Answer: А. On average, the number of students going to an office hour varies from the mean by about 2.2 students
Step-by-step explanation:
The standard deviation is a measure of spread, which gives how values deviate from the average or mean value of a particular distribution. Hence, the standard deviation is usually defined about the average value of a distribution.
Therefore, for a certain random variable representing the number of student who visits office hours, the standard deviation will be defined about the average or mean value of the random variable Q.
Thus, stated as ; number of students going to an office hour varies from the mean by 2.2 on average.
write in point-slope form an equation of the line that passes through the given point and has the given slope: (5,11); m = 4/5.
a. y -5 = 4/5(x -11)
b. y -11 = 4/5(x -5)
c. y + 11= 4/5(x + 11)
d. y + 11= 4/5(x + 5)
Answer:
b. y -11 = 4/5(x -5)
Step-by-step explanation:
Sarah's soccer team won 68% of the games they played. If they won 17 games, how many did they did they play?
Answer:
25
Step-by-step explanation:
Compare the data and get the answer
Answer:
25
Step-by-step explanation:
You spend 150 minutes in three classes. Write and solve a proportion to find how many minutes you spend in five classes.
Answer:
250 minutes
Step-by-step explanation:
I'm going to word it in a more complicated way so that you can already have this knowledge for future times...
3t = 150
150 ÷ 3 = 50
t × 5 = 250
PLEASE HELP GIVING 50 POINTS !!!!!!!
Answer:
Step-by-step explanation:
Name two numbers that are not integers but that are opposites.Explain how you know.
Answer:
1 and 2 ?
one is even the other is odd
3/4(8x^2+1)3x^2+1/4
Answer:
Please look at the attached image to see the answer.
48 is 32% of what number?
Answer:
150
Step-by-step explanation:
Because I looked it up
The midpoint of AB is M(4, -2). One endpoint is A(-2, 6). What is the other endpoint for B?
Answer:
endpoint for B is (10,-2)
Step-by-step explanation:
M={(x1+x2)/2,(y1+y2)/2}
(4,2)={-2+x2/2,6+y2/2)
By equating the x coordinates
4=-2+x2/2
8=-2+x2
8+2=x2
x2=10
By equating the y coordinates
2=6+y2/2
4=6+y2
4-6=y2
y2=-2
Therefore the endpoint for B is (10,-2)
Need help ASAP 25 points
Answer:
B and F
Step-by-step explanation:
(6-11)^2 =
6/11 x 6/11
6^2/11^2
36/121
The answers are B, E and F
A satellite flies 118404 miles in 15.18 hours. How long would it take to fly 174798 miles?
Answer:
22.41 hours
Step-by-step explanation:
Set up a proportion where x is the time to fly 174798 miles
[tex]\frac{118404}{15.18}[/tex] = [tex]\frac{174798}{x}[/tex]
Cross multiply and solve for x:
118404x = 2653433.64
x = 22.41
So, it would take 22.41 hours to fly 174798 miles
Ratio of dolls to teddy bears is 6:5. If the has 240 dolls how many teddy bears are there?
Determine if the following conditional statement is true or false,
alf B is between A and C, then AB + BC = AC
b.ITB is between A and C, then AB = BC,
✓
c. If AB = BC, then B is a midpoint,
Answer:AlF3
Step-by-step explanation:
a
26
70º y 11c
2d
5e
7f
110°
Answer:
lol never see
Step-by-step explanation:
this kind o questions
Sharon and Dani make invitations for a party.Sharon makes 27 invitations. That is 3 times as many as Dani makes.write and solve an equation to find the number of invitations Dani makes
Answer:
81 Invitations, 27 times 3 = 81
Step-by-step explanation:
Today only, a sofa is being sold at a 34% discount. The sale price is $231. What was the price yesterday?
Answer:
$309
Step-by-step explanation:
Evaluate the equation.
196b = 450.8
Answer:
b = 2.3
Step-by-step explanation:
450.8 / 196 = 2.3
Answer:
B=2.3
Step-by-step explanation:
196b÷196=450.8÷196
someone please help answer this, i need to simplify! it seems simple but i can’t!
Answer: 3
Hope this helps :)
how many repeating digits does the number 0.1515 have
Answer:
I suppose it has 4 digits.
Step-by-step explanation:
The fractional equivalent of the repeating decimal would be 15/99.
A. √5/3
B. 3√14/14
C. 3√5/5
D. 2√14
Help Plz
Answer:
This is a pretest, which is so you know what you don't know
so you shouldn't do this
Step-by-step explanation:
but just a hint, what is tangent?
in 1990 the estimated population of pittsburgh, pennsylvania, was 369,879. in 2000 the estimated population was 334,563. find the percent of decrease from the nearest whole percent from 1990 to 2000.
Answer:
9.55%
Step-by-step explanation:
1990 = 3,69,879 2000 = 3,34,563
%Decrease = Old Value - New Value/Old Value ×100%
%Decrease = 3,69,879 - 3,34,563/369879 ×100%
%decrease = 35316/369879 × 100%
%Decrease = 9.548%
%Decrease = 9.55%(Answer)
If the roots of the equation
lx²+nx+n=o is in the ratio p:q
then
√(p/q) + √(q/p)=?
Step-by-step explanation:
Let the given ratio be pk : qk .
So , here the quadratic equation is lx² + nx + n = 0. With respect to Standard form ax² + bx + c = 0.
We have ,
a = lb = nc = n→ Sum of roots = -b/a = -n/l = qk + pk
→ Product of roots = c/a = n/l = k²pq .
[tex]=> \dfrac{n}{l} = \dfrac{k^2}{pq} \\\\=> k^2 =\dfrac{n}{pql} [/tex]
And here pk and qk is a root of the quadratic equation ,
[tex]=> lx^2 + nx + n = 0 \\\\=> l(pk)^2 + n(pk) + n = 0\\\\=> lp^2k^2+npk + n = 0 \\\\=> lp^2\bigg( \dfrac{n}{pql} \bigg) + np\bigg(\sqrt{\dfrac{n}{pql}} \bigg) + n = 0 \\\\ => n\bigg\{\dfrac{p}{q}+\sqrt{\dfrac{np}{lq}}+1\bigg\} = 0 \\\\=> \dfrac{p}{q}+\sqrt{\dfrac{np}{lq}}+1 =0\\\\=>\sqrt{\dfrac{p}{q}} \bigg( \dfrac{q}{p}+\sqrt{\dfrac{np}{lq}}+1\bigg) = 0 \\\\=> \sqrt{\dfrac{p}{q}}+ \sqrt{\dfrac{q}{p}}+ \sqrt{\dfrac{n}{l}}=0 \\\\\boxed{\red{\bf\longmapsto \sqrt{\dfrac{p}{q}}+ \sqrt{\dfrac{q}{p}} = - \sqrt{\dfrac{n}{l}}}} [/tex]
a sum of money put out at compund interest in increased by Rs.180 at the end of first year and by Rs. 188.10 at the end of second year. find out the sum and rate of interest
Answer:
This is the answer. All the best
5. The cone shown below has a slant height of 15 centimeters and a height of 12
centimeters.
15 cm
12 cm
What is the volume of the cone?
Round your answer to the nearest tenth. Do not include the cm3.
1017.9
Answer:
the answer is A
Step-by-step explanation:
The measure of ZJLM is 140°. The measure of ZJKL is 75°.
What is the measure of ZKJL?
Enter your answer in the box,
mZKJL =
Answer:
65°
Step-by-step explanation:
m∠KJL = 65°
Which set of values will make the following inequality TRUE?
2n + 6 < -12
Answer:
n < -9
Step-by-step explanation:
Answer:
n < -9
Step-by-step explanation:
2n +6 < - 12
2n < -18
n < -9
Joe takes 6 hours to water the plants in his garden. When Joe works with his brother Jack, they take 4 hours
to water the plants in the garden. How long (in hour) would it take jack alone to water the plants in the
garden?
Answer:
2hours
Step-by-step explanation:
GCF And LCM of 24, 36, 45
Answer:
Step-by-step explanation:
First lets prime factorize each number
24 = 2 x 2 x 2 x 3
36 = 2 x 2 x 3 x 3
45 = 3 x 3 x 5
GCF = 3 (3 is the only common prime number factor in the 3 numbers)
LCM = 2 x 2 x 2 x 3 x 3 x 5
= 24 x 3 x 5
= 72 x 5
= 360
Happy to help :)
At the Burger Hut, 4 burgers and 3 drinks costs $23.25. 2 burgers and 4 drinks cost $16.00. How much does one burger cost?
Answer:
Tell me if im wrong but i think it is $2.6 for a burger. Im might be wrong though
Step-by-step explanation:
Find the measure of the inscribed angle indicated
Answer:
77°
Step-by-step explanation:
there's a rule, look it up
I GIVEEEEE BRAIMLILSTER
Answer:
[tex]\boxed{\boxed{\pink{\bf \leadsto It \ will \ take \ 5 hours \ to \ travel \ 300 \ miles. }}}[/tex]
Step-by-step explanation:According to Question , a plane travels 120 miles in 2 hours. So here we will use unitary method .
[tex]\bf\implies If \ it \ covers \ 120 \ miles \ in \ 2 \ hours \\\\\bf\implies Then \ one \ mile \ will \ be \ covered \ in \ \dfrac{120}{2} hrs \\\\\bf\implies Hence \ 300 \ miles \ will \ be \ covered \ in \ \dfrac{2}{120}\times 300 hrs = \red{5 \ hours } [/tex]
Hence it will cover 300 miles in 5 hours .Here it was a case of direct proportion in which if two things are directly proportional to each other. If one thing thing increases then the value of second also increases. Here if the time increases then the distance also increases