 * 15 = $4.95
3. Add $33 and $4.95
4.95 + 33.00 = $37.95 total
giving brainliest plz answer
Answer:
Surprisingly someone asked the same question.
Step-by-step explanation:
Credit to the person who actually answered.
A verandah of width 2.25 m is constructed all along outside a room which is 5 m long and 3 m wide. Find:
(1) the area of verandah and
(ii) the cost of cementing the floor of verandah at the rate of 7 275 per m².
who answers first will be marked as brainliest iam serious no scam
Answer:
(i)The length of room = 5.5 m and width of the room = 4 m
The length of room with verandah = 5.5 + 2.25 + 2.25 = 10 m
The width of room with verandah = 4 + 2.25 + 2.25 = 8.5 m
Area of verandah = Area of room with verandah – Area of room without verandah = Area of ABCD – Area of EFGH = (AB x AD) – (EF x EH) = (10 x 8.5) – (5.5 x 4) = 85 – 22 = 63 m2
(ii) The cost of cementing 1 m2 the floor of verandah = Rs 200 The cost of cementing 63 m2 the floor of verandah = 200 x 63 = Rs 12,600
Pls help, I’ll give you brainliest
I arrive at 5:52 and play for 1 hour and 12 mins. What time do I stop playing?
Answer:
7:04 p.m.
Step-by-step explanation:
Answer:
7:04
Step-by-step explanation
12-8 + 4
5:52 + 0:08 = 6:00
6:00 + 1:00 + 7:00
7:00 + 0.04 = 7:04
Find the missing part.
X^2= AB^2 + BC^2
X^2= 8^2 + 10^2
X^2= 64+100
X^2= 164
X= 12.80
A circle has a radius that measures 9 centimeters what is the area of the circle to the nearest tenth use pie 3.14
Step-by-step explanation:
Given
radius (r) = 9 cm
Area of the circle (A)
= πr²
= 3.14 * 9²
= 3.14 * 81
= 254.34 cm²
Evaluate 4!5!/3!7! Simplify as much as possible
Mr. Moore deposits $3,550 in a money market account with an interest rate of 22%. If he does not deposit or withdraw any money from the account, how much will he have at the end of 9 months?
Answer:
$10,579, assuming that 22% is the rate per month
Step-by-step explanation:
Here, I'll assume that the interest rate is per month.
The simple interest formula is [tex]I=Prt[/tex] (Interest = principal * rate * time). The rate and time need to use the same units.
The principal is $3550, the rate is 0.22, and the time is 9, so [tex]I=(3550)(0.22)(9)[/tex]. The product is 7029.
This is added to how much money he already has: 7029+3550=10579