Thank you for the free points
1 7/8 * 3 in a fraction form
Fill in the blank.
(x+a) (x+b) = (___) (___)
Answer:
(x+a) (x+b)=x(x+b)+a(x+b)=x²+bx+ax+ab=x²+x(a+b)+ab
Step-by-step explanation:
solution
here, given,
(x+a) (x+b)
= x(x+b) +a(x+b)
=x^2+xb+ax+ab ans
hope this helps u..
Which expression is equivalent to 3 - (-8)
Answer:
The believe answerrrr is 11
Answer:
11
Step-by-step explanation:
3 - (-8)
first add the minuses together to make a + sign
then you just add up
3 + 8 = 11
2 ⅔ - 1 ¾
please explain how you got the answer!
Answer:
2 2/3 - 1 3/4 = 11/12
Step-by-step explanation:
You could convert them both to improper fractions then you would make them have common denominators so the least common denominator for the would be 12 so you would multiply them and then you would subtract them to get your answer of 11/12.
2 2/3 = 8/3 times 4 = 32/12
1 3/4 = 7/4 times 3 = 21/12
32/12 - 21/12 = 11/12
The price of a dvd is $24.00 plus 8% sales tax
Answer:
25.92
Step-by-step explanation:
A rectangular swimming pool is twice as long as it is wide. A paved border is 4 feet wide along the two longer sides and one of the shorter sides, and 8 feet wide along the other shorter side. The border and the pool have a combined area of 2046 square feet.
Let x represent the length of the shorter side of the swimming pool. Write an equation in standard form for the combined area of the pool and border in terms of x.
BONUS: Find the length and width of the swimming pool. To receive any credit for your answer factoring must be shown.
Answer:
Working on it now
Step-by-step explanation:
Answer: It's probodly 3000
Step-by-step explanation:
WHAT IS 9/2 as a mixed number?
Answer:
4 1/2
Step-by-step explanation:
.
Answer:
4 1/2
Step-by-step explanation:
9/2 as a mixed fraction.
= 9 ÷ 2
= 4 which leaves a remainder of 1
▪Take the 4 as the whole number, take the remainder 1 and place it over the denominator which is 2
You then get your answer.
4 1/2
1. The Registrars office would like to estimate the average commute time and determine a 95% confidence interval for the average commute time of evening University of Pittsburgh students from their usual initial starting point to campus. A member of the staff randomly chooses a parking lot and selects the first 100 evening students who park in the chosen lot starting at 5:00 PM. The confidence interval is: a. Not meaningful because of the lack of random sampling. b. Meaningful because the sample size exceeds 30 and the central limit theorem ensures normality of the sampling distribution of the sample mean. c. Not meaningful because the sampling distribution of the sample mean is probably not normal. d. Meaningful because the sample is representative of the population.
Answer:
b. Meaningful because the sample size exceeds 30 and the central limit theorem ensures normality of the sampling distribution of the sample mean.
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]
In this question:
Sample of 100, which means that the central limit theorem applies, no matter the distribution of the population. So the correct answer is given by option b.
[tex]2 \div t {}^{2} - 16[/tex]
find the range
Find the equation of a circle with diametrical endpoints (7, –3) and (1, –1).
Answer:
Step-by-step explanation:
average of x-coordinates = (7+1)/2 = 4
average of y-coordinates = (-3-1)/2 = -2
center of circle: (4,-2)
radius = distance between (1,-1) and (4,-2)
= √((4-1)²+(-2-(-1))²)
= √10
equation of circle:
(x-4)² + (y+2)² = 10
What’s the value ? Please help
A school chorus has 60 sixth-grade students and 48 seventh-grade students. The music director wants to make groups of performers with the same combination of sixth and seventh-grade students in each group. She wants to form as many groups as possible. What is the largest number of groups that could be formed?
What is the value we should use for pi when inputting it into the calculator?
Answer: There is a pie symbol on the calculator or if there is no symbol put 3.14
Step-by-step explanation:
Answer:
3.14
Step-by-step explanation:
taught this in math class hope this helps
HELP I DONT KNOW HOW TO DO THIS : international space station anniversary emoji math
examine the wintegraph of monear function
2.0
--
What is the average of charge over the intervall <3 32
Enter your answer as me like this: 42
Answer:
[tex]Rate = 3[/tex]
Step-by-step explanation:
Given
The attached graph
Required
Average rate of change over [tex]1 \le x \le 3[/tex]
This is calculated as:
[tex]Rate = \frac{f(b) - f(a)}{b - a}[/tex]
[tex][a,b] = [1,3][/tex]
[tex][f(a),f(b)] = [-2.4][/tex]
So, we have:
[tex]Rate = \frac{4 - (-2)}{3 - 1}[/tex]
[tex]Rate = \frac{6}{2}[/tex]
[tex]Rate = 3[/tex]
Use the pic for the info
Answer:
5.5
Step-by-step explanation:
Help please with step by step
Answer:
47.1
Step-by-step explanation:
tan 61 = FD/24
FD = 43 3
cos 19 = 43.3/FE
FE = 43.3/cos 19 = 47.1
If Colorado spring, Colorado, has 1.2 times as many days of sunshine as Boston, Massachusetts, how many days of sunshine does each city have if there are a total of 464 days of sunshine between the two in a year? ( Round your answer to the nearest day.)
Boston has 211 days of sunshine and Colorado Springs has 253 days of sunshine.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Let us consider x to represent the number of days of sunshine in Boston.
We know that Colorado Springs has 1.2 times as many days of sunshine as Boston.
The total number of days of sunshine between the two cities is 464.
Set up an equation to solve x.
x + 1.2x = 464
Simplifying and solving for x, we get:
2.2x = 464
x = 211. So Boston has 211 days of sunshine.
The number of days of sunshine in Colorado Springs, we can multiply by 1.2:
1.2x = 1.2(211) = 253.2
So Colorado Springs has 253 days of sunshine.
Therefore, Boston has 211 days of sunshine and Colorado Springs has 253 days of sunshine.
To learn more on Equation:
https://brainly.com/question/10413253
#SPJ2
[tex]e + \frac{1}{8} = \frac{5}{8\\}[/tex]
Carlos biked 24 mi and ran 6 mi.
What is the ratio of the distance Carlos ran to the distance he biked?
4 to 5
1 to 5
1 to 4
4 to 1
Answer:
Step-by-step explanation:
4 to 1
Answer:
4 to 1
Step-by-step explanation:
Harry took total of 27 quizzes over the course of 3 weeks
Answer:
Jesus Harry thats a lot of quizzes
Step-by-step explanation:
but each week he took 9 quizes if thats the question
What is the value of x in the figure above?
What is Y?
What is the value of z?
What 2 methods can be used to find Z?
Answer:
y=92
z=57
TWO METHODS:
1) z=180-31-92 (small triangle)
2) z=180-60-63 (big triangle)
Step-by-step explanation:
63+29+x=180
x=180-92
x=88
y=180-88
y=92
z=180-31-92
z=57
(c) Suppose that 20% of voters are in favor of certain legislation. A large number n of voters are polled and a relative frequency estimate fA(n) for the above proportion is obtained. Use central limit theorem to estimate how many voters should be polled in order that the probability is at least .95 that fA(n) differs from 0.20 by less than 0.02
Answer:
1537 voters should be polled.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
95% confidence level
So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].
20% of voters are in favor of certain legislation.
This means that [tex]\pi = 0.2[/tex]
How many voters should be polled in order that the probability is at least .95 that fA(n) differs from 0.20 by less than 0.02
This is n for which M = 0.02. So
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]0.02 = 1.96\sqrt{\frac{0.2*0.8}{n}}[/tex]
[tex]0.02\sqrt{n} = 1.96\sqrt{0.2*0.98}[/tex]
[tex]\sqrt{n} = \frac{1.96\sqrt{0.2*0.98}}{0.02}[/tex]
[tex](\sqrt{n})^2 = (\frac{1.96\sqrt{0.2*0.98}}{0.02})^2[/tex]
[tex]n = 1536.6[/tex]
Rounding up
1537 voters should be polled.
The sum of the measures of angle M and angle R is 90°
The measure of angle M is (5x + 10)°
The measure of angle R is 55°
What IS the value of x?
Answer:
M+R=90 (Given)
(5x+10)+55=90 (given)
5x+10=90-55
5x+10=35
5x=35-10
5x=25
5x÷5=25÷5 (divide both sides by 5)
x=5
Please help with my math problems
Answer:
4. D
6. A
Step-by-step explanation:
What is the area of the triangle?
Answer:
16 units²
Step-by-step explanation:
Area of the right triangle = ½ × base × height
base = 8
height = 4
Substitute
Area = ½ × 8 × 4
Area = ½ × 32
Area = 16 units²
how many gallons of water did niles pour into the tank each minute? Please help me asap
Step-by-step explanation:
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8. Johnny had $20. He went to the store and
bought $12 worth of candy, chips and soda. What
is the percent of change in Johnny's money?
(7.RP.3)
Answer:
Step-by-step explanation:
%change=100(final-initial)/(initial)
final=20-12=8 and initial=20 so
%change=100(8-20)/20
%change=100(-12)/20
%change=-1200/20
%change= -60%
What is the area of the triangle?
7 in 2
12 in 2
14 in 2
6 in 2
Answer: 6 in 2
Step-by-step explanation:
Tarik turns in his third research report.
His teacher says that 20% of his reports for the
year are done. How many research reports will
Tarik complete during the school year?
Show your work.