Answer:
10$
Step-by-step explanation:
For how many days, x, can Michelle make a $2 donation if she wants to make a donation of $12 total?
Answer:
6
Step-by-step explanation:
12/2=6
Find the volume of the figure of 7 inches, 21 inches and 15 inches.
Answer:
2,205 cubic inches
Step-by-step explanation:
10 less than a number K equals five
What’s the equation???
Answer: 10 - k = 5
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
I hope this helps, and enjoy the rest of your day!
What’s the answer to this?
Answer:
I believe your answer is minimum
Question 1 The solution to 5 - 3x > 35 is either r > -10 or -10 > 2. Which solution is correct? Explain how you know. Edit View Insert Format Format Tools Table 12pt Paragraph BI U AY 2 T?
Answer:
x < -10
Step-by-step explanation:
Given the inequality 5 - 3x > 35
Subtract 5 from both sides
5 - 3x - 5> 35 -5
-3x > 30
Divide both sides by -3
-3x/-3 < 30/-3
x < -10 (note the change is sign)
hence the correct solution is x < -10
If you get this you will get 30 points 2•2•2•2=
Answer:
16
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
2×2=4 4×2=8 8×2=16 you multiply each answer by 2
Question 9 (5 points) Factor 98zy2 – 50z. O A) 298y + 25)(y + 2) B) 227y - 5)(7y - 5) C) 227y + 5)7y - 5) D) 249y - 5)(y + 5)
Answer:
i think it might be D
Step-by-step explanation:
..
Lucy had $72 which is 9 times more than Xavier had
Answer:
multiply 72 times 9
Step-by-step explanation: 648
Answer:
Xavier had $8
Step-by-step explanation:
72/9 = 8
math help>.< plssssssssssssssss
Answer:
C=12.5
Step-by-step explanation:
you do 4x2 for 8 then you do 100/8 getting you 12.5
Answer:
1) m = 5
2) c = 12.5
Step-by-step explanation:
1) T = 2m + 30
T = 40
substitute for T
2m + 30 = 40
2m = 10
m = 5
2) A = 4bc
A = 100
b = 2
100 = 4(2)c
100 = 8c
c = 12.5
after one side of a square was enlarged by 3 inches and the other side was enlarged by 3 inches, the area of the shape was doubled. what was the side of the square.
Answer:
The side of original square was 7.24 inches
Step-by-step explanation:
(x+3)(x+3) =2(x)(x)
x² + 6x + 9 = 2x²
reduce:
x² - 6x - 9 = 0
(x + 1.24)(x - 7.24) = 0
x = 7.24
Vine tube that carries blood to and from the cells
Answer:
these are called veins
Step-by-step explanation:
I don't know if that's the answer you're looking for but have a nice day
Kirsten has an area of 70 square feet for a flower garden. She plants 5 varieties of flowers
equally in her garden. Which ratio shows the square feet per flower type?
Round 1,405 to the nearest thousand.
Answer:
1,000
Step-by-step explanation:
1,405 is closer to which thousand: 1,000 or 2,000?
1,000. So thats the answer!
Its number 1. 10 Points to answer
Answer:
21=y3
Step-by-step explanation:
I hope this helps you. let me know if I am wrong
a biology teacher wants to know which dissection his students liked best this semester, so he randomly selects eights students from each of his 5 classes to participate in a survey.
a. What is the sample in this situation?
b. What is the population?
THIS IS NOT MULTIPLE CHOICE
Answers:
a) The 40 students selected to participate in the survey (8*5 = 40).b) The population is the set of all students in his five classes combined.===========================================================
Explanation:
The teacher wants to know something about his students, so he's only focused on them and no one else. The teacher has 5 classes. Let's say each class has 40 students. That would mean 40*5 = 200 students total are taught by this bio teacher, and these 200 students make up the population. We're not considering any other student in this school since they are not in this teacher's class.
Once the population is well formed and well defined, the sample is drawn from the population. Specifically, the teacher is randomly selecting 8 people from each class. The teacher is using the stratified sample technique. Each class is a stratum, ie, a separate group. The plural of stratum is strata. Because there are 5 classes, and 8 people selected per class, this leads to an overall sample of 8*5 = 40 students. Those 40 students chosen randomly fairly represent the 200 students in the population. Therefore, this process is fairly unbiased.
Be sure not to mix stratified sampling with cluster sampling. Cluster sampling is not performed here because that would mean the teacher randomly selects say 2 classrooms (ie clusters) and samples everyone in each cluster selected. Instead, the teacher is only picking representatives from each class, as if those people were elected to office. As you can probably guess, cluster sampling can be expensive in terms of time and money, so if you need to apply a cluster sample, then it's best to make the clusters as small as possible but also make sure each cluster is reflective of the population.
Fatimah wants to estimate the proportion of students at her school who ate breakfast every day last week. She
takes an SRS of 80 of the 1000 students at her school and finds that 20 of those sampled ate breakfast every
day last week.
Based on this sample, which of the following is a 95% confidence interval for the proportion of all students at
the school who ate breakfast every day last week?
Choose 1 answer:
20+ 0.080
20 + 0.095
0.25 +0.080
Answer:
Answer:
0.25±0.095
Step-by-step explanation:
P^= 20/80=.25
sample size n= 80
z*=1.96
p^± sqr(p^(1-p^)/n)
=0.095
Step-by-step explanation:
The 95% confidence interval for the proportion of all students at the school that ate breakfast every day last week is 0.25 +0.080.
Given thatFatimah wants to estimate the proportion of students at her school who ate breakfast every day last week.
She takes an SRS of 80 of the 1000 students at her school and finds that 20 of those sampled ate breakfast every day last week.
We have to determineBased on this sample, which of the following is a 95% confidence interval for the proportion of all students at the school that ate breakfast every day last week?
According to the questionShe takes an SRS of 80 of the 1000 students at her school and finds that 20 of those sampled ate breakfast every day last week.
[tex]\rm P = \dfrac{Sample \ space}{Total \ SRS}\\ \\ P = \dfrac{20}{80}\\ \\ P = \dfrac{1}{4}\\ \\ P = 0.25[/tex]
Therefore,
The 95% confidence interval for the proportion of all students at the school that ate breakfast every day last week is
=[tex] = 1.96 \times \sqrt{\dfrac{0.25(1-0.25)}{80}}\\ \\ = 1.96 \times \sqrt{\dfrac{0.25\times 0.75}{80}}\\\\ = 1.96 \times 0.40\\\\ = 0.080[/tex]
Hence, The 95% confidence interval for the proportion of all students at the school that ate breakfast every day last week is 0.25 +0.080.
To know more about Confidence intervals click the link given below.
https://brainly.com/question/15682003
Kristen worked 39 hours in 6 days
If Kristen worked the same number of hours each day, how many hours did she work each day?
Write an equation to show how you solved the problem.
Answer: 6 hours and 30 min. or 6.5
Step-by-step explanation: divide 39 by 6 you get 6.5 then (.5) is actually going to be half an hour because half an hour is just 30 minutes
The number of hours Kristen worked each day is 6.5 hours.
What does division mean?
Division is the process of determining the quotient of a number by grouping the number into equal parts using another number. The sign used to denote division is ÷. Division is one of the basic mathematical operations.
How many hours each day did Kristen work?In order to determine this value, divide 39 by 6.
39 / 6 = 6.5 hours
To learn more about division, please check: https://brainly.com/question/13281206
what is the direct of variation for y=5x (PLEASE HELP)
Answer:
Hey
Step-by-step explanation:
Answer:
y=40
Plug in the 8 for the value of x so 5×8=40
Step-by-step explanation:
can anyone help pls ??
1) A rectangular storage container with an open top is to have a volume of 15 m 3 . The length of its base is four times the width. [2pts] a. Write an equation for the volume of the container in terms of the height (h) and the width (w). [3pts] b. Write an equation for the surface area of the container in terms of w and h. [2pts] c. Re-write the equation from part (b) so that it gives the surface area in terms of w only. [3 pts] d. Material for the base costs $10 per square meter. Material for the sides costs $6 per square meter. Write an equation for the cost of the materials for the container.
9514 1404 393
Answer:
a) V = 4w²h
b) SA = 4w² +10wh
c) SA = 4w² +37.5/w
d) C = 40w² +225/w
Step-by-step explanation:
The relevant formulas are ...
V = LWH
base area = LW
lateral area = H(2(L+W))
__
a) The length is 4 times the width, so the volume is ...
V = (4w)(w)(h)
V = 4w²h
__
b) The total surface area is the sum of the base area and the lateral area:
SA = base area + lateral area
SA = (4w)(w) + 2h(4w +w)
SA = 4w² +10wh
__
c) The volume is 15 m³, so the height in meters in terms of the width in meters is ...
15 = 4w²h
h = 15/(4w²)
Then the surface area is ...
SA = 4w² +10w(15/(4w²))
SA = 4w² +37.5/w
__
d) The equation we have for surface area has one term for base area and a second term for lateral area. We can apply the cost factors to those terms to get the cost of materials:
C = 10(4w²) +6(37.5/w)
C = 40w² +225/w
A zoo-keeper has 9 gorillas and 12 monkeys. He wants to keep the ratio of gorillas to monkeys the same. If the zoo-keeper buys 3 more gorillas, how many more monkeys will he need to buy?
Answer: He would have to buy no more monkeys because if he buys 3 more gorillas the ratio would be equal
Answer:
12:15
Step-by-step explanation:
9:12
9+3:12+3
12:15
The following data shows the quarterly profit (in thousands of dollars) made by a particular company in the past 3 years.
Year Quarter Profit ($1000s)
1 1 45
1 2 51
1 3 72
1 4 50
2 1 49
2 2 45
2 3 79
2 4 54
3 1 42
3 2 58
3 3 70
3 4 56
Required:
a. Construct a time series plot. What type of pattern exists in the data?
b. Develop a three-period moving average for this time series. Compute MSE and a forecast of profit (in $1000s) for the next quarter.
Answer:
208.82 ; 61.33
Step-by-step explanation:
Given the data:
Year Quarter Profit ($1000s)
1 1 45
1 2 51
1 3 72
1 4 50
2 1 49
2 2 45
2 3 79
2 4 54
3 1 42
3 2 58
3 3 70
3 4 56
The 3 period moving average :
Yr Qtr Profit ($1000s)Pt ____ Ft ____ e=(PT-Ft)²
1 _ 1 ___45 __
1 _ 2 __ 51 __
1 _ 3 __ 72 __
1 _ 4 __ 50 ______________56 ____ 36
2 _ 1 __ 49 ______________57.67__ 75.17
2 _ 2__ 45 ______________57 ____ 144
2 _ 3__ 79 ______________48 ____961
2 _ 4__ 54 ______________57.67 _ 13.47
3 _ 1__ 42 ______________59.33__300.33
3 _2 __ 58 ______________58.33__ 0.11
3 _ 3__ 70 ______________51.33__ 348.57
3 _ 4 __56 ______________56.67__0.45
MSE = Σ(Pt - Ft)² ÷ n
MSE = (36+75.17+144+961+13.47+300.33+0.11+348.57+0.75) ÷ 9
= 208.82
Forecast for next quarter :
(58 + 70 + 56) / 3 = 184 /3 = 61.33
help me plzzzzzzzzzzzzzzz
Answer:b c d c
Step-by-step explanation:
Answer:
6
Step-by-step explanation:43-7**78(1-*8)
%140 ı 28 olan sayı kaçtır ?
Answer:
Yes
Step-by-step explanation:
Add. Write the sum in simplest form.
1/2 + 1/8 =
Answer:
5/8
Step-by-step explanation:
1/2 converts to 4/8 so when you add another 1/8 to that you get 5/8.
This shouldn’t be too hard so help if you can please!
Answer:
4.50 hot dig
8.50 hsmbuger
How do you find the fraction between 9/5 and 10/5?
Answer:
Step-by-step explanation:
to do something like this, you could just multiply both sides by 2. So now, you have 18/10, and 20/10. The one in between that would be 19/10
The numbers of points scored in each basketball game are 49, 36, 61, 64, 39, 41, 43, and 39.
In what percent of the games were at least 55 points scored?
Answer:
In 25% of the games at least 55 points were scored.
Step-by-step explanation:
Percentage:
Number of desired outcomes multiplied by 100 and divided by the number of total outcomes.
In this question:
8 total games
In 2 at least 55 were scores.
100*2/8 = 100/4 = 25%
In 25% of the games at least 55 points were scored.
Roger and Mary have an online account for buying movies. Roger's account balance is -$25
and Mary's is -$10. Who owes more money?
Answer:
Rodgers simply because owing 25 dollars is more than 10
Pls help.....................
Answer:
x<-1
Step-by-step explanation: