Answer:
Probability of selecting a grape juice pop from the first box: 25%
Probability of not selecting a cherry juice pop from the second box: 75%
Probability of them both occurring: 18.75%
Step-by-step explanation:
Select all statements that show correct reasoning for finding 12 ÷ 3/8.
Multiply 12 by 8, then divide by 3.
Multiply 12 by 3, then divide by 8.
Multiply 12 by 1/8, then multiply by 3.
Multiply 3 by 8, then divide by 12.
Write an algebraic expression for the situation.
7 times the sum of y and 1/3
Answer:
7(y + 1/3)
Step-by-step explanation:
7 times the sum of y and 1/3
7 * (y + 1/3)
7 * (y + 1/3)
7(y + 1/3)
Richard drove to the east at 2 kilometers, then 1 kilometer south, and 1 kilometer west to reach home.
Answer:
answer 4 kilometer
Step-by-step explanation:
2 + 1 + 1 = 4
When a researcher asks respondents for the names or identities of others like themselves who might qualify to take part in the survey, they are using what type of sampling method
Answer:
Chain referral sampling
Step-by-step explanation:
Chain referral sampling is also known as snowball sampling. In this form of sampling, the samples are collected from the referrals given by the existing samples. The samples are collected and the research is conducted respectively. This method is used in the business marketing also. The places where the people are not known by the company, the method of chain referrals are made and the samples are collected.
PLS HELP!!
Mr. Holmgren is the band director at school. He asks
students to record how often they practiced the week
before a concert. The dot plot shows the data he has
recorded.
Time Spent Practicing
...
6
2 3
5
Number of days
What unit of measure is used in the study?
A. Number of students
O B. Weeks
O C. Number of observations
O D. Days
PREVIOUS
Answer:
Days
Step-by-step explanation:
I'd say Days
Which equation can be used to find the volume of this solid?
V = 3 times 5 times 4
V = 3 + 5 + 4
V = 5 times 4
V = 3 times 5
Answer:
You would use V=3 times 5 times 4
First you would multipy 5 times 4 then when you get that answer you would multiply the 3.
What is X 7x - 3 = 11
weeee
weeee
weeee
naaaa jk this is the real question
ANYONE WAN NA HAVE SOME "FUN"???
Answer:
x=2
Step-by-step explanation:
7x - 3 = 11
Add 3 to each side
7x - 3+3 = 11+3
7x = 14
Divide by 7
7x/7 = 14/7
x = 2
[tex]\boxed{\bold{ X=2 }}[/tex]
Full solution7x-3=11
now we have to add 3 in both sides
we get that,
7x-3+3=11+37x=14now divide 7 in both sides
we get that,
7x/7=14/7x=2Cos 0 =
I need this as fast as I can please
Step-by-step explanation:
I hope you understand what I wrote
Answer:
cos=Adjacent / hypotenuse
[tex] \cos = \frac{35}{37} [/tex]
choose B.
What’s -9/25 as a decimal
PLEASE HELP NOW IM FAILING MATH
Answer:
x = 89°
Explanation:
The angles inside a triangle will always add up to 180°
49 + 42 = 91
180 - 91 = 89°
Leticia has a small paper weight in the shape of a rectangular prism.
The dimensions of the paper weight are shown. What is the volume of
the paper weight?
The answer is 58.4375
l*w*h is how you calculate any rectangular prism, 5*2 3/4*4 1/4 is the volume of your triangle. Hope this helps!
What is its equation
slope-intercept form ?
PLEASE HELP! urgent! Write the equation of a line in a slope-intercept form and standard form
Answer:
[tex]y = \frac{3}{4}x -3[/tex] --- Slope intercept
[tex]4y - 3x =- 12[/tex] --- Standard form
Step-by-step explanation:
Given
The attached linear graph
Required
The equation
Select any two points on the line
[tex](x_1,y_1) = (0,-3)[/tex]
[tex](x_2,y_2) = (4,0)[/tex]
Next, calculate the slope (m)
[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
So, we have:
[tex]m = \frac{0 --3}{4 - 0}[/tex]
[tex]m = \frac{3}{4}[/tex]
The slope intercept is then calculated using:
[tex]y = m(x - x_1) + y_1[/tex]
So, we have:
[tex]y = \frac{3}{4}(x - 0) -3[/tex]
[tex]y = \frac{3}{4}(x) -3[/tex]
[tex]y = \frac{3}{4}x -3[/tex]
Multiply through bu 4
[tex]4y = 3x - 12[/tex]
Subtract 3x from both sides
[tex]4y - 3x =- 12[/tex] --- Standard form
What is the area of this triangel
25 m
A
24.11
A 150 M
B 225 99
C 2900
D. 2901
PLEASE HELP
Shirts are 5% off. The original price of one shirt is $15. What is the total cost, in dollars, of a shirt at the sale price, including a 10% sales tax
Answer:
$15.75
Step-by-step explanation:
[tex]\frac{y}{15} :\frac{5}{100}[/tex]
y × 100 = 5 × 15
100y = 75
100y ÷ 100 = 75 ÷ 100
y = 0.75
$15 - $0.75
$14.25
[tex]\frac{y}{15} :\frac{10}{100}[/tex]
y × 100 = 10 × 15
100y = 150
100y ÷ 100 = 150 ÷ 100
y = 1.5
$14.25 + $1.50
$15.75
Below is the output from a study to see whether there is evidence of a difference in the mean amounts of time required to reach a customer service representative between two hotels. Assume that the population variances in the amount of time for the two hotels are not equal. What is the smallest level of significance at which the null hypothesis will still not be rejected?
Hotel 1 Hotel 2
Mean 2.214 2.0115
Variance 2.951657 3.57855
Observations 20 20
Hypothesized Mean Difference 0
df 38
t Stat 0.354386
P(T<=t) one-tail 0.362504
t Critical one-tail 1.685953
P(T<=t) two-tail 0.725009
t Critical two-tail 2.024394
Required:
a. State the null and alternative hypotheses for testing if there is evidence of a difference in the variabilities of the amount of time required to reach a customer service representative between the two hotels.
b. What is the value of the test statistic for testing if there is evidence of a difference in the variabilities of the amount of time required to reach a customer service representative between the two hotels? Explain how you obtain your answer.
c. What is the critical value for testing if there is evidence of a difference in the variabilities of the amount of time required to reach a customer service representative between the two hotels at the 5% level of significance?
Solution :
a). [tex]$\text{Set up hypothesis}$[/tex]
[tex]$\text{Null hypothesis}$[/tex] : There is no significance between them.
[tex]$H_0:\mu_1=\mu_2$[/tex]
[tex]$\text{Alternate hypothesis}$[/tex] : There is significance between them.
[tex]$H_1:\mu_1!=\mu_2$[/tex]
b). Test statics
[tex]$X(\text{mean}) = 2.214$[/tex]
Standard deviation [tex]$(s.d1)=1.718; \text{Number}(n_1)=20$[/tex]
[tex]$Y(\text{mean})=2.0115$[/tex]
Standard deviation [tex]$(s.d2)=1.8917; \text{Number}(n_2)=20$[/tex]
We use the test statics :
[tex]$t=\frac{X-Y}{\sqrt{\frac{s.d1^2}{n_1}+\frac{s.d2^2}{n_2}}}$[/tex]
[tex]$t_0=\frac{2.214-2.0115}{\sqrt{\frac{2.95152}{20}+\frac{3.57853}{20}}}$[/tex]
[tex]$t_0=0.35$[/tex]
[tex]$|t_0|=0.35$[/tex]
c. The critical value of |t| with minimum [tex]$(n_1-1)$[/tex] , i.e. 19 d.f is [tex]$2.093$[/tex]
We got [tex]$|t_0|$[/tex] = 0.35439 and |t| = 2.093
Find the surface area of
8 m
14 m
18 m
Eve surveys the students in her classroom to find out how much time they spent doing their homework last night. The results are plotted in the line plot below. The measurements are rounded to the nearest \dfrac{1}{4}
4
1
start fraction, 1, divided by, 4, end fraction of an hour
Answer: The answer is 5/4 :)
Answer:
5/4 or 1 1/4
Step-by-step explanation:
khan academy
Please look at the image
Step-by-step explanation:
m∠A = 70°
m∠B = 30°
m∠C = 80°
Sum of all three angles = 70° + 30° + 80° = 180°
Hope it helps....!
For each of the regions D in R^2 below, fill in the blank so that the statements are true:
A continuous function on D= {(x,y) ∈ R^2 | 2x^4+6y^2 >= 152} __________ have an absolute maximum.
a. must
b. might or might not
c. must not
Answer:
b. might or might not
Step-by-step explanation:
Theorem:
If f is a continuous function in a bounded interval, it must have an absolute maximum.
In this question:
The interval is 2x^4+6y^2 >= 152, which goes to infinite, meaning it is not bounded, and so the function might or might not have an absolute maximum, and the correct answer is given by option b.
Answer:
b. might or might not
Step-by-step explanation:
For each of the regions D in R^2 below, fill in the blank so that the statements are true: might or might not
The revenue of the company is given by the equation R = x (1000 – 4x), where R is the revenue of the company in dollars when thy sell x units of a product. How many units of the product should they sell to make a revenue of $60,000
Answer:
100 or 150 units of the product.
Step-by-step explanation:
R = x(1000-4x)
What is the value of x if R = 60,000?
x(1000-4x) = 60000
-4x^2 + 1000x = 60000
x^2 - 250x = -15000
x^2 - 250x + 15000 = 0
Factorize:
(x-100)(x-150) = 0
x-100 = 0 V x-150 = 0
x = 100 V x = 150
Find the area of the shape.
Answer:
78.5 un²
Step-by-step explanation:
A = π · r²
π · 10²
314 un²
314 un² ÷ 4
78.5 un²
there are between 24 and 40 students in class
the ratio of boys to girls is 4:7
how many students are in the class?
9514 1404 393
Answer:
33
Step-by-step explanation:
The total number of ratio units is 4+7 = 11. If each one stands for an integer number of students, that number is a multiple of 11 between 24 and 40. The only such number is 3×11 = 33.
There are 33 students in the class.
_____
12 are boys, 21 are girls.
For i^2 =-1, (3-i)^2 = ?
A. 8
B. 10
C. 8-6i
D. 8 + 6i
E. 10-6i
if the original price is $50 and the final price is $60, the percent increase in price is
Answer:10
Step-by-step explanation:
60-50
Find the volume of a cone with a height of 13 cm and a radius of 5 cm.
Answer:
V≈340.34
Step-by-step explanation:
V=πr2h
3=π·52·13
3≈340.3392
What is 26.509 written in Expanded Form?
pls help w give a brainlest
Answer:
Step-by-step explanation:
(27m^8n^4)^(1/3)
= 27^(1/3) (m6)^(1/3)(n)^(1/3) (m^2n)^(1/3)
= 3m^2n(m^2n)^(1/3)
So the answer is the last.
The Martian monetary system uses colored beads instead of coins. A blue bead is worth 3 Martian credits, and a red bead is worth 7 Martian credits. Thus, three blue beads are worth 9 credits, and a blue and red bead together are worth 10 credits, but no combination of blue and red beads is worth 11 credits. Using Induction, prove that for all n ≥ 12, there is some combination of blue and red beads that is worth n credits. Clearly state the type of Induction you have used to prove the problem
Answer:
"a" is showing the number of blue beads
"b" represents the number of red beads in a combination
let "n" show the number of credits.
We get the following equation:
n = 3a + 7b.
Now, we want to prove that for all n ≥ 12, there is some combination of blue and red beads that is worth n credits, there are a, b in N such that:
n = 3a + 7b
Hence we will prove this by induction.
Base Cases: n = 12.
Applying the formula clearly 12 = 3*4+7*0.
n = 13
Applying the formula clearly 13 = 3*2+7*1.
n = 14.
Applying the formula clearly 14 = 3*0+7*2.
Induction Step: Assume that for all 12<=k<n there are x, y in N such that
k = 3x + 7y. We will now prove that there are a, b in N such that n = 3a + 7b.
By the induction hypothesis we know that there are x, y in N such that n-3 = 3x + 7y.
Hence n = n - 3 + 3 = 3x + 7y + 3 = 3(x + 1) + 7y, so choosing a = x + 1
and b = y we see that n = 3a + 7b.
Therefore by induction, the claim is true for all n ≥ 12
Which numbers has a sum of zero
Answer:
prob -3
Step-by-step explanation:
The number 0 is called the additive identity because when you add it to a number, the result you get is the same number. For example, 4 + 0 = 4. Any two numbers whose sum is zero, such as 3 and -3, because 3 + (-3) = 0.
Answer:The number 0 is called the additive identity because when you add it to a number, the result you get is the same number. For example, 4 + 0 = 4. Any two numbers whose sum is zero, such as 3 and -3, because 3 + (-3) = 0.
Step-by-step explanation: