Answer:
91/12
Step-by-step explanation:
3 1/3 + (-2 1/4) + 1 5/6 = 91/12 or 7.58
three-quarters of students are wearing the school's colors. if there are 300 students how many are wearing the colors?
Answer:
225 students are wearing school colors.
Step-by-step explanation:
1. we know that 75% or .75 of the students are wearing school colors.
2. to find what this number is we need to know what 75% of 300 is.
("of" is a keyword meaning multiply)
3. We can do this by multiplying:
300(.75) = 225
a researcher is studying a group of field mice. the distribution of the weight of field mice is approximately normal with mean 25 grams and standard deviation 4 grams. which of the following is closest to the proportion of field mice with a weight greater than 33 grams?
a)0.046
b)0.977
c)0.954
d)0.023
Using the normal distribution, it is found that the proportion is closest to 0.023, given by option d.
---------------------------------
Normal Probability Distribution
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
---------------------------------
Mean of 25 means that [tex]\mu = 25[/tex]Standard deviation of 4 means that [tex]\sigma = 4[/tex].The proportion above 33 is 1 subtracted by the p-value of Z when X = 33, thus:[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{33 - 25}{4}[/tex]
[tex]Z = 2[/tex]
[tex]Z = 2[/tex] has a p-value of 0.977.
1 - 0.977 = 0.023
Thus the proportion is 0.023, given by option d.
A similar problem is given at https://brainly.com/question/15181104
A physician's assistant measures a child and finds his height is 41 in.
At his last visit to the doctor's office the child was 38 in, tall. How much
did the child grow?
Answer:
He grew 4 inches since his last visit.
Step-by-step explanation:
41 - 38 = 4
is 121,196,24 and 12 rational numbers or irrational numbers
Answer:
Its a rational number
The question is in the picture above. Please help
Answer:
it is 1
Step-by-step explanation:
What is the difference of the fractions? Use the number line and equivalent fractions to help find the answer. Negative 2 and one-half minus (negative 1 and three-fourths) A number line going from negative 3 to 0 in increments of One-fourth. A Negative 4 and one-fourth B –4 C Negative three-fourths D Negative one-half
Answer:
B
Step-by-step explanation:
because that is were you plot it on the number line
Answer:
B
Step-by-step explanation:
Got it right on my test.
Find the value of y.
On a piece of paper graph y= 2x-3. Then determine which answer matches the graph you drew. (there is 4 options not just three)
Answer:
A
Step-by-step explanation:
since the slope (2) is positive the graph is similar to y=x, so graphs B and D are eliminated
so when x=1 we have
y=2(1)-3
y=2-3
y=-1
so the point is (1,-1), graph C eliminated
so it's A
The standard equation for finding the equation of a line is expressed as
y = mx + b
m is the slope of the line
b is the y-intercept
Before we can plot the equation of a line, we must know the slope and the y-intercept of such line.
Given the equation of a line to be plotted expressed as y = 2x - 3
Compared with the standard equation;
mx = 2x
m = 2
Hence the slope of the line is 2
Similarly;
b = -3
Hence the y-intercept is 3.
Find the required graph attached below:
Learn more here: https://brainly.com/question/17003809
3 more than the product of a number and 11
•write as a algebraic expression
Answer:
3+(t x 11)
Step-by-step explanation:
Answer:
3(x+11)
Step-by-step explanation:
Paul bought a student discount card for the bus. The card allows him to buy daily bus passes for $1.30.
After one month, Paul bought 21 passes and spent a total of $33.30.
Help pls
Answer:
Paul spent 6 dollars on the student discount card.
Step-by-step explanation:
If each pass is $1.30, simply divide 21 by 1.30
You should get 27.30
Next, subtract 33.30 by 27.30, getting 6.
3(6+zw) = 6(w t3)
How many solutions
Examine the two-step equation
7
-2
4 4
Which property of operations allows you to add the same constant term to both sides?
O multiplication property of equality
division property of equality
O addition property of equality
subtraction property of equality
1) Intro
Answer: addition property of equality
Step-by-step explanation:
Answer:
Addition property of equality (C)
Step-by-step explanation:
Edge unity
2021
Lesson 1-1: The periodic comet named Johnson has been seen at every return since its discovery in 1949, as shown in the table below: Occurrence Year Seen 1- 1949 2 1956 3 1963 4 1970 Use the table for Items 1-5. Describe any pattern you see in the table. Write the values in the second column at the table as a sequence. Identify the common difference. If the pattern continues, in which of the following years will the comet be visible again? A. 2017 B. 2018 C. 2019 D. 2020 About how many times would the Johnson comet be visible during a typical person’s lifetime? Explain your reasoning. 5. Reason abstractly. A man was born during a year in which the Johnson comet was visible in the sky. The next time that the comet was visible after the man’s birth year was in 2005. In what year was the man born? The table to use is attached to the question.
Answer:
Step-by-step explanation:
Occurrence Year seen Difference
1 1949 -
2 1956 1956 - 1949 = 7
3 1963 1963 - 1956 = 7
4 1970 1970 - 1963 = 7
Difference between each successive term of year seen = 7 years
Therefore, there is a common difference of 7 years between each successive term.
Function defining the year seen will be a linear function and will increase in the same pattern. (multiple of 7 years)
2017 - 1970 = 47 (It's not the multiple of 7)
2018 - 1970 = 48 (It's not the multiple of 7)
2019 - 1970 = 49 (multiple of 7)
2020 - 1970 = 50 (It's not the multiple of 7)
Therefore, comet will be seen next in 2019.
Option (C) will be the answer.
If a person is born in 2005
Then difference between 2005 and 1949 = 56 years
Number of times comet seen after 1949 = [tex]\frac{56}{7}=8[/tex] times
Total number of comet seen in the lifetime = 8 times
Zoey signed up for a streaming music service that costs $7 per month. The service allows Zoey to listen to unlimited music, but if she wants to download songs for offline listening, the service charges $0.75 per song. How much total money would Zoey have to pay in a month in which she downloaded 45 songs? How much would she have to pay if she downloaded s songs?
Answer:
the answer is 60 $ but with the charge of 7 its 67.
Step-by-step explanation:
45 divided by 0.75 is 60.
Answer:
Cost for 45 songs: 40.75
Cost for s songs: 0.75s + 7
Step-by-step explanation:
Since its $0.75 per song, you have to multiply 0.75 to 45. You already need to pay $7. The equation would be 0.75s + 7 and the answer would be 40.75.
A 6-ounce package of fruit snacks contains 45 pieces. How many pieces would you expect in a 10-ounce package?
Answer:
The answer is 75
Use a number line to show why this is true.(+3)-(-2)=(+3)+(+2)
Answer:
It is true - multiply by - is equal to +
so
3-(-2)=3+2
3+2=3+2
5=5
so
its true in mathematically form
Step-by-step explanation:
Help what is the answer to 7.26 divide by 5 and I also need the steps include Plz!!
Answer:
the answer is 1.452.
Step-by-step explanation:
7.26 ÷ 5 = 726 ÷ 500 = 1.452
hope this helps!
8
Henry earned 5 dollars for each lawn he mowed. If he had 12 lawns to mow, but forgot
to mow 7 of them, how much money did he actually earn?
A $10
B $49
C $24
D $8
Plz help
Answer:
huh that's weird there should be an answer for 25
Step-by-step explanation:
Before beginning voice lessons, Martina already knew how to sing 18 pieces, and she
expects to learn 2 new pieces during each week of lessons. How many weeks of lessons will
Martina need before she will be able to sing a total of 24 pieces?
Answer:
Before beginning voice lessons, Martina already knew how to sing 18 pieces, and she
expects to learn 2 new pieces during each week of lessons. How many weeks of lessons will
Martina need before she will be able to sing a total of 24 pieces?
The formula a = m − n represents the actual cost, a, of an item with original price m after a coupon for n dollars off is applied. Solve the formula for the amount of the coupon. Group of answer choices n = −m − a n=a+m n=m−a n = a − m
Answer:
[tex]n = m - a[/tex]
Step-by-step explanation:
Given
[tex]a = m - n[/tex]
Required
Solve for n
[tex]a = m - n[/tex]
Add n to both sides
[tex]a + n = m - n + n[/tex]
[tex]a + n = m[/tex]
Subtract a from both sides
[tex]a - a + n = m - a[/tex]
[tex]n = m - a[/tex]
Hence, option C answers the question
question:- why?
answer: ?
plz give the answer and i will mark you the brainliest just like that
Answer:
Make me brainliest for good luck
Step-by-step explanation:
please help meeee! !!!
Answer:
c) $ 12.00
Step-by-step explanation:
$78.20 x 15%= 11.75
round up
please help me! WILL MARK BRAINLIEST
Answer:
100
Step-by-step explanation:
455=94x22^2/r
455=94x484/r
455=45496/r
0.01=1/r
100=r
18.194 rounded to the tenths
Answer:
18.2
Step-by-step explanation:
To round 18.194 to the nearest tenth consider the hundredths’ value of 18.194, which is 9 and equal or more than 5. Therefore, the tenths value of 18.194 increases by 1 to 2.
18.194 rounded to the nearest tenth = 18.2
What is 28 divided by 1,000
Answer:0.028
Step-by-step explanation:
Answer:
0.028
Step-by-step explanation:
I used a calculator.
10) A market has 60 cupcakes
for sale. Of those %s are
chocolate. How many are not
chocolate?
Answer:
36
Step-by-step explanation:
Jessie, Kristen, and Kendall all went shopping together and bought shirts. Kristen bought a shirt that cost $8.50. Jessie's shirt cost $12.75. If their total bill was $39.45 how much did Kendall's shirt cost?
Answer:
Kendall's shirt was $18.20.
Step-by-step explanation:
39.45 - 8.50 - 12.75 = 18.20
Is 5 1/2 rational or irrational ?
Answer:
Rational
Step-by-step explanation:
It is a rational number because any number that can be rewritten as a simple fraction is a rational number. This means that natural/counting numbers, whole numbers and integers, like 5, are all part of the set of rational numbers as well because they can be written as fractions, as are mixed numbers such as 1 ½.
3х + 5 = 3х + 5
What solution is this?
Which expression is equivalent to −2.1+(−5.9)+(−3.7) ?
(2.1+5.9)+(−3.7)
−(2.1−5.9)+(−3.7)
−2.1−(5.9+3.7)
(2.1+5.9+3.7)
Answer:
-2.1-5.9-3.7
-117/10
-11.7
Step-by-step explanation:
Answer:
-(2.1 - 5.9) + (-3.7)
