Answer:
55
Step-by-step explanation:
1+2+3+4+5+6+7+8+9+10
= 1+9 + 2+8 + 3+7 + 4+6 + 10 + 5
= 10x5 + 5
= 55
Answer:
55
Step-by-step explanation:
caculator
A group of 20 students attempting a MathematicalChallenge have an average age of 11. When their teacher is included their average age is12. What is the age of the teacher?
Answer:
32.
1st get the total age of the students
x/20 = 11
x=11x20
x =220 (total age of students)
add y ( teachers age) to the equation
(220 + y)/21=12
y= 32
Answer:
32
Step-by-step explanation:
20 * 11= 220
21 * 12= 252
252-220=32
Olivia has 2 gallons and 3 quarts of vanilla ice cream and 1 gallon and 2 quarts of chocolate ice cream left over from a party What is the total number of gallons and quarts of ice cream that Olivia has left over?
Answer:
4 gallons 1 quart total ice cream
first you add the gallons and the quarts.
so, 2 gallons vanilla + 1 gallon chocolate is 3 gallons.
3 quarts vanilla + 2 quarts chocolate is 5 quarts.
4 of the 5 quarts are taken to make up another gallon.
so the answer is 4 gallons 1 quart total ice cream.
HAVE THE BEST DAY :)
Answer:
THANK YOU!!!! YOU HAVE A FANTASTIC DAY!!!!!
Step-by-step explanation:
Also I love your pfp!!!!
Answer:
THANKS!
Step-by-step explanation:
The area of the base is 56 square inches. Which of the following is the best estimate for the volume of the tent?
Answer:
what are the following??
Step-by-step explanation:
Answer:
sorry dont know
Step-by-step explanation:
can someone help me please
Answer:
i think its b
Step-by-step explanation:
Jake is 5 years older than his brother Kevin.
Kevin is k years old. Write an algebraic
expression for Jake's age.
Answer:
5+k
Step-by-step explanation:
its saying jake is 5 MORE then kevin so either add or multiply.
find the area of the triangle
Answer:
Step-by-step explanation:
You know two sides and the angle between them. Use the Law of Cosines to find the third side.
q = √(p²+r²-2pr·cosQ) ≅ 8.533 units
Use Heron's formula to find area
semi-perimeter s = (p+q+r)/2 ≅ 10.317 units
area = √(s(s-p)(s-q)(s-r)) ≅ 16.3 units²
What is the value of p in the equation
8p +2 = 4p - 102
1) 1
2) -1
3) 3
4) -3
Answer:
-26
Step-by-step explanation:
sorry but from my calculations I didn't get any of the options I got -26
What's the domain and range of this situation?
Answer:
210
Step-by-step explanation:
Answer: i think it should be 210 correct me if im
wrong
Step-by-step explanation:
I need help
5th Grade: Module 2 - Lesson 23 --if u dont know search that up
please send me picture why bc i need do a division of that and show my work please help
problem: 9152/29
Answer:
please
Step-by-step explanation:
what is the value of X and Y
Answer:
x = 2.25 y =6
Step-by-step explanation:
Its a SCALE DRAWING with a factor of 3/4. Just multiply all the lengths of the first triangle by 3/4. 12 x 3/4 = 9 8 x 3/4 = 6 3 x 3/4 = 2.25
Hope this helped! If it did, please mark brainliest! It would help me out a lot! Thanks! :D
The same survey database cited in exercise 4.3.1 (A-5) shows that 32 percent of U.S. adults indicated that they have been tested for HIV at some point in their life. Consider a simple random sample of 15 adults selected at a time. Let X be the number of adults who have been tested for HIV in the sample. For the following, find the numerical answer and describe the answer in words:
a. Three
b. Between five and nine, inclusive
c. More than five, but less than 10
d. Six or more
e. Less than five
f. Find the mean and the variance of the number of people tested for HIV in samples of size 15.
Answer:
a. P(X = 3) = 0.145736
b. P(5≤X≤9) = 0.5462
c. P(5<X<10) = 0.3332
d. P(X≥6) = 0.3393
e. P(X<5) = 0.4477
f. Mean = 4.8, Variance = 3.264
Step-by-step explanation:
Given - The same survey database cited in exercise 4.3.1 (A-5) shows
that 32 percent of U.S. adults indicated that they have been
tested for HIV at some point in their life. Consider a simple
random sample of 15 adults selected at a time. Let X be the
number of adults who have been tested for HIV in the sample.
To find - For the following, find the numerical answer and describe
the answer in words:
a. Three
b. Between five and nine, inclusive
c. More than five, but less than 10
d. Six or more
e. Less than five
f. Find the mean and the variance of the number of people
tested for HIV in samples of size 15.
Proof -
Given that , n = 15, p = 32% = 0.32
Now,
a.
P(X = 3) = binomial distribution (3, 15, 0.32, 0)
= [tex]\left(\begin{array}{ccc}15\\3\end{array}\right)(0.32)^{3}(1-0.32)^{15 - 3}[/tex]
= 455(0.032768)(0.009774)
= 0.145736
⇒P(X = 3) = 0.145736
b.
P(5≤X≤9) = P(X = 5) + P(X = 6) + P(X = 7) + P(X = 8) + P(X = 9)
= [tex]\left(\begin{array}{ccc}15\\5\end{array}\right)(0.32)^{5}(1-0.32)^{15 - 5}[/tex]+ [tex]\left(\begin{array}{ccc}15\\6\end{array}\right)(0.32)^{6}(1-0.32)^{15 - 6}[/tex] + [tex]\left(\begin{array}{ccc}15\\7\end{array}\right)(0.32)^{7}(1-0.32)^{15 - 7}[/tex] + [tex]\left(\begin{array}{ccc}15\\8\end{array}\right)(0.32)^{8}(1-0.32)^{15 - 8}[/tex]+ [tex]\left(\begin{array}{ccc}15\\9\end{array}\right)(0.32)^{9}(1-0.32)^{15 - 9}[/tex]
= 0.213 + 0.1671 + 0.1011 + 0.0476 + 0.0174
= 0.5462
⇒P(5≤X≤9) = 0.5462
c.
P(5<X<10) = + P(X = 6) + P(X = 7) + P(X = 8) + P(X = 9)
= [tex]\left(\begin{array}{ccc}15\\6\end{array}\right)(0.32)^{6}(1-0.32)^{15 - 6}[/tex] + [tex]\left(\begin{array}{ccc}15\\7\end{array}\right)(0.32)^{7}(1-0.32)^{15 - 7}[/tex] + [tex]\left(\begin{array}{ccc}15\\8\end{array}\right)(0.32)^{8}(1-0.32)^{15 - 8}[/tex]+ [tex]\left(\begin{array}{ccc}15\\9\end{array}\right)(0.32)^{9}(1-0.32)^{15 - 9}[/tex]
= 0.1671 + 0.1011 + 0.0476 + 0.0174
= 0.3332
⇒P(5<X<10) = 0.3332
d.
P(X≥6) = 1 - P(X < 6)
= 1 - P(X ≤ 5)
= 1 - binomial(5, 15, 0.32, 1)
= 1 - 0.6607
= 0.3393
⇒P(X≥6) = 0.3393
e.
P(X<5) = P(X≤4)
= binomial (4, 15, 0.32, 1)
= 0.4477
⇒P(X<5) = 0.4477
f.
Mean = np
= 15(0.32)
= 4.8
⇒Mean = 4.8
Variance = np(1-p)
= 15(0.32)(1 - 0.32)
= 4.8(0.68)
= 3.264
⇒Variance = 3.264
help plssssssssssssssssssssssssssssssssssssssssssssssssssssssss
what is the volue of j?
Answer:
23 is the answer the J is acute but it has a vary so it is even smaller than 49 so it's like subtracting 26
Answer: j=27 degrees
49+j=76 because vertical angles are always congruent. Now that we know that, we can subtract 49 from 76 which equals 27 degrees and that's your answer!
Hope this helped you!
Write an equation that you can use to solve for X.
Enter your answer in the box.
Pls help!!
Answer:
x+60=100
Step-by-step explanation:
the 100 degree angle is the same as the 60 degree and x added together.
if i earn 165 dollars in 20 hours how many would i make in 40 hourr
Answer:
330
Step-by-step explanation:
165 times 2 equals 312. This is because you're doubling the amount of money and hours.
Graph the inequality on a grid which resembles the image. 400x + 4y < 2000
Answer:
te awnser is
Step-by-step explanation:
help again lol read what i put before answering
Answer: 743
Step-by-step explanation:
It's simple, by using a calculator it's 743.
(5433/8 = 743)
Answer: 743
sorry, don’t have sketch pad!
Please find the circumference, will give brainliest!
Answer:
43.96
Step-by-step explanation:
A square notepad has sides that are 14 centimeters long. What is the notepads perimeter?
Answer:
56 cm (22.4 in)
Step-by-step explanation:
14+14+14+14=56 or 14x4=56
Can someone help me with this task please please!!!
Answer:
10,20,30=20
5,10,1520=20
Step-by-step explanation:
write
[tex] \frac{12}{25?} [/tex]
as a decimal and as a percent
For every quarter spent, Reggie receives 75 food pebbles to feed the fish at a hatchery. Reggie has thrown 600 food pebbles into the fish pools. How many quarters did Reggie spend at the hatchery?
Answer:
8
Step-by-step explanation:
find each measurement indicated. Round your answer to the nearest tenth. Part 2. Please show work
9514 1404 393
Answer:
5) 25.9°
6) 40.8°
7) 42.0°
8) 20.9°
Step-by-step explanation:
The law of sines tells you that for long side x and shorter side y, with angle X opposite side x, the measure of angle Y is ...
sin(Y)/y = sin(X)/x
sin(Y) = y/x·sin(X)
Y = arcsin(y/x·sin(X))
__
5) C = arcsin(10/15·sin(41°)) ≈ 25.9°
6) B = arcsin(7/10·sin(111°)) ≈ 40.8°
7) B = arcsin(26/36·sin(112°)) ≈ 42.0°
8) A = arcsin(14/30·sin(50°)) ≈ 20.9°
_____
For repetitive calculations, I like to let a graphing calculator or spreadsheet do them.
A flagpole is 4 meters tall. How many
centimeters tall is the flagpole?
Answer:
400 cm
Step-by-step explanation:
100 centimeters in a meter.
4 * 100 = 400
Which of the following could result in higher living costs for the homeowner that the renter doesn't have?
a. decreased property value
b. down payment
C. maintenance
d. monthly payment
Please select the best answer from the choices provided
ΟΟΟΟ
Mark this and retum
Save and Exit
Next
Submit
Answer:
MAINTENANCE
Step-by-step explanation:
Can anyone help me with my homework
Answer:
code=CEDB
Step-by-step explanation:
1: (5,-5)-C
2: (-5,5)-E
3: (-2,0)-D
4: (0,-5)-B
Answer:
CODE: CEDB
1: (5,-5)-C
2: (-5,5)-E
3: (-2,0)-D
4: (0,-5)-B
Step-by-step explanation:
hope this helped! :)
have a great day!
A rectangular balcony is 10 feet long and 4 feet wide. What is its area?
For what value of t is R(t) = D(t) true
Answer:
t=4.3
Step-by-step explanation:
t=time and 4.3 is the time when the lines intercept on the graph
hope this helped
Find the volume of the triangular prism.
PLEASE HELP!
Answer:
53.76 cm³
Step-by-step explanation:
1/2(4.8)(3.2)(7)=53.76
The picture is quite blurry. I think it's 4.8 at the base, but can't see for sure.
Pls helppp I don’t understand also if you can can you show the works pls if you can tho
Answer:
I would help but it is just black try to repost it and i will tell you what it is
Step-by-step explanation: