Multiply the amount of the discount by pairs of shoes:
21.75 x 7 = 152.25
Add that to the total she spent:
152.25 + 654.50 = 806.75
Divide the total by pairs of shoes:
806.75/7 = $115.25
The answer is C. $115.25
A minibus sets off at 7.30 am and arrives
at its destination at 11.45 am.
How long did the journey take?
Answer:
4 hours and 15 minutes
Step-by-step explanation:
Help me please I will give point to all
Answer:
try A if wrong try D
Step-by-step explanation:
this shold work
A trapezoid has a base of 5cm, a height of 4cm. What is the area?
Answer:
area = 16 cm²
Step-by-step explanation:
area of rectangle = 3x4 = 12
area of triangle = 2x4x0.5 = 4
12 + 4 = 16 cm²
another way is :
1/2(b1+b2)(h) = area
1/2(3+5)(4) = 16 cm²
HEPL A BROTHER OUT PLS 18 POINTS
Answer:
She didn't put the negitive in the 2. the 2 bottom boxes should be '-8x' & '-6' which in the end simplyfis to 4x² - 5x - 6
Step-by-step explanation:
Marcos has 15 coins in nickels and quarters. He had 3 more quarters than
nickels. How many nickels and quarter does he have?
The inverse of G(x) is a function.
A. True
. B. False
Answer:
The answer of this question is FALSE.
What is the measure of CED?
The measure of CED is p degree. By AA rule of similarity, Corresponding angles of similar triangles are same. Therefore the measure of CED is p degree.
PLEASE MARK BRAINLIST
989.5 rounded to the nearest whole number
Answer:
990
Step-by-step explanation:
there is none
In a class of 40 students, the number of girls is 10 more than the number of boys. We have to find the number of girls and the number of boys in the class.
Let’s represent the number of girls by g, and the number of boys by b. Write the pair of linear equations you will get in g and b :
Answer:
b=15 g=25
Step-by-step explanation:
lets translate that story problem to mathematics equations
the problem told that no. of girls are 10 more than no of boys so this will =
g=b+10
then in class there are 40 students that means
g+b=40
now we have to equations with two variables then we should substitute
(b+10)+b=40
lets remove the brackets
2b+10=40 subtract 10 from both sides
2b=30 now divide both by 2
b=15 so g=25 after you write the equation once again with the new proof or number
What is the reciprocal of 56/87?
Answer:
87/448
Step-by-step explanation:
50! POINTS! HELP QUICK!
Which of the following is the equation for the graph shown?
y squared over 4 minus x squared over 12 equals 1
y squared over 16 minus x squared over 12 equals 1
x squared over 4 minus y squared over 12 equals 1
x squared over 16 minus y squared over 12 equals 1
50 points!
A beetle was running along a number line...The the bug ran from 13 to 57. What distance did it cover?If it took the bug 5 seconds, what was its average speed?
Answer:
8.8
Step-by-step explanation:
57-13=44
so the distance is 44 considering that it's on a number line.
Average speed = distance ÷ Time
44÷5=8.8
A fair die is a cube with number 1 through 6 on the sides, represented as painted spots. If a fair die is rolled, what is the probability of number 6 landing face up?
Answer:
The First Part is A. 1/6
The Second Part is 1
The Third Part is B. 3
And The Fourth Part is B. Different
Step-by-step explanation:
Just took it. Edg 2021. Hope this helps :) (Da smiley is George, George says hi)
The probability of number 6 landing face up is 1/6.
What is Probability?Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.
The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.
The degree to which something is likely to happen is basically what probability means.
Given:
We have roll a die with number 1 to 6.
So, the possible outcome
{1, 2, 3, 4, 5, 6}
Then, the probability of number 6 landing face up
= 1 / 6
Hence, the probability is 1/6.
Learn more about probability here:
https://brainly.com/question/30034780
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Mrs. Via needs to buy
grass seed for her yard. She drew a diagram
of her yard. Each square represents 1 square
yard. Five pounds of seed is enough to plant
100 square yards of grass. Grass seed is sold in
2-pound bags. How many bags of grass seed
does Mrs. Via need?
Answer:
Step-by-step explanation:
Via needs 2 1/2 bags of grass seed
The number of bags of grass seed that Amanda should use to spread her yard is 16.65 bags, meaning she needs to buy not more than 17 bags, using mathematical operations.
What are mathematical operations?The basic mathematical operations we use are subtraction, addition, division, and multiplication.
In this situation, we use the division operation.
The division operation involves four parts:
The dividend (numerator or the number being divided).
The divisor (denominator or the number dividing).
The quotient (the result of the division operation).
The equal symbol (that shows that two values are equal).
The area of the yard = 4,995 ft²
1 yard = 3 feet
Area of the yard = 1,665 square yards(4,995/3)
The number of bags per 100 square yards = 1 bag
For 1,665 square, the number of bags = 16.65 bags (1,665 ÷ 100)
Thus, Amanda requires 16.65 bags of the grass seed for her yard.
Learn more about mathematical operations at brainly.com/question/20628271
#SPJ2
complete question:
Amanda is spreading new grass seed on her yard. The area of her yard is 4,995 square feet. The instructions on the bags of grass seed say that one bag of seed should be used for every 100 square yards. How many bags of grass seed should Amanda use?
Group of answer choices
Can you find the slope-intercept equation of each line and type the correct
code? Please remember to type in ALL CAPS with no spaces.
主
Answer:
DIBF
Step-by-step explanation:
DIBF
What is the prime factorization of 120
Will someone help me please! Math Isn’t my thing at all
Answer:
FCB, I think.
Step-by-step explanation:
2 angles are supplementary when they add up to 180°
What is the greatest common factor of all the terms: 6m and 18
Answer: 6
Step-by-step explanation:
10=2x+12
What’s the steps
Answer: i got 10
Step-by-step explanation:
what ud o is 2x+12 let me see
Help Please!!!!!!!!!!!!
Graph x>4.
Answer:
graph
Step-by-step explanation:
x2y when x = - 3/4 and y = 8/15
Answer:
-4/5
Step-by-step explanation:
x2y
(-3/4)(2)(8/15)
(-3/2)(8/15)
-4/5
A fair die, with its faces numbered from 1 to 6, is one in which each number is equally likely to land face up when the die is rolled. On a fair die, the probability that the number 6 will land face up is 16. A group of students wanted to investigate a claim about manipulating a fair die so that it favors one outcome. The claim states that if a fair die is put into an oven and baked at 200°F for 10 minutes, the inside of the die will begin to melt. When the die cools, the inside will be solid again, but with more weight toward the bottom. This shift in weight will cause the face that was up when the die cooled to land up more often that the other faces.
The students obtained a fair die and baked it according to the preceding directions. The die cooled with the number 6 face up. After the die cooled, they rolled the die 200 times, and the number 6 landed face up 43 times. Let p represent the population proportion of times the number 6 will land face up on the baked die if the die could be rolled an infinite number of times.
(a) Clarke, one of the students, constructed a 95 percent confidence interval for p as 0.215±0.057. Does the interval provide convincing statistical evidence that the number 6 will land face up more often on the baked die than on a fair die? Explain your reasoning.
(b) Aurelia, another student, suggested they conduct a significance test to investigate the claim. She tested the hypotheses H0:p=16 versus Ha:p>16 at the significance level of α=0.05. She obtained a test statistic of 1.83 with a p-value of 0.033. Do the results of the significance test agree with the results of Clarke’s confidence interval in part (a)? Explain your reasoning.
(c) Joachim, a third student, noted that the confidence interval in part (a) gives plausible values of the parameter as an interval between two values. He suggested that they develop a one-sided confidence interval because they were only concerned with whether the number 6 was landing face up more often than expected, not less often. The one sided-interval will determine a value L such that all plausible values of p are greater than L. The formula for L is L=pˆ+z∗pˆ(1−pˆ)n−−−−−√.
(i) Determine the values of z∗ needed to create the one-sided 95 percent confidence interval. Then calculate the value of L.
(ii) Do the results of Joachim’s one-sided confidence interval agree with results of Aurelia’s significance test in part (b)? Explain your reasoning.
Answer:
Kindly check explanation
Step-by-step explanation:
pˆ = 43 / 200 = 0.215
A.)
The confidence interval obtained :
0.215 ± 0.057 = (0.158 ; 0.272)
Since, 0.215 is within the confidence interval, we can conclude that, dice will lie face up on baked die more often than fair dice.
B.)
H0:p=16 versus Ha:p>16
Decision :
Reject H0 ; if Pvalue < α
Pvalue = 0.033 ; α = 0.05
0.033 < 0.05 ; we reject H0
HENCE, there is significant evidence to conclude that the proportion of face landing up on a baked dice is greater than 16. HENCE, it agrees with our conclusion in (1).
C.)
L=pˆ+z∗√pˆ(1−pˆ)n
Z critical for a one sided 95% confidence interval is 1.64
pˆ = 0.215
L = 0.215 + 1.64 * √(0.215*0.785) / 200
L = 0.215 + (1.64 * 0.1299134)
L = 0.215 + 0.213057976
L = 0.428
(-∞, 0.428)
Which of the following is the graph of F(x) =-1/2x'4?
Answer:
A
Step-by-step explanation:
f(x) = -1/2x^4
Because x^4 is being multiplied n=by a negative number, the parabola will face down. That means it is between a and b. To figure out which graph it is, I look at points I could compare.
In graph A, when x=1, y < 1. In graph B, when x=1, y>1.
If i plug x= 1 into f(x), I get:
f(1) = -1/2(1)^4
f(1)=-1/2(1)
f(1)=-1/2
Because f(1) < 1, it is graph A.
The ratio of the number of apples to oranges is 5:4. If there is a total of 135 apples and oranges, how many apples are there?
Answer:
The number of appleis 108
Help! I need to answer this on edge
your answer will be A
The function y=3x is growing slower than y=3^x
Step-by-step explanation:
hope it helps you
have a great day!!
help me I'm really swamped
{H,o,n,l,u}
Just take away all the duplicate letters and voila. funny that i did that question yesterday.
TThe Education Trust publishes data on U.S. colleges and universities. Six-year graduation rates and student-related expenditures per full-time student for 2007 were reported for the seven primarily undergraduate public universities in California with enrollments between 10,000 and 20,000. Suppose that a 90% confidence interval for the prediction of student expenditures at a university with a graduation rate of 40% was (5,304, 8,686).
Required:
a. Determine the point estimate for the prediction of student expenditures at a university with a graduation rate of 40%.
b. Calculate the margin of error.
c. Calculate the standard error of the prediction of student expenditures at a university with a graduation rate of 40%.
Answer:
a) The point estimate is 6995.
b) The margin of error is of 1691.
c) The standard error is of 1000
Step-by-step explanation:
a. Determine the point estimate for the prediction of student expenditures at a university with a graduation rate of 40%.
The point estimate is the mean of the two bounds of the confidence interval. So
[tex]P = \frac{5304 + 8686}{2} = 6955[/tex]
The point estimate is 6995.
b. Calculate the margin of error.
The margin of error is the difference between the bounds and the point estimate. So
M = 8686 - 6995 = 6995 - 5304 = 1691
The margin of error is of 1691.
c. Calculate the standard error of the prediction of student expenditures at a university with a graduation rate of 40%.
Now I have to expand a bit into the confidence interval.
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1 - 0.9}{2} = 0.05[/tex]
Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].
That is z with a pvalue of [tex]1 - 0.05 = 0.95[/tex], so Z = 1.645.
The margin of error is:
[tex]M = zs[/tex]
In which s is the margin of error.
We have that M = 1691. So
[tex]M = zs[/tex]
[tex]s = \frac{M}{z} = \frac{1645}{1.645} = 1000[/tex]
The standard error is of 1000
-x+3y=-1 x-3y=1
one solution, no solution, or infinitely many solutions
PLEASE HELP
Answer:
infinitely many solutions
Step-by-step explanation:
-x + 3y= -1
x - 3y =1
0=0
identity solution
what is the name of the polynomial 7x+1 ?
Answer:
binomial
Step-by-step explanation:
Which side length is labeled correctly?
A 3cm
B 4cm
C 5cm
D None are correctly labeled
Answer:
Step-by-step explanation:
3 cm