Answer:
A ratio is defined as the comparison of one size of a number to the size of another number. A most convenient number to use when comparing numbers is 100. Ratios in which one number is compared to 100 are called percents. The word percent comes from the Latin word per centum.
Convert to fraction (mixed number): 2.75 = 2 + 0.75
Convert to decimal: 275% = 2.75
Problem: Convert 275% to a decimal and to a simplified fraction
For questions 2-5, the number of pieces in a regular bag of Skittles is approximately normally distributed with a mean of 38.4 and a standard deviation of 2.1. 2.What is the z-score value ofa randomly selected bag of Skittles that has35 Skittles? a) 1.62 b) -1.62 c) 3.40 d) -3.40 e)1.303. What is the probability that a randomly selected bag of Skittles has at least 37Skittles? a) .152 b) .247 c) .253 d).747e).7534. What is the probability that a randomly selected bag of Skittles has between 39 and 42 Skittles? a) .112 b) .232 c) .344 d).457 e).6125. What is the percentile rank of a randomly selected bag of Skittles that has 40 Skittles in it? a)82nd b) 78th c) 75th d)25th e)22nd
Answer:
a. -1.60377
b. 0.25451
c. 0.344
d. Option b) 78th
Step-by-step explanation:
The number of pieces in a regular bag of Skittles is approximately normally distributed with a mean of 38.4 and a standard deviation of 2.12.
a)What is the z-score value of a randomly selected bag of Skittles that has 35 Skittles? a) 1.62 b) -1.62 c) 3.40 d) -3.40 e)1.303.
The formula for calculating a z-score is is z = (x-μ)/σ,
where x is the raw score
μ is the population mean
σ is the population standard deviation.
z = 35 - 38.4/2.12
= -1.60377
Option b) -1.62 is correct
b) What is the probability that a randomly selected bag of Skittles has at least 37 Skittles? a) .152 b) .247 c) .253 d).747e).7534. .
z = (x-μ)/σ
Mean of 38.4 and a standard deviation of 2.12.
z = (37 - 38.4)/2.12
= -0.66038
P-value from Z-Table:
P(x<37) = 0.25451
The probability that a randomly selected bag of Skittles has at least 37 Skittles is 0.25451
Option c) .253 is.correct
c) What is the probability that a randomly selected bag of Skittles has between 39 and 42 Skittles? a) .112 b) .232 c) .344 d).457 e).6125.
z = (x-μ)/σ
Mean of 38.4 and a standard deviation of 2.12.
For 39 Skittles
z = (39 - 38.4)/2.12
= 0.28302
Probability value from Z-Table:
P(x = 39) = 0.61142
For 42 Skittles
z = (42 - 38.4)/2.12
= 1.69811
Probability value from Z-Table:
P(x = 42) = 0.95526
The probability that a randomly selected bag of Skittles has between 39 and 42 Skittles is:
P(x = 42) - P(x = 39
0.95526 - 0.61142
0.34384
= 0.344
Option c is.correct
d) What is the percentile rank of a randomly selected bag of Skittles that has 40 Skittles in it? a)82nd b) 78th c) 75th d)25th e)22nd
z = (x-μ)/σ
Mean of 38.4 and a standard deviation of 2.12.
z = (40 - 38.4)/2.12
= 0.75472
P-value from Z-Table:
P(x = 40) = 0.77479
Converting to percentage = 0.77479× 100
= 77. 479%
≈ 77.5
Percentile rank = 78th
What is the oxidation number for n in the compound nh3? (recall that h usually has an oxidation number of 1.) –3 –1 0 3
The oxidation number of the nitrogen in the ammonia is negative 3. Then the correct option is A.
What is an oxidation number?The number of allocated elements in a chemical combination is termed an oxidation number. The oxidation number is generally the count of the number of electrons that a molecule or atom shares, loses, or gains during bond formation.
The compound is NH₃ is given.
The chemical equation can be written as
NH₃ = N³⁻ + 3 H⁺
Thus, the oxidation number of the nitrogen in the ammonia is negative 3. Then the correct option is A.
More about the oxidation number link is given below.
https://brainly.com/question/10079361
Answer:
A
Step-by-step explanation:
Why can you use a random sample
to make an inference?
Answer:
Random samples are more likely to contain data that can be used to make predictions about a whole population. The size of a sample influences the strength of the inference about the population.
Step-by-step explanation:
An airplane left the airport in Nevada and traveled 3200.0 km to LA. The airplane had an average velocity of 222 m/s. How long was the flight from Nevada to LA in seconds. I will reward brainliest if right. Please and thank you.
Answer:
14,414.41 secondsStep-by-step explanation:
plane traveled 3200 km
aver. velocity = 222 m/s
find:
How long was the flight from Nevada to LA in seconds.
solution:
time = distance / velocity
= 3200 km x 1000 m
222 m/s 1 km
= 14,414.41 seconds
what is the length of bc?
Answer:
x = 3
Step-by-step explanation:
not sure what the term is, but AB is equal to BC because AD = DC
using this, you can make the following equation:
5x - 2 = 7x - 8
subtract 5x from both sides
-2 = 7x - 5x - 8
-2 = 2x - 8
add 8 to both sides
-2 + 8 = 2x
6 = 2x
divide both sides by 2
3 = x
Which value of a would make the inequality statement true? 9.53 < startroot a endroot < 9.54 85 88 91 94
The value of a lies between 90.8209 and 91.0116 is 91. Then the correct option is C.
What is inequality?Inequality is simply a type of equation that does not have an equal sign in it. Inequality is defined as a statement about the relative size as well as is used to compare two statements.
The inequality is given as
9.53 < √a < 9.54
On squaring both sides, we have
9.54² > a > 9.53²
91.0116 > a > 90.8209
Thus, the value of a lies between 90.8209 and 91.0116 is 91. Then the correct option is C.
More about the inequality link is given below.
https://brainly.com/question/19491153
Answer:
the answer is C
Step-by-step explanation:
i got it right.
Which statement about rational numbers is not correct? *
A All rational numbers are also integers.
B Zero is a rational number.
C All integers also rational numbers
D All rational numbers can be written in the form a/b
4p + 5 + p = 2p + 5 + 3p
P= -2
All real numbers
P = 2
P= 5
Answer:
P = All real numbers
Step-by-step explanation:
Step 1: Write equation
4p + 5 + p = 2p + 5 + 3p
Step 2: Solve for p
Combine like terms: 5p + 5 = 5p + 5Subtract 5 on both sides: 5p = 5pDivide both sides by 5: p = pHere we see that any value p would render the equation true. Therefore, we have an infinite amount of solutions.
Ahmad runs 7 miles in 80 minutes. At the same rate, how many miles would he run in 64 minutes?
Tracy says the quadratics below
factors to (x + 6)(x – 6). Is she
correct? Explain in words or show
work to prove your answer.
x2 – 12x + 36
Answer:
no!
One way is to work backwards and check the factored form (x+6)(x-6) using the FOIL method.
Multiply the first terms, then outside terms, then inside terms, then last terms. Simplify and you will find the extended version of (x+6)(x-6) to be x^2-36, NOT the expression x^2-12x+36.
James correctly estimated this difference by rounding each number to the nearest whole.
38.85−2.32
What did James get for his estimate?
Answer:
37
Step-by-step explanation:
This is because u solve the equation first.
After solving the equation the first decimal on the right.If the number is 5 and more than five u go to the position of the one and add plus one to the ones place and change the decimals to 0, if the number is less than five change the decimals to zero and leave the numbers after the decimal point
Solve (x 9)2 = 25. apply the square root property of equality: isolate the variable. startroot (x 9) squared endroot = plus or minus startroot 25 endroot if x 9 = 5, then x = . if x 9 = –5, then x = .
When a positive sign is considered then the value of x is -4 and when a negative sign is considered then the value of x is -14.
What is simplification?Simplification is to make something easier to do or understand and to make something less complicated.
The equatiuon is (x + 9)² = 25.
Take square root on both sides, then we have
(x + 9) = ±5
For positive signs, we have
x + 9 = 5
x = -4
For negative signs, we have
x + 9 = -5
x = -14
More about the simplification link is given below.
https://brainly.com/question/12616840
Answer:
1. -4
2. -14
Step-by-step explanation:
Edg 2022
Solve –9. 4 Greater-than-or-equal-to 1. 7x 4. 2. X Less-than-or-equal-to –8 x Less-than-or-equal-to 8 x Greater-than-or-equal-to –8 x Greater-than-or-equal-to 8.
The solution for the given [tex]-9.4\geq 1.7x+4.2[/tex] will be [tex]x\leq -8[/tex]
What will be the solution for the given inequality?Given that
[tex]-9.4\geq 1.7x+4.2[/tex]
[tex]-9.4-4.2\geq 1.7x[/tex]
[tex]-13.6\geq 1.7x[/tex]
Divide both sides by 1.7 we get
[tex]\dfrac{-13.6}{1.7} \geq \dfrac{1.7x }{1.7}[/tex]
[tex]x\leq -8[/tex]
Thus the solution for the given [tex]-9.4\geq 1.7x+4.2[/tex] will be [tex]x\leq -8[/tex]
To know more about inequalities follow
https://brainly.com/question/24372553
308025 square root division method
please help.
-
Find out the table by finding the y values of each x value given the function f(x)=1/x
Answer:
-1=-1, -1/3=-3, -1/9=-9, 0=undefined, 1/9=9, 1/3=3
Step-by-step explanation:
I hope this helps
Answer:
Step-by-step explanation:
[tex]f(-1)=\dfrac{1}{-1}= -1\\\\\\f(\dfrac{-1}{3})=\dfrac{1}{\dfrac{-1}{3}}=1*\dfrac{3}{-1}\\f(\dfrac{-1}{3})=-3\\[/tex]
[tex]f(\dfrac{-1}{9})=1*\dfrac{9}{-1}=-9\\\\[/tex]
[tex]f(\dfrac{1}{9})=1*\dfrac{9}{1}=9\\\\f(\dfrac{1}{3})=1*\dfrac{3}{1}=3[/tex]
Urgent help!!
1. Donna bakes biscuits on a rectangle cookie sheet that is 30cm by 50cm. Each biscuit has a diameter of 8cm
A. What is the maximum number of biscuits Donna can bake at once on a cookie sheet?
B. If Donna bakes the maximum number of biscuits, what area do the biscuits take up on the cookie sheet?
Answer:
18
Step-by-step explanation:
we know that
[the area rectangular cookie sheet]=30*50--------> 1500 cm²
let's assume that each biscuit is inscribed in a square of 8 cm side
in the side of 30 cm can be placed -----> 30/8--------> 3.75-----> 3
in the side of 50 cm can be placed -----> 50/8--------> 6.25-----> 6
The maximum number of complete biscuits is 3*6------> 18 biscuits
the answer is 18 biscuit
Answer:
We know that
[the area rectangular cookie sheet]=30*50--------> 1500 cm²
let's assume that each biscuit is inscribed in a square of 8 cm side
in the side of 30 cm can be placed -----> 30/8--------> 3.75-----> 3
in the side of 50 cm can be placed -----> 50/8--------> 6.25-----> 6
The maximum number of complete biscuits is 3*6------> 18 biscuits
the answer is 18 biscuits
Step-by-step explanation: some other guy said it
A sprinter ran a race in 11 seconds. What is the domain of this graph?
Answer:
The answer is B.
Step-by-step explanation:
All the integers are positive.
Try this one out with me let’s if we get the same answer
Answer:
x = 80°
Step-by-step explanation:
x + 36° + 76° + 74° + 94° = 360°
x + 280° = 360°
x = 360° - 280°
x = 80°
A car burns 40% of the oil in its engine. The car contains 6000ml of oil How much oil does the car burn
Answer:
2400
multiply 40% and 6000
Step-by-step explanation:
please pass this on... ( #helpsavelives )
Who ever is reading this:
I love u.
U matter.
The world needs u
hang in there ik it may be bad but u deserve the world <3
ur beautiful no matter ur shape, size, color, gender.. anything
don't give up i need u to live.
i wish i could take everyones problems so yall wouldn't have to have em but i cant so just know ily and if anyone needs to talk u can talk to me
Pls pass this on. Everyone deserves to know this. ♥️♥️
just copy and paste its not hard pls this could save someones life
Answer:
2400 ml
Step-by-step explanation:
So you find 40% of 6000 ml
[tex]\frac{40 * 6000}{100 * 1}[/tex]
So 6000 times 40 is 240000
Then 100 times 1 is 100 leaving us with:
[tex]\frac{240000}{100}[/tex]
240000 divided by 100 is 2400 ml
So the car burns 2400 ml of oil.
HOPE THIS HELPED
Explain whether the points (−3,8), (−2,3), (−1,−2), (0,−7), (1,−12), and (2,−17) represent the set of all the solutions for the equation y=−5x−7.
A.Yes, because all solutions in the set of solutions for y=−5x−7 need to have integer values for both x and y.
B.Yes, because all of the points that are listed are on the line y=−5x−7.
C.No, because the x-intercept is not provided in the list of points.
D.No, because the set of all solutions of y=−5x−7 is represented by the line of the equation
Answer:
D
Step-by-step explanation:
We simply put each of the points to test
For a point to be correct, if we substitute the x-coordinate value, we should get the value of the y-coordinate
So let’s proceed
(-3,8)
8 = -5(-3) - 7
8 = 15 -7
8 = 8
(-2,3)
3 = -5(-2) - 7
3 = 10 -7
3 = 3
(-1,-2)
-2 = -5(-1) - 7
-2 = 5-7
-2 = -2
(0,-7)
y = -5x -7
y = -5(0) - 7
y = 0-7 = -7
(1,-12)
y = -5(1) -7
-12 = -5 -7
-12 = -12
(2,-17)
-17 = -5(2) -7
-17 = -10-7
-17 = -17
We can see that all the listed points are on the given line
Although all these points lie on the line, we cannot say they represent the set of all solutions
The set of all solutions can simply be represented by the line of the equation
Walter is making curry for dinner. The recipe says that the curry should cook for 1 hour and 25 minutes. He has been cooking the curry for 59 minutes. According to the recipe, how much longer does Walter need to cook the curry? Write the answer in minutes. minutes
Answer:
26 minutes.
Step-by-step explanation:
1 hour = 60 minutes. 60 minutes + 25 miuntes= 85 minutes of total cook time. 85 - 59 = 26. We do this because he has already cooked for 59 minutes, and the total time is 85 minutes.
If (7^2)P = 7^6, what is the value of p? I will mark brainliest
2
3
4
8
Answer:
3
Step-by-step explanation:
Find The Sum Of 0.6 And 0.73.
Is it 0.67
1.33
0.79
Or 1.30?
Answer:
1.33
Step-by-step explanation:
The angle below is the image formed when a figure containing ZABC is dilated by a
scale factor of 1/2. What is the measure of ZABC?
Answer:
48°
Step-by-step explanation:
Dilating a figure makes the side lengths proportional but does not change the measure of the angles.
Look at the photo attached
Answer:
a)(-3n/4-36)=(-3n/4)+(-36)
-3n/4-36=-3n/4-36
-3n/4+3n/4=-36+36
0=0
n=Q(rational number)
PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS
do u mean the point A?
if so point A coordinates are (-5:-8)
Question 4 of 25
How is a scientific theory different from a hypothesis?
A. A theory is an explanation of a single phenomenon; a hypothesis is a question that can be tested.
B. A theory is a well-tested explanation; a hypothesis is a possible answer that needs to be tested.
C. A theory and a hypothesis are both educated guesses, but a hypothesis is not proven.
D. A theory explains a scientific law; a hypothesis explains a theory.
Which of the following expressions is equal to 48 select all that apply
Answer:
The first one
Step-by-step explanation:
HELP ME PLS!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
PR =8
Step-by-step explanation:
if you look on the diagram the distance between QS and RS are the same so they equal the exact same. Sorry I don’t know how to do the other one
A car has an initial velocity of 10 m/s and final velocity of 43 m/s. The time taken
to reach the final velocity was 3 seconds. What is the acceleration of the car?
Hint: Acceleration (in terms of velocity) = (final velocity - initial velocity)/(time) *
Answer:
160 m/s
Step-by-step explanation:
vi= 10m/s
a= 5om/s*2
t=3 second
vf=?
frist step: find s(distance)
s=vit+1/2 at*2=10m/s x3s +0.5 x50m/s*2 (3s)*2 =30m+225m=255m
second : find vf
s=(vf+vi)/2 xt
vf=2s/t- vi=2(255m)/3s -10 m/s=170 m/s-10m/s=160m/s
Therefore , the final velocity of the car is 160m/s