Answer:
d
Step-by-step explanation:
1 eat
2 eat
3 eat
Evaluate t-7 for t =20
find the mean of, -21,-24,-37,-52,-56
Answer:
-38
Step-by-step explanation:
(-21 + -24 + -37 + -52 + - 56)/5 = -38
At the Roseville Middle School Spring Festival, Ellen is running the egg-dying station. She needs 5 tablespoons of vinegar for every 2 color tablets she uses. Ellen plans to use 16 color tablets.
How many tablespoons of vinegar will Ellen need?
Answer:
40 table spoons
Step-by-step explanation:
We need to divide 16 by 2 because it says for every 2 color tablets she need 5 table spoons of vinegar
16/2 = 8
8 x 5 = 4
In the figure shown, r || s. If the measure of ∠ 2 = 146°, what is the measure of ∠ 7
Answer:
34°
Step-by-step explanation:
1. First, let's find the measure of ∠1 because since r || s, that means ∠1 = ∠7 because they're both alternate exterior angles. Alternate exterior angles are congruent.
2. (Solving for ∠1)
[tex]146 + x = 180[/tex] [tex]146 + x - 146 = 180 - 146[/tex] [tex]x = 34[/tex]3. Now, since we know ∠1 = ∠7, ∠7 = 34°.
y = 1/2x^2 – 2x + 1
Does anyone know how to turn this into vertex form?
Answer:
i do just simplyfy it that the easeasttttttt way am always. here to help i will be your persenol assitent
Step-by-step explanation:
likeeee eomg simplify to it yea i will always helpppppp youuu i likeee helppppppppppppppinggg
If c = 5, what is the value of 9 + c?
Answer:
The value of 9 + c= 14 because 9 + 5=14
According to a study done by Nick Wilson of Otago University Wellington, the probability a randomly selected individual will not cover his or her mouth when sneezing is 0.267. Suppose you sit on a bench in a mall and observe people's habits as
they sneeze. Complete parts (a) through (c)
(a) What is the probability that among 12 randomly observed individuals, exactly 7 do not cover their mouth when sneezing?
Using the binomial distribution, the probability is
(Round to four decimal places as needed.)
(b) What is the probability that among 12 randomly observed individuals, fewer than 5 do not cover their mouth when sneezing?
Using the binomial distribution, the probability is 1
(Round to four decimal places as needed.)
(c) Would you be surprised if, after observing 12 individuals, fewer than half covered their mouth when sneezing? Why?
No, I would not be surprising, because using the binomial distribution, the probability is . which is v0.05
(Round to four decimal places as needed.)
Using the binomial distribution, it is found that:
a) There is a 0.0162 = 1.62% probability that among 12 randomly observed individuals, exactly 7 do not cover their mouth when sneezing.
b) There is a 0.5958 = 59.58% probability that among 12 randomly observed individuals, fewer than 5 do not cover their mouth when sneezing.
c) The probability is higher than 5%, so it would not be unusual.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, with p probability.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
In this problem:
Sample of 12, thus [tex]n = 12[/tex]0.267 probability that a person covers their mouth, thus [tex]p = 0.27[/tex].Item a:
This probability is P(X = 7), so:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 7) = C_{12,7}.(0.267)^{7}.(0.733)^{5} = 0.0162[/tex]
There is a 0.0162 = 1.62% probability that among 12 randomly observed individuals, exactly 7 do not cover their mouth when sneezing.
Item b:
The probability is P(X < 4), which is:
[tex]P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)[/tex]
Then
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 0) = C_{12,0}.(0.267)^{0}.(0.733)^{12} = 0.0241[/tex]
[tex]P(X = 1) = C_{12,1}.(0.267)^{1}.(0.733)^{11} = 0.1052[/tex]
[tex]P(X = 2) = C_{12,2}.(0.267)^{2}.(0.733)^{10} = 0.2107[/tex]
[tex]P(X = 3) = C_{12,3}.(0.267)^{3}.(0.733)^{9} = 0.2558[/tex]
Then
[tex]P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = 0.0241 + 0.1052 + 0.2107 + 0.2558 = 0.5958[/tex]
There is a 0.5958 = 59.58% probability that among 12 randomly observed individuals, fewer than 5 do not cover their mouth when sneezing.
Item c:
This probability is:
[tex]P(X < 6) = P(X < 4) + P(X = 5) = 0.5958 + P(X = 5)[/tex]
Negative probabilities do no exist, thus, this probability is guaranteed to be above 0.05, which means that it would not be unusual if fewer than half covered their mouth when sneezing.
A similar problem is given at https://brainly.com/question/24923631
2x - 6y = 6
6x - 4y = 2
Answer:
x = - 3/7
y = - 8/7
Step-by-step explanation:
(2x - 6y = 6)/2 =
x - 3y = 3
x = 3y + 3
Substitution:
6 (3y +3) - 4y = 2
18y + 18 - 4y = 2
14y = -18+2
y = -16/14
y = - 8/7
Substitution:
x = 3(-8/7)+3
x = -24/7 + 3
x = -3/7
9514 1404 393
Answer:
(x, y) = (-3/7, -1 1/7)
Step-by-step explanation:
We can divide each equation by 2 and subtract the constant to put them in general form.
x -3y -3 = 0
3x -2y -1 = 0
This form facilitates use of the "cross multiplication method" of solution. That method tells us ...
1/d1 = x/d2 = y/d3
where the differences d1, d2, d3 are the differences of cross-products:
d1 = 1(-2) -(3(-3)) = 7
d2 = -3(-1) -(-2(-3)) = -3
d3 = -3(3) -(-1(1)) = -8
Then the solutions are ...
x = d2/d1 = -3/7
y = d3/d1 = -8/7
(x, y) = (-3/7, -8/7)
_____
Additional comment
When the general form equations ax+by+c=0 and dx+ey+g=0 have their coefficients written in two rows: (note the repeated first coefficient)
a, b, c, ad, e, g, dThe pattern in the cross-differences is relatively easy to see:
d1 = ae -dbd2 = bg -ecd3 = cd -gaThe expressions for the solution values, (x, y) = (d2/d1, d3/d1), are substantially identical to those of Cramer's method.
h(x)=(x+1)^2 find functions f(x) and g(x) so that h(x)=f(g)(x))
9514 1404 393
Answer:
f(x) = x²g(x) = x+1Step-by-step explanation:
There are numerous possible solutions. Perhaps the simplest is to look at what happens to x in the expression for h(x).
x has 1 addedthe sum is squaredThis suggests that f(x) will square the result of g(x), and that g(x) will add 1 to x:
g(x) = x +1
f(x) = x²
__
Check
h(x) = f(g(x)) = f(x+1) = (x+1)² . . . . as required
_____
Additional comment
For some (almost) arbitrary function g(x), the function f(x) can include its inverse (to get the value of x+1), then perform the square. If g(x) involves powers of x, then f(x) only needs to do enough of an inverse to find (x+1)². Here's a relatively simple example.
g(x) = 2x+3
f(x) = (x -1)²/4
Then h(x) = f(g(x)) = f(2x +3) = ((2x +3) -1)²/4 = (2(x+1))²/4 = (x+1)²
Please help me on my homework
6 is a whole number so the answer is 6
What is 3.125 as a
Fraction!
PLEASE HELP I'll give brainliest
Answer:
First equation is already in slope-intercept form
The y-intercept of the first equation is (0,4)
The slope of the first equation is -2
Second equation is y= -1/2x-2 in slope-intercept form
The y-intercept of the second equation is (0,-2)
The slope of the second equation is -1/2
Kevin's earnings vary directly with the number of hours he works. Suppose that he worked 7 hours yesterday and earned $112. How much will he earn today if he works 10 hours?
Answer:
$160 in 10 hours
Step-by-step explanation:
We know that Kevin earns $112 for working 7 hours. To find the answer for 10 hours, we need to find the unit rate.
Divide 112÷7= $16 for every 1 hour he works.
Now, we can use the unit rate to find the amount earned for 10 hours.
16×10= $160
Solve and check the equation.[tex]\frac{x}{10}=\frac{5x}{7} -43[/tex]
Answer:
x = 70
Step-by-step explanation:
Step 1: Simplify both sides of the equations.
[tex]\frac{x}{10} = \frac{5x}{7}-43[/tex] [tex]\frac{1}{10}x=\frac{5}{7}x-43[/tex]Step 2: Subtract 5/7x from both sides.
[tex]\frac{1}{10}x- \frac{5}{7}x = \frac{5}{7}x - 43 - \frac{5}{7}x[/tex] [tex]\frac{-43}{70}x = -43[/tex]Step 3: Multiply both sides by 70/(-43).
[tex]\frac{-43}{70}x * \frac{70}{-43} = -43*\frac{70}{-43}[/tex] [tex]x = 70[/tex]Step 4: Check if solution is correct.
[tex]\frac{(70)}{10}=\frac{5(70)}{7} -43[/tex] [tex]7 = \frac{350}{7} - 43[/tex] [tex]7 = 50 - 43[/tex] [tex]7 = 7[/tex]Therefore, x = 70.
A delivery truck is transporting boxes of two sizes: large and small. The large boxes weigh 45 pounds each, and the small boxes weigh 20 pounds each. There are 135 boxes in all. If the truck is carrying a total of 4450 pounds in boxes, how many of each type of box is it carrying?
Answer:
45 - big boxes, 200 - small boxes
Step-by-step explanation:
45 x 10 = 450
200 x 20 = 4000
Total = 4,450
Hope it's correct
If (x-3) ²=16, find the positive value of x.
7
Step-by-step explanation:
(x - 3)² = 16
x² - 6x + 9 = 16
x² - 6x + 9 - 16 = 0
x² - 6x - 7 = 0
(x - 7)(x + 1)
x = 7 \/ x = -1
so positive value of x = 7
Suppose you write 10 consecutive natural numbers on a board. When one of the numbers is erased, the sum of the remaining numbers is 2015. What number was erased?
*NOTE: If any troll/false responses are added, I won't hesitate to report.*
-7.532 devided by (-2.69)
142% as a fraction or mixed number
the sum of the outer angles is half the sum of inner angles. how many sides does it have?
.............................
plzz help me .....
Answer:
The sum of the outer angles of polygon is twice the sum of the inner angles. (i) How many sides does it have? (ii) What if the sum of outer angles
Describe the type of transformation from figure A to figure B.
nahhhh man ain't answering that lololollozz
the length of 6 identical iron rods is 48 unit what will be the total length of 9 such rods
The total length of 9 rods will be 72 units.
What is Addition?
A process of combining two or more numbers is called addition.
Given that;
The length of 6 identical iron rods is 48 unit.
Now,
Since, the length of 6 identical iron rods is 48 unit.
Hence, the length of 9 identical iron rods = 9 × 48 / 6
= 9 × 8
= 72 units
Thus, The total length of 9 rods will be 72 units.
Learn more about the addition visit:
https://brainly.com/question/4721701
#SPJ2
is there anyone or does anyone know where i can get help for my statistics exam tomorrow, i didnt study at all and im doomed now?
Answer:
Quizziz (Another educational site) or asking questions about the Exam/Quiz on Brainly.
Step-by-step explanation:
Use the graph to determine the y intercept
Answers:
y intercept: 9zeros: -3, -1, 1, 3===============================================
Explanation:
The y intercept is where the curve crosses the y axis. The curve appears to do so just below y = 10, so y = 9 seems like a good estimate. I'm basing this off of the answer choices given. The y intercept always occurs when x = 0.
The zeros, aka roots or x intercepts, are where the curve crosses or touches the x axis. This occurs in four locations: x = -3, x = -1, x = 1 and x = 3. The x intercepts always occur when y = 0.
Question 8 (1 point)
A company laid off 80% of its work force. The number of employees after the layoff is 400. How many employees were
there before the layoff?
15,000
Oь
O
Od
2000
3600
2200
Next Page
Once you click Next Page you will not be able to change your answer
Step-by-step explanation:
The number of employees before the layoff = 2000
What is percentage?"It is a number can be expressed as a fraction of 100."
For given question,
Let 'n' be the the number of employees before layoff.
A company laid off 80% of its work force.
The number of employees after the layoff is 400.
The number of employees after the layoff would be,
⇒ n - (80 percent of n) = 400
[tex]\Rightarrow n-(n\times \frac{80}{100} )=400\\\\\Rightarrow n[1-0.8]=400\\\\\Rightarrow n\times 0.2=400\\\\\Rightarrow n=2000[/tex]
Therefore, the number of employees before the layoff = 2000
Learn more about percentage here:
https://brainly.com/question/22111589
#SPJ3
3. Let : (0,1] → R be defined by 0 ifr> Let e > 0. Prove that there exists a partition, P. of (0,1) with S(f,P) -s(f,p)<€
Step-by-step explanation:
defined by 0 ifr> Let e > 0. Prove that there exists a partition, P. of (0,1) with ... - did not match any documents.
Suggestions:
absolute value of 3(x-2)=12
Please answer! No links!!!
Picture is included
Answer:
10x+276
Step-by-step explanation:
multiply length times width to get the area
12(5/6x +23)
simplify
10x +276
i hope your test is going well <3
The sales tax rate for the state of Washington was 9.4%. what is the state sales tax on a $3900 car in Washington? What is the final cost of the car, including tax?
Answer:
3900 x.094 = 366.60
366.6+3900=4266.60
can you do 1 2 and 3
Answer: can you do 1 2 and 3
Step-by-step explanation: