Answer:
1/4 and 1/8 which shold multiply
Step-by-step explanation:
At this weekend’s football game, 15 out of the first 50 people who entered the field were not wearing hats. If this sample is representative of the 250 people attending the game, about how many of them will probably NOT be wearing hats?
75 people out of 250 will NOT be wearing hats.
At this weekend's football game, 15 out of the first 50 people entered in the field were not wearing hats.
The number of people attending the game is 250.
What is Probability?
Probability is a measure of the likelihood of an event to occur.
Now,
Probability for not wearing hats;
⇒ 250/ 50 = 5
⇒ 15 x 5 = 75
Hence, 75 people out of 250 will NOT be wearing hats.
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Please answer
Will give brainlst
Answer:
The answer is C
Step-by-step explanation:
There are other examples but C
Answer:
Step-by-step explanation:
A: not correct. You're changing phase. That's a physical change.
B: not correct. You are just changing the shape of something. That is physical as well. No electrons moving around is involved.
C: Here's your answer. Anytime you get a gas given off you can suspect that a chemical reaction has taken place.
D: Not true. A mixture formation is not a chemical reaction
Find the median of these numbers:4,2,7,4,3 *
Answer:
4
Step-by-step explanation:
median: the middle value. to find this, arrange your numbers in order from least to greatest and find the one in the middle. if there are two in the middle, add them and then divide by 2.
4, 2, 7, 4, 3 → 2, 3, 4, 4, 7
since 4 is in the middle, that is your answer
The median of the sequence is 4.
What is the median?One of the three methods of measuring central tendency is the median. The centre point of a data set is indicated while describing it. The measure of central tendency is this. The mean, median, and mode are the three most popular methods for calculating central tendency.
Given the sequence 4,2,7,4,3,
to find median arrange the values in ascending order,
2, 3, 4, 4, 7
since the sequence has 5 digits so the median is the middle term,
center digit is 4,
median is 4.
Hence the median is 4
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Jeffrey has an aquarium in the shape of a rectangular prism. He is going to place a layer of sand over the base for his iguana. The area of the base of the aquarium can be represented by the expression (42x3−14x2+21x) feet3. If the width of the aquarium is represented by the expression (7x) feet, what is the length of the aquarium?
Answer:
[tex]Length = 6x^2 - 2x + 3[/tex]
Step-by-step explanation:
Given
[tex]Area = 42x^3 - 14x^2 + 21x[/tex]
[tex]Width = 7x[/tex]
Required
Determine the length of the aquarium
The area of a rectangular base is calculated as:
[tex]Area = Length * Width[/tex]
Substitute values for Area and Width
[tex]42x^3 - 14x^2 + 21x = Length * 7x[/tex]
Make Length the subject
[tex]Length = \frac{42x^3 - 14x^2 + 21x}{7x}[/tex]
Factorize the numerator
[tex]Length = \frac{7x(6x^2 - 2x + 3)}{7x}[/tex]
[tex]Length = 6x^2 - 2x + 3[/tex]
PLEASE HELP I WILL MARK BRAINLEIST
The scale used on a map is 5 millimeters represents 32 kilometers. How many millimeters represent 160 kilometers?
160 mm
25 mm
1 mm
800 mm
Answer:
25 mm
Step-by-step explanation:
Set up a proportion where x is the number of millimeters for 160 kilometers
[tex]\frac{5}{32}[/tex] = [tex]\frac{x}{160}[/tex]
Cross multiply and solve for x:
32x = 800
x = 25
So, 25 millimeters represent 160 kilometers
Answer:
25 mm
Step-by-step explanation:
I hope I helped :)
What is the estimated weight of three containers weighing 1.656 kg each?
the anwser is
Step-by-step explanation:
the anwser is 5 kg
One year, the population of a city was 127,000. Several years later it was 129,540. Find the percent increase.
Answer:
2%
Step-by-step explanation:
Answer: 2%
Step-by-step explanation: Method 1
Express the ending population as a percentage of the starting population:
127000 /129540= 1.02
1.02×100= 102%
Subtract the starting 100% to get the percent increase:
102%−100%= 2%
Write an equation for the function whose graph is described.
The shape of f(x) = |x|, but shifted 19 units up and then reflected in the x-axis
Answer:
f(x)=-|x|+19
Step-by-step explanation:
so shifted 19 units up means
abosolute value of x + 19
and reflected in the x axis means that you have to put the - before the abosolute value.
so -|x|+19
Solve the system using elimination.
SHOW ALL WORK on a separate sheet of paper.
52 - 2y = -48
2x + 3y = -23
Answer:
y=50 and x=-173/2
Step-by-step explanation:
52-2y=-48
∴-2y=-100
y=50
and 2x+3y=-23
y=50→(1)
2x+3y=-23→(2)
Putting y=50 in equation (2), we get
⇒2x+3y=-23
⇒2x+3(50)=-23
⇒2x+150=-23
⇒2x=-23-150
⇒2x=-173
⇒x=-173/2
∴y=50 and x=-173/2
What is the slope-intercept equation of this line? (0.6) (4.-2)
Answer: y=-2x+6
Step-by-step explanation:
The equation for slope-intercept form is : y=mx+b
m=slopeb=y-intercept----------------------------------------------------------------
First Step: find the slope
- (y2-y1)/(x2-x1)
GIven
x1=0
y1=6
x2=4
y2=-2
Solve
(y2-y1)/(x2-x1)
=(-2-6)/(4-0)
=-8/4
=-2
Second Step: find the y-intercept
Given
y=-2x+b
Substitute one of the points into the equation
y=-2x+b
(-2)=-2(4)+b
-2=-8+b
b=6
Hope this helps!! :)
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The principal at a school recorded the color and make of all vehicles in the student parking lot. From the data, the following probability model was created about the colors of the vehicles.
A 2-column table with 4 rows. Column 1 is labeled outcome with entries red, black, white, other. Column 2 is labeled probability with entries 0.28, 0.30, 0.22, 0.20.
Which pairs of events about a vehicle are mutually exclusive? Check all that apply.
The events red and black
The events white and two door
The events white and other
The events black and truck
The events red and other
Answer:
1, 3, 5
Step-by-step explanation:
EDG 2020-2021 Stats
The events ,The events red and black ,The events white and other, The events red and other are mutually exclusive.
What is probability?The probability is defined as the chances of happening any event. Mutually exclusive events are those in which the one event is independent of the other event.
The condition for the mutually exclusive event will be:
[tex]P(A|B)=\dfrac{P(A) \ and P(B)}{P(A)}=P(A)[/tex]
We have the data
red, 0.28
black, 0.30
white, 0.22
other 0.20
Here we will check the mutually exclusive event:-
(1)The events red and black
[tex]P(R|B)=\dfrac{P(R\ and\ B)}{P(B)}[/tex]
[tex]P(R|B)=\dfrac{0.28\times 0.30}{0.30}=0.28 =P(R)[/tex]
Hence the event is exclusive.
(2)The events white and other
[tex]P(W|O)=\dfrac{P(W\ and\ O)}{P(O)}=P(W)[/tex]
[tex]P(W|O)=\dfrac{ 0.22\times 0.20}{0.20}=0.22=P(W)[/tex]
Hence the event is exclusive.
(3) The events red and other
[tex]P(R|O)=\dfrac{P(R\ and\ O)}{P(O)}=P(R)[/tex]
[tex]P(R|O)=\dfrac{ 0.28\times 0.20}{0.20}=0.28=P(R)[/tex]
Hence the event is exclusive.
Hence the events ,The events red and black ,The events white and other, The events red and other are mutually exclusive.
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Simple interest to find the ending balance $460 at 13% for
2
years
Answer:
$568.16
Step-by-step explanation:
First, converting R percent to r a decimal
r = R/100 = 13%/100 = 0.13 per year,
then, solving our equation
I = 416 × 0.13 × 2 = 108.16
I = $ 108.16
The simple interest accumulated
on a principal of $ 416.00
at a rate of 13% per year
for 2 years is $ 108.16.
What number increased by 13.33% equals 223.
Answer:
197
Step-by-step explanation:
13.33% of 197 = 26.26
.26 < 0.5
So, 197 + 26 = 223
Answer:
x=196.77 ir 197
Step-by-step explanation:
197
Step by step explanation:
13.33% of 197 = 26.26
0.26 <0.5
So it can be ignored
So, 197 + 26 = 223
erica planted 8 cucumber plants each plant had 37 green cucumbers. how many cucumbers are the 8 plants altogether
Answer:
296
Step-by-step explanation:
8 plants × 37 on each = 296 cucumbers
Answer: 296
If you multiply the 37 green cucumbers each by the 8 cucumber plants they grew from, you'd end up with 296 green cucumbers altogether.
Which is greater. 12 laps in 8 minutes or 16 laps in 10 minutes
Answer:
16 laps in one minute
Step-by-step explanation:
If you divide it you can find that the person will run 1.6 laps in a minute and the other one will run 1.5 laps in 1 minute.
How old am I if, eighty reduced by 2 times my age is fifty-six
There are 3 space helmets and you take away 2,how many do you have?
Answer:
1 space helmet
Step-by-step explanation:
subtract 3-2 = 1 helmet
I need help with math
Answer:
6:3
Step-by-step explanation:
It’s due late tonight can some pls help me pass
Please hurry; The number of bacteria in a culture grows exponentially. It can be modeled with the function f(x) = 20 (2^x).
How many more bacteria will there be after six hours?
a 12
b 32
c 960
d 1280
Answer:
D.
Step-by-step explanation:
20(2^6) = 1280
Can you help me on question one?!
Answer:
I believe the answer is C
Answer:
I think answer is C
Step-by-step explanation:
Becausr A B AND D ARE SAME FORM OF WRITTING
You roll two dice 44 times how many times do you expect to roll at least one even die?
Answer:
2
Step-by-step explanation:
6, because there's 3 types of even die and you're rolling it 44 times, or 6 times per number
3x+4=8y-3 5x+1=10y-4
Answer:
x-3 and y=2
Step-by-step explanation:
The perimeter of a rectangular carpet is 94 yards. Its width is 19 yards.
How long is the carpet?
label required
Answer:
28 yards
Step-by-step explanation:
Perimeter=2(L)+2(W)
94=2(L)+2(19)
94=2(L)+38
-38 -38
56=2(L)
÷2 ÷2
28=L
How much greater is the average temperature on Earth the the average temperature on Jupiter? Jupiter's temperature is -166, Earth's temperature is 59.
Answer: 107 I think
Step-by-step explanation:
The average temperature on Earth is 225 degrees higher than the average temperature of Jupiter.
What is an arithmetic operation?It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that are +, -, ×, and ÷.
It is given that, Jupiter's temperature is -166, and Earth's temperature is 59.
We have to find the temperature difference between the earth and Jupiter.
In mathematics, subtraction is defined as the difference between two quantities. The application of subtraction can be used broadly in different applications to find or solve the problems such as finding differences between two quantities and many more.
The average temperature on Earth and the average temperature on Jupiter are obtained by applying the subtraction operation as,
Δt= T(earth) - T(jupiter)
Δt=59-(-166)
Δt=59+166
Δt=225 degrees
Thus, the average temperature on Earth is 225 degrees higher than the average temperature of Jupiter.
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A rental car company charges a fee of $150.00 for renting a car for a week plus $0.25 per mile driven.
Answer:
y = 150z + .25x
y = $ amount of rental
z = weeks rented
x = miles driven
i hope this helps :)
PLEASE HELP,, WILL GIVE LOTS OF POINTS & BRAINLY
Answer:
the amplitude is 3/2
the vertical shift is 0
Step-by-step explanation:
The triangles below are similar. By what ratio was triangle XYZ enlarged by to create triangle LMN? Use this information to calculate the length of the missing side. Show your work.
Answer:
Ratio: 3:2
LN = 18
Step-by-step explanation:
"similar" means that all the angles are the same and the sides were all increased by the same proportion.
Thus, we know that MN/YZ = LM/XY = NL/ZX
First, we need to find the ratio. To do this, we write MN/YZ as a fraction, and simplify.
MN/YZ = 15/10 = 3/2
(If you want, you can double check this using LM nd XY. 8 * 3/2 = 12, so this is correct)
To find the missing side, we simply multiply XZ by 3/2.
12 * 3/2 = 18, so LN = 18.
Round number 245-320
Answer:
300
Step-by-step explanation:
if you mean, 245.320
what is 900 * 158000
Answer:
142,200,000
Step-by-step explanation:
Used Calculator
Answer:
142200000
Step-by-step explanation:
It's a really long answer