Answer:
the survey population is very isolated
Step-by-step explanation:
There is not much information to go on but from the information provided we can say that the biggest problem is that the survey population is very isolated. Bob gave the survey to every single individual in his block, this does not represent the entire population of the people that use the community pool. Therefore, the data would not represent the entire population. Instead, Bob should have randomly chosen mailboxes from the entire community to give them the survey.
1. Tim works as a cook for a food truck at carnivals. He makes $12.00 per hour and worked 36 hours this
weekend. How much did he earn this weekend?(Make sure you use a dollar signs and decimals for cents o
all questions.)
Answer:
$432.00
Step-by-step explanation:
12 x 36 = 432
John removed 64 fish from his pond over a period of 8 days. He removed the same number of fish each day. What was the change in the number of fish in the pond each day?
whats 2 plus 2?////////////////////////////////////////////////
Answer:
4
Step-by-step explanation:
its like you have 2 fishes and you get two more
Answer:
4
Step-by-step explanation:
When you have two question marks and add two more you have four
????
1234
–5(–x + 4)
need help
Answer:
5x−20
Step-by-step explanation:
−5(−x+4)
=(−5)(−x+4)
=(−5)(−x)+(−5)(4)
=5x−20
help please will give a thanks !!
Answer:
7/9, -0.3, 11/2
Step-by-step explanation:
Answer:
7/9, -0.3, 11/2
Step-by-step explanation:
Angelina has 5 cakes. She wants to cut them into 2/5 pieces. How many pieces will she be able to cut?
Answer:
12 whole pieces and 12.5 pieces if you don't want a whole answer. :P
Step-by-step explanation:
Do 5 / (2/5) = 5 x (5/2) = 25/2 = 12 1/2 OR 12.5. Again, if you want a whole number, 12 whole pieces.
Hope that helps!
The rectangle has an area of x^2-9 square meters and a width of x-3 meters
A serving of four home baked chocolate chip cookies weigh 50 grams and contains 12 grams of fat. What is the ratio in lowest terms of fat grams to total grams?
Answer:
Good luck
Step-by-step explanation:
(50) half it
(25) (25)
(12) (12)
(12.5) (12.5) (12.5) (12.5)
(12) (12) (12) (12)
0.5 + 0.5 + 0.5 + 0.5 = 2 (0.5= 1/2 or 0.5 or 0.50)
more examples: (2/4) (3/6) (4/8) (5/10)
So you are gonna have four holes and two twelves
(12/12) (12/12) (12/12) (12/12) (2/12)
The ratio of fat to total weight in the lowest form is 25 : 6.
What are ratio and proportion?A ratio is a comparison between two similar quantities in simplest form.
Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant k and vice versa.
In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.
Given, Four Home-baked chocolate chip cookies weigh 50 grams and contain 12 grams of fat.
We know a/b can be written in ratio form as a : b.
∴ Fat/Total weight = 50/12.
Fat/Total weight = 25/6.
Fat : Total weight = 25 : 6.
learn more about proportion here :
https://brainly.com/question/7096655
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In a certain year, the average e-mail user sent or received 114 e-mails each day. The number of e-mails received was 6 more then twice the number sent. How many were sent and how many were received each day?
Answer:
78 emails
Step-by-step explanation:
Given
Represent sent emails with x and received with y.
So, we have:
[tex]x + y = 114[/tex] -- First statement
[tex]y = 6 + 2x[/tex] -- Second statement
Required
Determine the number of emails received (y)
Make x the subject in [tex]x + y = 114[/tex]
[tex]x = 114 - y[/tex]
Substitute 114 - y for x in [tex]y = 6 + 2x[/tex]
[tex]y = 6 + 2(114 - y)[/tex]
Open bracket
[tex]y = 6 + 228 - 2y[/tex]
Collect Like Terms
[tex]2y+y = 6 + 228[/tex]
[tex]3y = 234[/tex]
Divide by 3
[tex]y = 234/3[/tex]
[tex]y = 78[/tex]
For the given hypothesis test, determine the probability of a Type II error or the power, as specified. A hypothesis test is to be performed to determine whether the mean waiting time during peak hours for customers in a grocery store has increased from the previous mean waiting time of 8.3 minutes. Preliminary data analyses indicate that it is reasonable to apply a -test. The hypotheses are H 0: μ = 8.3 H1: >8.3 The population standard deviation is 3.8 minutes. The sample size is 50. The significance level is 0.05. Find the probability of a Type II error if in fact the mean waiting timeu, is 9.8 minutes. A. 0.125 B. 0.05 C. 0.875 D. 0.95
Answer:
the probability of a Type II error if in fact the mean waiting time u, is 9.8 minutes is 0.1251
Option A) is the correct answer.
Step-by-step explanation:
Given the data in the question;
we know that a type 11 error occur when a null hypothesis is false and we fail to reject it.
as in it in the question;
obtained mean is 9.8 which is obviously not equal to 8.3
But still we fail to reject the null hypothesis says mean is 8.3
Hence we have to find the probability of type 11 error
given that; it is right tailed and o.5, it corresponds to 1.645
so
z is equal to 1.645
z = (x-μ)/[tex]\frac{S}{\sqrt{n} }[/tex]
where our standard deviation s = 3.8
sample size n = 50
mean μ = 8.3
we substitute
1.645 = (x - 8.3)/[tex]\frac{3.8}{\sqrt{50} }[/tex]
1.645 = (x - 8.3) / 0.5374
0.884023 = x - 8.3
x = 0.884023 + 8.3
x = 9.18402
so, by general rule we will fail to reject the null hypothesis when we will get the z value less than 1.645
As we reject the null hypothesis for right tailed test when the obtained test statistics is greater than the critical value
so, we will fail to reject the null hypothesis as long as we get the sample mean less than 9.18402
Now, for mean 9.8 and standard deviation 3.8 and sample size 50
Z = (9.18402 - 9.8)/[tex]\frac{3.8}{\sqrt{50} }[/tex]
Z = -0.61598 / 0.5374
Z = - 1.1462 ≈ - 1.15
from the z-score table;
P(z<-1.15) = 0.1251
Therefore, the probability of a Type II error if in fact the mean waiting time u, is 9.8 minutes is 0.1251
Option A) is the correct answer.
Which dot plot matches the tally chart below?
A 2-column table with 5 rows. Column 1 is labeled Pull-ups Completed in one minute with entries 1, 2, 3, 4, 5. Column 2 is labeled Tally with entries 2, 5, 3, 1, 2.
A dot plot titled Pull-ups completed in one minute goes from 0 to 6. 0 has 0 dots, 1 has 2 dots, 2 has 5 dots, 3 has 3 dots, 4 has 1 dot, 5 has 2 dots, and 6 has 0 dots.
A dot plot titled Pull-ups completed in one minute goes from 0 to 6. 0 has 0 dots, 1 has 2 dots, 2 has 2 dots, 3 has 3 dots, 4 has 1 dot, 5 has 2 dots, and 6 has 0 dots.
A dot plot titled Pull-ups completed in one minute goes from 0 to 5. 0 has 0 dots, 1 has 2 dots, 2 has 5 dots, 3 has 3 dots, 4 has 1 dot, 5 has 0 dots.
A dot plot titled Pull-ups completed in one minute goes from 0 to 6. 0 has 0 dots, 1 has 2 dots, 2 has 5 dots, 3 has 3 dots, 4 has 1 dot, 5 has 1 dot, and 6 has 0 dots.
Answer:
option 1
Step-by-step explanation:
Answer: 1st one
Step-by-step explanation:
2(4x - 2) = 8(x - 7)
Answer:
no solution
Step-by-step explanation:
2(4x - 2) = 8(x - 7)
8x - 4 = 8x - 56
0x = -52
no solution
Answer:
2(4x-2) = 8(x-7)
Distribute on both sides
2(4x)-2(2) = 8(x)-(7)(8)
Simplify
8x - 4 = 8x - 56
Subtract 8x from both sides to balance the equation.
-4 = -56
This is not equal.
Therefore the answer is no solution
9. An internet provider charges an install fee of $59 and a monthly fee of
$109. The total bill was $495. Write an equation to find out how many
months were paid for.
Geometry
please help asap!
Step-by-step explanation:
AB = 3
by similaritiy criterion
CE/ CB= ED/AB
4/6= 2/AB
AB = 3
plz mark my answer as brainlist plzzzz also vote me ..if you find it useful.
what is the quotient of 6,726 and 19
Answer:
354
Step-by-step explanation:
I'm smart............
A bowling alley has a one-time charge of $2.50 to rent a pair of shoes and a charge of $2.00 for each game bowled. The function f (x)
represents the total cost to bowl x games.
Which equation represents f (x)?
O A f(x) = 2.5x + 2
O B. f (x) = 2x + 2.5
O c f(x) = (2.5 + 2)x
OD. f (x) = (2.5 - 2)x
Answer:
B. f (x) = 2x + 2.5
Step-by-step explanation:
Linear function:
A linear function has the following format:
[tex]y = mx + b[/tex]
In which m is the value that y changes by when x increases by 1, and b is the flat fee.
A bowling alley has a one-time charge of $2.50 to rent a pair of shoes and a charge of $2.00 for each game bowled.
This means that [tex]m = 2, b = 2.50[/tex]
So
[tex]f(x) = 2x + 2.5[/tex]
And the correct answer is given by option b;
20 - 2x, if x =10
pls i need help
Answer:
0
Step-by-step explanation:
20 - 2x, if x = 10
First, plug in 10 for each value of x.
20 - 2(10) = ?
Next, multiply 2 and 10 due to PEMDAS. (parentheses/exponents, multiplication/division, addition/subtraction)
20 - 20 = ?
Now, subtract.
= 0
Hope this helps!
Point M is located at (3, -5). Point N is the reflection of point M across the x-axis. What is the distance between M and N? In what quadrant is point N?
Answer:
the point will be (3,5)
will be in the first quadrant
and the distance between the 2 points is 10
Please anyone help me on this
Step-by-step explanation:
iiiiii wiiish iit iis correeeeect
Please answer for instant brainliest .
Answer:
Its the last one
Step-by-step explanation:
Sara and Laura each have a bag containing 2 blue, 3 red, 4 yellow, and 1 green marble. Sara replaces marbles after each draw. Laura does not replace marbles after each draw. Find the probability of Laura drawing a red and then another red marble.
A.
5/19
B.
9/100
C.
3/10
D.
1/15
11. In another country, a road sign reads "80
kilometers to the next gas station". How
far is that distance to the nearest mile?
A 40 mi
C 62 mi
B 50 mi
D 98 mi
please help quick!
eighty-one
is to nine Forty-nine is to
 what is the Quantity in a table graph 
Answer:
The quantity that depends on the other quantity is called the dependent variable, and the quantity it depends on is called the independent variable.
Hope this helps!
Brian has a melon that weighs 3 pounds. He cuts it into six equal pieces .how many ounces did each piece weigh?
Answer:
8 oz
Step-by-step explanation:
1 lb = 16 oz
3 lb = 3 * 1 lb = 3 * 16 oz = 48 oz
The melon weighs 48 oz.
48 oz / 6 = 8 oz
Answer: 8 oz
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?
Answer:
C Pyramid
Hope this helps :)
Nine times a number is 30 more than three times that number. Find the number
Answer:
From this question, we can write
Let n be the number.
9n=3n+30
6n=30
n=5
We find that the number is 30.
Hi there!
it would be 10.. if your asking for what multiply by 9 and 3 more than the number.
1.Find common multiply:
[tex]9,18,27,36,45,54,63,72,81,90,99[/tex]
[tex]30,60,90,120[/tex]
2.Find what nine can multiply to and 30 can also:
[tex]=90[/tex]
3.Divide two terms:
[tex]90*9=10[/tex]
This means, the number would be 10.
What is the answer??????????????
Select the correct answer from each drop-down menu.
The simplified form of [look at the picture] is ____ (-pi, pi, 2 times pi). It’s estimated value is ____ (3.14, 6.28, -3.14)
Sorry if this was confusing the read! One of the answers in the parentheses are supposed to fill in the blank!
Answer:
The answer is pi and the estimate is 3.14
Step-by-step explanation:
Just took the test for plato and Edmentum users only
The estimated value of the expression is π which is approximately equal to the number 3.14.
What is simplification?Simplification is to make something easier to do or understand and to make something less complicated.
The expression is given below.
[tex]\Rightarrow \dfrac{5\sqrt2 \pi - 4\sqrt2 \pi}{\sqrt2}[/tex]
Taking √2and π common, then we have
[tex]\rightarrow \dfrac{(5 - 4)\sqrt2 \pi}{\sqrt2}\\\\\\\rightarrow \dfrac{\sqrt2 \pi}{\sqrt2}\\\\\\\rightarrow \pi \approx 3.14[/tex]
The value of the expression is 3.14.
More about the simplification link is given below.
https://brainly.com/question/12616840
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how can i rewrite that with exponents instead of repeated multiplication
Answer:
10^12
Step-by-step explanation:
Add the exponents when you multiply numbers with exponents