Answer:
3 students
Step-by-step explanation:
Two ways you can do this:
1. If you have a graphic calculator you can find the normal distribution function and enter the following values to get the probability of a student finished in less than 5 minutes:
Lower: 0
Upper: 5
Standard Deviation: 1
Mean: 6
This gives a probability of: 0.1587 (4.d.p)
2. You can use the formula and find the probability using the Z-table.
[tex]Z = \frac{x - \mu}{\sigma}[/tex]
Substitute known values:
[tex]Z = \frac{5 - 6}{1}\\Z = -1/1 = -1\\[/tex]
It is one standard deviation to the left of the mean,.
Look up on Z-score table and we get: 0.1587 (4.d.p)
Now we need to find expected number. We do this by multiplying the probability by the amount of people:
0.1587 x x19 = 3.0153 rounded to 3 students.
Hope this helped!
Answer:
3
Step-by-step explanation:
find the 39% of number 65
Answer:
the answer would be 25.35
Step-by-step explanation:
To save money for a new phone, Terrell took a part-time job wrapping gifts. He wraps 3 gifts in 10
minutes.
Complete the table
HELPPP CAN SOMEONE TELL ME WHAT TO PUT IN THE TABLE
Answer:
* 0.3
Step-by-step explanation:
10 30 4.5 5.4
3 9 15 18
5/6x -4 =6
how do you solve for x?
Answer:
x=12
Step-by-step explanation:
so first you add 4 to both sides:
[tex]\frac{5}{6}[/tex]x - 4 = 6
+4 +4
= [tex]\frac{5}{6}[/tex]x = 10
now you divide 10 by [tex]\frac{5}{6}[/tex] or you can flip the fraction upside down and multiply it by 10:
[tex]\frac{6}{5}[/tex] × 10 = [tex]\frac{60}{5}[/tex] = 12
x = 12
Solve for x:
Add 4 to both sides-
5/6x - 4 = 6
+4 +4
5/6x = 10
Now divide 5/6 on both sides-
(5/6)/(5/6) = 10/(5/6)
x = 12
hope this helps !!
Seema is travelling to Spain. She travels a distance of 5,700 km by plane to Edinburgh and then another 2,100 km to Madrid. Both planes fly at an average speed of 900 kmh-1. What is her total flight time in hours and minutes, to the nearest minute?
jay decided to go parachuting. Her elevation drops by -80 feet in 8 seconds. How far is she dropping each second
carley beat the school record for the 400 meter by 1.3 seconds. if she ran the race in 55.7 seconds what was the record?
Can someone give me this answer plz it’s timing
Answer:
28
Step-by-step explanation:
14x2=28
Hey!!:D
this is pretty urgent (only have to the end of the period to finish) hurry pleaseeee lol
Answer:
A,C, and D.
Step-by-step explanation: I promise
2 and 4, Also could do brainliest i'm trying to level up.
The table shows the heights that four people parachute from an airplane. What is the range of the heights? Write your answer as a decimal or fraction in simplest form
The range is 7/20 of a mile.
OA.
Simplify the expression -3: (-3)
.
-7
-1
Oc. 1
OD. 71 격
CIH NIH
O B.
O .
Answer:
I hope I help you with your Q
THANKS GIVE MY LIKE
Write the given fraction as a decimal: 18/40.
Mrs. Davis’ gym class has 24 girls and 18 boys. She wants to separate the class into stations. Each station must have the same numbers of girls and boys.
What is the greatest number of stations Mrs. Davis can make if every student has to participate in a station?
Answer:
6 stations
Step-by-step explanation:
Find the GCD of 24 and 18 in order to get the greatest number of stations
GCD is 6
Which situation can be represented by the equation 4d + 5 = 29?
A.
Marvin worked 4 hours a day plus an additional 5-hour day for a total of 29 hours.
B.
Marvin worked 9 hours a day for a total of 29 hours.
C.
Marvin worked 4 hours one day plus an additional 5 hours for a total of 29 hours.
D.
Marvin worked 4 days plus 5 hours for a total of 29 hours.
write a mixed number and an improper fraction for the model below
Answer:
2 and 3/4
11/4
Step-by-step explanation:
an improper fraction is any fraction with a numerator bigger then the denominator.
a mixed number is the "proper" version of an improper fraction.
the fraction 11/4 as a mixed number is 2 and 3/4.
to make an improper fraction a mixed number, find out how many times the denominator goes into the numerator. whatever you have left that didn't make 1 whole, turns into the fraction .
hope this helped
subtract 8 from 5 times g
Answer:
5g-8
Step-by-step explanation:
i don't know
have a great day
Reflect the point over the y axis. (8, -3)
Answer:
-8, 3
Step-by-step explanation:
Reflections formula
Y-axis (-x, y)
X-axis (x, -y)
Answer:
https://scratch.mit.edu/projects/580972810/
Step-by-step explanation:
This website is a link to a Scratch project. It's mine.
I made this because I couldn't do it on Brainly.
This is NOT a scam. I promise.
It will have a tiny purple ball which is the oringinal, and a green one which is the reflected.
solve the inequality. 4w < 0
Answer:
w<0
Step-by-step explanation:
divide both sides by 4
Answer:
0<0
Step-by-step explanation:
divide both sides by 4 and it leaves you with 0 on both sides.
A car travel at an average speed of 60miles per hour on a trip. What is the car's speed in feet per second?
Answer:
88ft per second hope i helped
What is the missing value?
Answer:
15
Step-by-step explanation:
The pattern is times 3.
21 ÷ 7 = 3
27 ÷ 9 = 3
To solve this, do 5 x 3.
Therefore, 15 would be your answer.
-kiniwih426
PLEASE HELP LOOK AT IMAGE WILL GIVE BRAINLIEST
Answer:
IT IS THE SECOND ONEE
1/m8
Hey , May someone help me please and thanks<3
Answer:
[tex]1\frac{1}{5}[/tex]
Step-by-step explanation:
6-4 = 2
2 - [tex]\frac{4}{5}[/tex] = [tex]1\frac{1}{5}[/tex]
Answer Please !!!!!!!!!!!!!!!!!!!!!!!
Step-by-step explanation:
I can't draw here, but I can describe :
an isoceles triangle means that 2 sides of the triangle are equally long (they are typically called the "legs" left and right on top of the baseline).
this fact makes the triangle symmetrical.
and that means that 2 angles are also equal (the angles of the legs with the baseline).
so, knowing that one angle is 34 degrees can mean 2 things :
either 34 degrees is the angle between the 2 legs, or it is one of the 2 equal angles between legs and baseline.
as we know the sum of all angles in a triangle is always 180 degrees.
so case 1 : 34 degrees is the angle between the legs
180 = 34 + 2×base-leg-angle
144 = 2×base-leg-angle
each base-leg-angle = 72 degrees
case 2 : 34 degrees is one of the base-leg-angles
180 = 2×34 + between-the-legs-angle
180 = 68 + between-the-legs-angle
between-the-legs-angle = 112 degrees
so, you need to draw one triangle for each case.
since we don't know anything about the side lengths, size does not matter. only the angles need to be correct :
one triangle with 34, 72, 72 degrees
and one triangular with 34, 34, 112 degrees
i attached my questions thx
Answer:
Answer:
1. x15 (a)
2. 1/x15 (b)
Step-by-step explanation:
multiply exponents
simplify expression
Step-by-step explanation:
x^2+2n-35
the options are:
x + 2)(x - 35)
(x - 5)(x + 7)
(x + 5)(x - 7)
(x - 5)(x - 7)
[tex]\large \boldsymbol {} 1-st \ method \\\\ x^2+2x-35=0 \\\\ x^2+\underbrace{7x-5x}_{2x}-35=0 \\\\( x^2+7x)+(-5x-35) =0 \\\\ x\underline {(x+7)}-5\underline{(x+7)}=0 \\\\ \boxed{(x-5)(x+7)=0 } \\\\ ---------\\\\ 2-nd \ method \\\\ x^2+2x-35=0 \\\\ \begin {cases} x_1+x_2=-2 \\ x_1x_2=-35\end{cases} \Longrightarrow x_1=5 \ ; \ x_2=-7 \\\\\\ x^2+5x-35=(x-x_1)(x-x_2)=\boxed{(x-5)(x+7 )}[/tex]
[tex]\rm \large \boldsymbol {} Answer : \ \boxed{2) \ (x-5)(x+7 )}[/tex]
which of the following fractions is equivalent to 75%
Answer:
Where are the fractions?
Step-by-step explanation:
There's 3/4, 9/12, 27/36, etc
Answer:
3/4
Step-by-step explanation:
First you would take 75/100 and than simplify that down so you get 3/4
4. Each morning you do a combination of aerobics, which burns about 12 calories per
minute, and stretching, which burns about 4 calories per minute. Your goal is to burn
416 calories during a 60-minute workout. How long should you spend on each type of
exercise to burn the 416 calories?
22 minutes is spent doing aerobics and 38 minutes doing stretching
Let x represent the amount of time spent doing aerobics, Let y represent the amount of time spent doing stretching.
Since the goal is to do a 60-minute workout, hence:
x + y = 60 (1)
Also, 416 calories needs to be burnt hence:
12x + 4y = 416 (2)
We need to solve equation 1 and 2 simultaneously; multiply equation 1 by 4 and subtract the result from equation 2, hence:
8x = 176
x = 22 minutes
Put x = 22 in (1)
22 + y = 60
y = 38 minutes
Therefore 22 minutes is spent doing aerobics and 38 minutes doing stretching.
Find out more at: https://brainly.com/question/16763389
can someone help me!
Answer:
Step-by-step explanation:
T(-2,-4) T' (-4,-2)
R (8,2) R' (2,8)
S (4,-9) S' (-9,4)
b) answer is (x,y) is (y,x)
Find the measure of the missing angles.
98°
с
b
Answer:
196
Step-by-step explanation:
a- 98
b-196
c-196
d=98
add 98+98=196
halp! 7|2x+8|-5<9. please give the explanation.
Step-by-step explanation:
[tex]789 \sqrt[236]{456 = 10236} [/tex]
it is the answer
m + 0 = m
what's the property of this?
Answer:
identity property of addition
Step-by-step explanation: