Answer:
23.58
Step-by-step explanation:
The range of a function
y =2/3x + 1 is {3, 5, 17/3, 23/3
Identify the domain.
{1, 8, 15, 12)
{2, 5, 8, 12)
{3, 6, 7, 10)
{10, 16, 18, 22)
Answer:
{3,6,7,10}
Step-by-step explanation:
2/3(3)+1=3
2/3(6)+1=5
2/3(7)+1=17/3
2/3(10)+1=23/3
Solve the equation X-4/2=10
X=24
X=22
X=29
X=39
can someone help me i will mark you has brainlist
Answer:
A
Step-by-step explanation:
please help 30 points!
Answer:
its A=4,20, B=8,40
Step-by-step explanation:
you are supposed to do the Y first then the X
Answer:
B. every 4 miles you run it will have been 20 min
C. put 4 over 20 like a fraction then next to that put a 1 over x then cross multiply and divide giving you the answer wich is " for every mile you run you spend 5 min
D. 1/5 for every mile you spend 5 minutes
E. same thing as above
Step-by-step explanation:
20. Jorge conducted a survey by asking 120 students whether they use a pencil to take notes. Of the students surveyed, 90 responded favorably. Which margin of error matches each confidence level for this situation?
1. 90% =
2. 99% =
3. 95%=
options- 0.102, 0.338, 0.216, 0.077, 0.256, 0.065
Answer:
Margin of error for 90% C.I: 0.065
Margin of error for 99% C.I: 0.091
Margin of error for 95% C.I: 0.077
Step-by-step explanation:
In this question, for each student, there are only two possible outcomes. Either they use a pencil to take notes, or they do not. Students are independent of each other. So we use the binomial probability distribution to solve this question.
Binomial confidence interval:
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]
For this problem, we have that:
120 students, so [tex]n = 120[/tex]
90 responded favorably, so [tex]p = \frac{90}{120} = 0.75[/tex]
Margin of error for 90% CI:
Here [tex]\alpha = 0.1[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}} = 1.645\sqrt{\frac{0.75*0.25}{120} = 0.065[/tex]
Margin of error for 99% CI:
Here [tex]\alpha = 0.01[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.01}{2} = 0.995[/tex], so [tex]Z = 2.325[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}} = 2.325\sqrt{\frac{0.75*0.25}{120} = 0.091[/tex]
Margin of error for 95% CI:
Here [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].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}} = 1.96\sqrt{\frac{0.75*0.25}{120} = 0.077[/tex]
Answer: Margin of error for 99% CI: z=2.575 . input that into the equation and it give you .1017
Step-by-step explanation:
You owe $300 on your credit card. For every month that you fail to make a payment, your balance increases by 1%. Find a formula for the balance B owed after t months with no payment.
Answer:
[tex]B(t) = 300(1.01)^{t}[/tex]
Step-by-step explanation:
The balance owed after t months can be given by an exponential function in the following format:
[tex]B(t) = B(0)(1+r)^{t}[/tex]
In which B(0) is the initial balance owed and r is the growth rate, as a decimal.
You owe $300 on your credit card. For every month that you fail to make a payment, your balance increases by 1%.
This means, respectively, that [tex]B(0) = 300, r = 0.01[/tex]
So
[tex]B(t) = 300(1+0.01)^{t}[/tex]
[tex]B(t) = 300(1.01)^{t}[/tex]
If 60 people were surveyed, how many of them would chose an SUV as their preferred vehicle?
60
57
36
39
Answer:
39
Step-by-step explanation:
Henry is planning to create two rectangular gardens.
Part A
Henry has 96 feet of fencing to enclose the first rectangular garden. The garden will be x feet wide.
Which function, f(x), can Henry use to determine the area, in square feet, of the first garden?
a f(x) = 48x
f(x) = 48 - x
f(x) = 48 – x²
f(x) = 48x - x2
Answer:
Step-by-step explanation:
THANKS 4 POINTS!!!!!!!
91 points need help now . Emanuel put 12 marbles on one pan
of a scale. On the other pan, he put
4 marbles, then he added 8 more
marbles to that side. Each of the-
marbles weighs 1 ound. Is the scale
balanced? Explain.
Answer: I believe the scale is balanced.
Step-by-step explanation: I stated that because since the other side of the scale contained 12 marbles that were 1 pound each that would be 12 pounds and then since 4+8=12 12 pounds of marbles were also put on the other side.
Spencer has a bank account with a balance of $75.00. Spencer owes $30.00 to her credit card and she owes $50.00 for a LCD TV. What would Spencer’s bank balance be, if both debits were paid?
Answer:
-5.00 dollars
Step-by-step explanation:
Answer:
-5
Step-by-step explanation:
75-50-30=-5
2 1/3 - 1 2/5 please help
Answer:
14/15
Step-by-step explanation:
2 1/3 - 1 2/5
1 4/3 - 1 2/5
0+14/15
final answer is 14/15
It is common to leave a 10% tip when the service was just mediocre. At one such occasion, a patron left a 10% tip on a $23.45 bill.
What is the tip amount?
What is the total bill?
Answer: $2.3
Step-by-step explanation: well you need to find 10% of 23.45, so multiply .1 by 23.45.
[tex]23.45 \times 10\%[/tex]
[tex] = 23.45 \times 0.1[/tex]
[tex] = 2.345[/tex]
[tex] = 2.35[/tex]Answer:$2.35 is the tip amount
What is the total bill?Solution:[tex]23.45 + 2.345[/tex]
[tex] = 25.795[/tex]
[tex] = 25.80[/tex]
Answer:$25.80 is the total bill
#CarryOnLearning
#AnswerForTrees
#BrainlyBookSmart
Describe all the x-values at a distance of 25 or less from the number 12. Enter your answer in interval notation.
Answer: [-13, 37]
======================================================
Explanation:
The smallest x value possible is 12-25 = -13
The largest x value possible is 12+25 = 37
It might help to draw out a number line to see this.
x is between -13 and 37, including both endpoints. We can write [tex]-13 \le x \le 37[/tex]
This converts to the interval notation [-13, 37] which is the answer.
The use of square brackets is to indicate "include this endpoint".
can someone please prove that the expression (x-y)+(y-z)+(z-x) is equivalent to 0
Answer:
see below
Step-by-step explanation:
[tex](x-y)+(y-z)+(z-x)\\\\=x-y+y-z+z-x\\\\=(x-x)+(-y+y)+(-z+z)\\\\=0+0+0\\\\=0[/tex]
the product of two number is 42.they are two consecutive numbers. the two numbers are both less than 10. what is the answer?
Answer:
6 and 7
Step-by-step explanation:
You first want to find the factors of 42. They are:
1,2,3,6,7,14,21,42
The factor pairs are:
1 & 422&213&146&7The only factor pair with consecutive numbers is 6 and 7. They are both less than 10 as well, so 6 and 7 works.
Please help to solve thos question..
Twenty-percent (20%) of Americans have no health insurance. Randomly sample n = 15 Americans. Let X denote the number in the sample with no health insurance. What is the probability that 3 of them have insurance?
Answer:
0% probability that 3 of them have insurance
Step-by-step explanation:
For each American, there are only two possible outcomes. Either they have insurance, or they do not. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
Twenty-percent (20%) of Americans have no health insurance.
This means that 80% have insurance, so [tex]p = 0.8[/tex]
Randomly sample n = 15 Americans.
This means that [tex]n = 15[/tex]
What is the probability that 3 of them have insurance?
This is [tex]P(X = 3)[/tex]
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 3) = C_{15,3}.(0.8)^{3}.(0.2)^{12} = 0[/tex]
0% probability that 3 of them have insurance
what is different of the four shapes?
Answer:
It has only 1 pair of parallel sides.
Step-by-step explanation:
Answer:
It has only 1 pair of parallel sides
Step-by-step explanation:
Determine if the pair of lines are parallel, perpendicular, or intersecting.
y=2/3x +4
y=2/3x -1
Answer:
They are parallel
Step-by-step explanation:
They both start with y=2/3x so you know the slope is the same. The +4 and -1 are just the intercepts
HELLPPPPPPPPPPP WILL GIVE BRAINLIEST YO CORRECT ANSWERRR
Answer: AS you can see Triangel A' B' C' has been dilated. You can see this is because it is still a tringle but its been made smaller. it has also has been reflected accross the y axis and then reflected accros the x asis
Step-by-step explanation:
Select the number that would make this statement true: 361.2 ÷ ________ = 036.12 (3 points)
1,000
100
10
1
Answer: c
Step-by-step explanation:
You can take the blank as x
so 361.2 / x = 36.12
multiply by x
361.2 = 36.12x
divide
x = 10
thank me and mark me as brainlies
Answer:
10
Step-by-step explanation:
1a
the length of notes na inante are till wudhof
1
Innly
llon
117 and Itank
Answer:
can you please describe this more and what it is then i will answer it in the comments
Step-by-step explanation:
Pls help I’m failing math I’ll brainlest for the right answer grades close today
answer: i think that it would increase by about 20 percent
i am not sure, if i m wrong then i am very sorry!
Step-by-step explanation:
Answer:
The change is a decrease by ~13.6%
Step-by-step explanation:
Formula:
[First Value – Second Value] ÷ [(First Value + Second Value) ÷ 2] × 100
48 - 84 ÷ 48 + 84 ÷ 2 × 100
-36 ÷ 132 ÷ 2 × 100
-0.2727272727272727 ÷ 2 × 100
-0.1363636363636364 × 100
-13.63636363636364
Or ~ 13.6
The change is a decrease by ~13.6%
Help me please I hate Math
Answer:
112°
Step-by-step explanation:
Each of the interior angles that measure 34° and mentioned there are two of them will add up to 68°. A triangle must equal 180°. Subtract 68 from 180 to get 112° as your final answer.
Answer:
112
Step-by-step explanation:
180-(34+34)
180-68
112
4 and 9/10 minus 2 and 2/5 = (in fractions)
5 and 1/2 minus 2 and 2/5 = (answer in fractions)
5 and 1/2 plus 2 and 3/5 =
4 and 5/6 minus 2 and 1/4 =
Answer:
3 mark me brainlest
Step-by-step explanation:
Answer:
It is the 3rd one I think
Step-by-step explanation:
Hope this helps have an amazing day!
Perry has already taken 8 pages of notes on his own, and he will take 1 page during each
hour of class. After attending 33 hours of class, how many total pages of notes will Perry
have in his notebook?
Answer:
41 pages of notes
Step-by-step explanation:
Since he took 1 page of notes for each hour, and attended 33 hours of class, this will add 33 pages of notes to his notebook.
To find the total, add 8 to this, because he already had 8 pages on his own.
33 + 8
= 41
So, he will have 41 pages of notes in his notebook
Answer:
He will have 41 pages of notes in his notebook.
Step-by-step explanation:
(33*1)+8
30*1=30
3*1=3
30+3=33
33+8
41
What is the answer to 34/6?
Answer:
I don't Know if this is division or fraction
Step-by-step explanation:
But I divided
and my answer was 5r4
The length of a rectangle is 3 yd longer than its width.
If the perimeter of the rectangle is 66 yd, find its length and width.
length = 3 + w (width)
perimeter: 66
2(3 + w + w) = 66
6 + 2w + 2w = 66
6 + 4w = 66
4w = 60
w = 15
length = 15 + 3 = 18
final answer:
length = 15 yards
width = 18 yards
If there are two distinct zeros, enter them separated by a comma. If there is a single zero, enter it. If there
are no zeros, enter the word none.
Find the zeros of the quadratic function from its graph.
y = x2 + 9x + 20
1 2
الفا
4
G
-10
-9
-8
-6
5
-2
- 1
0
1
Given that,
An equation : [tex]y=x^2+9x+20[/tex]
To find,
The zeros of the above function.
Solution,
To find zero, put y = 0
[tex]x^2+9x+20=0\\\\x^2+5x+4x+20=0\\\\x(x+5)+4(x+5)=0\\\\(x+4)=0\ \text{and}(x+5)=0\\\\x=-4\ \text{and}\ x=-5[/tex]
So, the zeros of the above quadratic equation is -4 and -5.
Which expression represents the fourth term in the binomial expansion of (e + 2f)10?
10C3(e7)(2f)3
10C3(e7)(f)3
10C4(e6)(2f)4
10C4(e6)(f)4
Answer:
first one
Step-by-step explanation:
Answer:
a on edge
Step-by-step explanation:
54 is 45% of _______________. fill in the blank
Answer:
Your answer is 120% of 45
Step-by-step explanation: