Answer:
C
Step-by-step explanation:
35 total girls and 50 total boys were surveyed. How
many students bought their lunch from the cafeteria?
Round to the nearest whole number.
students
Answer:
36 students
Step-by-step explanation:
right on edge
The total number of students bought their lunch from cafeteria is 36.
Given data:
The total number of girls is 35 and the total number of boys is 50.
Probability of boys bought their lunch from cafeteria = 0.44
Since total no. of boys =50
So, number of boys bought their lunch from cafeteria P ( B ) = 50*0.44
And, the value of P ( B ) = 22
Probability of girls bought their lunch from cafeteria = 0.4
Since total no. of girls =35
So, number of girls bought their lunch from cafeteria P ( G ) = 35*0.4
So, the value of P ( G ) = 14
The total number of students , n = P ( B ) + P ( G )
So, n = 22 + 14
n = 36
Hence , the number of students is 36
To learn more about probability distribution click :
https://brainly.com/question/11425427
#SPJ2
The complete question is attached below:
35 total girls and 50 total boys were surveyed. How many students bought their lunch from the cafeteria? Round to the nearest whole number.
Suppose you are driving to visit a friend in another state. You are driving at an average rate of 75 miles per hour. You must drive a total of 475 miles. If you have already driven 100 miles, how long will it take you to reach your destination?
Answer: 5 hours
Step-by-step explanation:
1)
[tex] \frac{475}{75} = \frac{19}{3} = 6 \frac{1}{3} \\ [/tex]
2)
[tex] \frac{100}{75} = \frac{4}{3} = 1\frac{1}{3} \\ [/tex]
3)
[tex]6 \frac{1}{3} - 1 \frac{1}{3} = 5[/tex]
Answer: 5 hours
Which number can each term of the equation be multiplied by to eliminate the decimals before solving?
-m + 0.02 + 2.1m = -1.45 -4.81m
A. 0.01
B. 0.1
C. 10
D. 100
Answer:
D. 100.
Step-by-step explanation:
-m + 0.02 + 2.1m = -1.45 -4.81m
Multiply by 100:
-100m + 2 + 210m = -145 - 481m
In the figure below, angle ABD measures 37 degrees. What is the measure of angle ABC?
A. 64 degrees
B. 74 degrees
C. 47 degrees
D. 37 degrees
Answer:
B. 74 degrees
Step-by-step explanation:
sorry im not good at writing math explantions I hope this drawing helps.
The measure of angle ABC is 74 degrees.
What is the measured angle of ABC?Given:
The measure of ABD is 37 degrees.The measure of BCD is 90 degrees.The measure of DAB is 90 degrees.Find:
The measure of ABC.Solution:
As we know that BAD is forming a triangle that will have 180 degrees if all the angles of the triangles are summed together.
So, ABDA=180 degrees.
Now, ADB=180-(ABD+DAB)=180-(90+37)=180-127=53 degrees.
So, 90+37=127 degrees and 90+53=143 degrees.
Now, we will subtract them to get CBD,
CBD=143-127=37 degrees.
Therefore, ABC= CBD+ABD=37+37=74 degrees.
Hence, the measure of angle ABC is 74 degrees.
Therefore, option (B) is the correct answer.
To learn more about angles, refer to:
https://brainly.com/question/26178129
#SPJ2
you randomly draw a marble from a A bag of marbles that contains eight blue marbles, five Green marbles, and eight red marbles
P(red & blue) = 16/21
Answer:
There is a 76% chance of either getting a blue or red marble
Step-by-step explanation:
8 + 5 + 8 = 21
There are 21 marbles in the bag
21 - 16 = 5
16/21 = 76%
jane and jill were simplifying the expression (2x2+x) +2(-x2+×) and obtained different answers . who is right and why?
Jane is correct because Jane correctly simplified the expression to [tex]\(3x\)[/tex].
Let's carefully simplify the expression [tex]\((2x^2 + x) + 2(-x^2 + x)\)[/tex] step-by-step to determine who is correct, Jane or Jill.
Starting with the given expression:
[tex]\[(2x^2 + x) + 2(-x^2 + x)\][/tex]
We first distribute the [tex]\(2\)[/tex] in [tex]\(2(-x^2 + x)\):[/tex]
[tex]\[(2x^2 + x) + (-2x^2 + 2x)\][/tex]
Next, we combine like terms. We combine the \(x^2\) terms and the \(x\) terms separately:
[tex]\[(2x^2 - 2x^2) + (x + 2x)\][/tex]
Simplify each group of like terms:
[tex]\[0x^2 + 3x\][/tex]
This simplifies to:
[tex]\[3x\][/tex]
Therefore, the correct simplification of the expression [tex]\((2x^2 + x) + 2(-x^2 + x)\) is \(3x\)[/tex].
Jane’s solution is:
[tex]\[\begin{aligned}& = (2x^2 + x) + 2(-x^2 + x) \\& = (2x^2 + x) + (-x^2 + x) + (-x^2 + x) \\& = (2x^2 - x^2 - x^2) + (x + x + x) \\& = 3x\end{aligned}\][/tex]
Jill’s solution is:
[tex]\[\begin{aligned}& = (2x^2 + x) + 2(-x^2 + x) \\& = (2x^2 + x) - 2x^2 + 2x \\& = 2x\end{aligned}\][/tex]
Jane correctly simplified the expression to [tex]\(3x\)[/tex], while Jill made an error by not correctly distributing the [tex]\(2\)[/tex] in the term [tex]\(2(-x^2 + x)\)[/tex].
The complete question is
Jane and jill were simplifying the expression (2x²+x) +2(-x²+x) and obtained different answers. Who is right and why?
Jane
[tex]$$\begin{aligned}& =\left(2 x^2+x\right)+2\left(-x^2+x\right) \\& =\left(2 x^2+x\right)+\left(-x^2+x\right)+\left(-x^2+x\right) \\& =\left(2 x^2-x^2-x^2\right)+(x+x+x) \\& =3 x\end{aligned}$$[/tex]
Jill
[tex]\begin{aligned}& =\left(2 x^2+x\right)+2\left(-x^2+x\right) \\& =\left(2 x^2+x\right)-2 x^2+x \\& =2 x\end{aligned}[/tex]
Find the missing measures
43
Answer:
y=43
x=137
z=137
Step-by-step explanation:
How can you determine the best measure of center and measure of variability to use based on the shape of the distribution?
Question- How can you determine the best measure of center and measure of variability to use based on the shape of the distribution?
Answer- Mean and median both try to measure the "central tendency" in a data set. Summarizing center of distributions (central tendency) .
The following is the way:
To determine the best measure of center and variability based on the shape of the distribution, you must first examine the shape of the data. If the distribution is symmetric and has no outliers, the mean is generally considered the best measure of center, and the standard deviation is a suitable measure of variability. However, for skewed distributions or those with outliers, the median is a more appropriate measure of center, as it is not as affected by extreme values. In such cases, the interquartile range (IQR) is often used to describe variability, since it focuses on the middle 50% of the data, reducing the influence of outliers.
Robust vs. Non-Robust Measures: Measures of center and variability can be robust or non-robust. Robust measures, like the median and IQR, are less affected by outliers and skewed data. Non-robust measures, like the mean and standard deviation, are greatly influenced by extreme values. Therefore, in the presence of outliers or a skewed distribution, robust measures are preferred.
Chebyshev's Rule is helpful in understanding the spread of data in relation to the mean. This rule states that a certain percentage of data must lie within a set number of standard deviations from the mean, regardless of the distribution's shape. In a bell-shaped distribution, which is symmetric and normal, the mean, median, and mode coincide at the peak of the curve, and measures like the mean and standard deviation reflect the data's center and spread effectively
4x² - 4x - 5=8x+6
Simplest radical form
Answer:
4^2 + 4x= 1
Step-by-step explanation:
4x^2 - 4x - 5= 8x +6
4x^2- 4x+8x =6-5
4x^2 + 4x =1
Ann is making a quilt of squares cut diagonally in half. If the squares are 1 foot on a side, how long will the diagonal cuts be? EDIT: the answer is b
A. 1 ft.
B. (the square root of) 2 ft.
C. 4 ft.
D. 2 ft.
Answer:
(B)[tex]\sqrt{2} ft[/tex]
Step-by-step explanation:
Given a Square of side 1 foot, the length of the diagonal is determined using the Pythagoras theorem.
The diagonal is the hypotenuse of the right triangle obtained.
From Pythagoras Theorem,
[tex]Hypotenuse^2=Opposite^2+Adjacent^2\\=1^2+1^2\\=1+1\\Hypotenuse^2=2\\Therefore, Hypotenuse=\sqrt{2} ft[/tex]
The length of the diagonal is [tex]\sqrt{2} ft[/tex]
Answer:
B
Step-by-step explanation:
How many calories of energy will 20 grams of carbohydrates provide if 1 gram provides 4 calories?
Answer:
5 grams provided for 4 calories
Step-by-step explanation:
20 grams at 4 calories per gram.
20*4=80 Calories.
Solve 4s - 12/t when s = 4 and t = 8
Answer:
14.5
Step-by-step explanation:
Charlie has a $55 per month cell phone plan. The sales tax on his plan is 8%. Which expressions can be used to determine how much Charlie will pay each month in total (including tax)? (Select the TWO correct responses)
Option 4 55(108/100)
Option 2 55(0.08)
Option 3 55(8/100)
Option 1 55(1.08)
Answer:
The correct answers are Option 4 55(108/100) and Option 1 55(1.08)
Step-by-step explanation:
To begin, we must analyze the information we have and establish the result, in order to compare it with the results of the operations that the answers offer.
We know that the total Charlie pays for his cell phone plan is $ 55 + 8% tax.
One of the possible ways in which you can calculate a percentage would be in this case:
(55.8) : 100
440 : 100 = 4.40
This indicates that the tax was 4.4 added to 55, giving us a total of 59.4.
Now we just have to check that options 4 and 1 are correct. Let's see:
55 (108/100) =
55 (1.08) = 59.94
This last section is exactly the same as option 1, which also makes it a correct answer.
Score on a test are normally distributed with a mean of 63.2 and standard deviation of 11.7 find, P 81 which separates the bottom81% from top 19%
Answer:
P 81 = 73.5
Step-by-step explanation:
This is a normal distribution problem with a mean of 63.2 and standard deviation of 11.7.
Let the number that separates the bottom 81% from the top 19% be x' and let it's z-score be z'.
P(x ≤ x') = P(z ≤ z') = 0.81
Using the normal distribution table,
z' = 0.878
But note that the z-score for any value is that value minus the mean divided by standard deviation.
z' = (x' - μ)/σ
0.878 = (x' - 63.2)/11.7
x' = 73.4726 = 73.5 to 1 d.p
Hope this Helps!!!
Final answer:
To find the value that separates the bottom 81% from the top 19%, you can use the z-score formula and the given mean and standard deviation to calculate the desired value.
Explanation:
To find the value that separates the bottom 81% from the top 19%, we need to find the z-score corresponding to the 81st percentile.
Using the formula Z = (X - μ) / σ where X is the given value, μ is the mean, and σ is the standard deviation, we can rearrange it to solve for X as:
X = Z * σ + μ
Since we know the mean is 63.2 and the standard deviation is 11.7, we can calculate the z-score corresponding to the 81st percentile (0.81) using the standard normal distribution table or a calculator.
Once we have the z-score, we can substitute it into the formula to find the corresponding value.
The graphs shows the relationship between the number of bags of wild rice in a restaurant and the total number of pounds of wild rice in those bags. Which statement is not correct?
Answer:
Step-by-step explanation:is the divide by 7×10=70is
Find the slope between the following two points: (-15, -7) and (5,-3) *
Answer:
= 1/5
Step-by-step explanation:
We can find the slope using
m = (y2-y1)/(x2-x1)
= (-3- -7)/(5--15)
= (-3+7)/(5+15)
= 4/20
= 1/5
Answer:
The slope of the line is 1/5x.
Step-by-step explanation:
I graphed the points on the graph below. Then, I found the slope by counting the number of spots right and up from the first point to the second point.
The positions are 1,2,3,4 please answer this quickly it is due soon I will mark brainiest and I will give 14 points
Answer:
Step-by-step explanation:
This is Arithmetic sequence
a = first term= 4;
d= difference =second term - first term = 7 - 4 = 3
n= position
nth term = a + (n-1)*d
1st term = 4 + (1-1)*3 = 4 + 0 = 4
2nd term = 4 + (2-1)*3 = 4 + 1*3 = 4+3 = 7
5th term = 4 + (5-1)*3 = 4 + 4*3 = 4 + 12 = 16
6th term = 4 + (6-1)*3 = 4 + 5*3 = 4 + 15 = 19
or
To get the next term add the difference [3] to the previous term.
5th term = 13 +3 = 16
6th term = 16 + 3= 19
Wyd? Can u help with these plz
Answer:
Step-by-step explanation:
what you need to do is look at the question again it say 10 feet above sea level and the other one is 7 feet below sea level. now read your question again hope you find the answer good luck
Answer:D
Step-by-step explanation: -7 is greater than -10 -10 is lower
What is the domain and range of the rainbow? Explain what the domain and range represent. Do all of the values make sense in this situation? Why or why not?
My current table is x | y the original equation is also y=-x^2+36
-2 36
-1 35
0 36
1 35
Answer:
Input functions is called Domain Output functions is called Range
Step-by-step explanation:
Each child spent a portion of their day playing.
Amanda spent 37%
Marcus spent 21%
Nick spent 3/7
Pat spent 2/9
Which list shows them in order from the least amount of time to the greatest amount of time spent playing?
Question 3 options:
A. Nick, Amanda, Pat, Marcus
B. Pat, Marcus, Amanda, Nick
C. Nick, Amanda, Marcus, Pat
D. Marcus, Pat, Amanda, Nick
Ronald works in an Ornithology (bird maintenance) department. Students asked him to find out the best estimate of the local bird population. So he tied a belt around the legs of 40 birds. A few days later, he observed 520 birds, 34 of which had belts. To the nearest whole number, what is the best estimate for the bird population?
Answer:
618 birds.
Step-by-step explanation:
Let the estimated number of birds=x
Out of x birds, he tied a belt around the legs of 40 birds.
When he observed 520 birds, 34 of which had belts.
Expressing each as a ratio
[tex]\frac{x}{40}=\frac{520}{34}[/tex]
Cross Multiply
34x=520X40
x=520X40÷34=611.7≈618
There are an estimated 618 birds.
Answer:
The best estimate for the bird population is 613 birds
Step-by-step explanation:
Let x be the total of number of estimated bird
From x, 40 birds are with belt
he observed 520 birds, 34 of which had belts.
Then taking reciprocal of both statements
x/40 = 520/34
34x = 520*40 = 20800
x = 20800/34
x = 613The total of number of estimated birds is 613 birds
The total of number of estimated birds is 613 birds
Solve the center and radius for both equation below
and I really need help
Answer:
For the one on the left:
Center: (-15,-7)
Radius: 1.73
For the one on the right:
Center:(3,-11)
Radius: 6
Step-by-step explanation:
I used the desmos graph and it calculated when the circle was, And i counted where these items were
Instert commas to show periods according to the Indian as well as International place value system number of 8888888
Answer:
88,88,888
Step-by-step explanation:
Hiromi is painting the front and back of a barn. Each can of paint covers 32 square feet . How many cans of paint does Hiromi need to cover the entire front and back of the barn. The dimensions are 11ft by 15ft by 12 ft
Answer:
312 square feet
Step-by-step explanation:
Each square is 11 x 12 feet which is 132 times 2 for the front and back, which is 264 feet. Then, the triangles at the top have a height of 4 feet (15-11) and a base of 12 feet, so because there are 2 triangles, the result is 12x4=48. Then, you add 264 to 48 and all done.
Hiromi will need to buy 19 cans of paint to cover the entire front and back of the barn.
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Since, The front and back of the barn each have an area of;
11ft x 12ft = 132 square feet.
Since Hiromi is painting the front and back, the total area to be painted is:
2 x 132 = 264 square feet
Similarly, the two sides of the barn each have an area of
11ft x 15ft = 165 square feet.
Since there are two sides, the total area of the sides to be painted is:
2 x 165 = 330 square feet
The total area to be painted is the sum of the front/back area and the side area:
264 + 330 = 594 square feet
Since each can of paint covers 32 square feet, the number of cans of paint Hiromi needs is:
594 / 32 ≈ 18.56 cans
Since, Hiromi cannot buy a fraction of a can of paint,
Hence, she will need to buy 19 cans of paint to cover the entire front and back of the barn.
Learn more about the multiplication visit:
https://brainly.com/question/10873737
#SPJ3
At the start of the week, Monique’s savings account had a balance of $326. She made a $45 withdrawal each day for seven days. During that week, she also made two deposits of $125 each. Which integer represents the balance in Monique’s account at the end of the week?
A. –891
B. –261
C. 261
D. 891
Answer:
Step-by-step explanation:
45 times 7= 315
326-315=11
125 times 2=250
250+11=261
so the answer is C. $261
The integer which represent the balance in Monique's account at the end of the week is 261.
What is addition?The addition is taking two or more numbers and adding them together, that is, it is the total sum of 2 or more numbers.
What is subtraction?Subtraction means to take away from a group or a number of things. When we subtract, the number of things in the group reduces or becomes less.
According to the given question.
Amount of money Monique have initially = $326
The amount of money Monique withdrawal from her savings each day is $45.
⇒ For the seven days the withdrawal amount = 7 × $45 = $315
Also, she made two deposits of $125
So, the total amount se deposited = 2 × $125 = $250
Therefore,
The total balance in Monique's account at the end
= $326 - the amount she withdrawn + the amount she deposited
= $326 - $315 + $250
= $261
Hence, the integer which represent the balance in Monique's account at the end of the week is 261.
Find out more information about addition, and subtraction:
https://brainly.com/question/6840118
#SPJ2
Angles 1 and 2 are complementary. If ∠1 measures 56°, what is the measure of ∠2?
Final answer:
To find the measure of angle 2, which is complementary to angle 1 with a measure of 56°, subtract 56° from 90°, resulting in angle 2 measuring 34°.
Explanation:
If angles 1 and 2 are complementary, it means that the sum of their measures is 90 degrees. Since the measure of ∠1 is given as 56°, we can find the measure of ∠2 by subtracting the measure of ∠1 from 90 degrees:
Measure of ∠2 = 90° - Measure of ∠1
Measure of ∠2 = 90° - 56°
Measure of ∠2 = 34°
Therefore, the measure of ∠2 is 34 degrees.
Help me solve the bottom question please ill give you brainliest (idk how to spell it)
Answer:
area is 6.9cm2
Step-by-step explanation:
you just multiply it out and divide by 2
please help ASAP this is very hard for me to do. You get 13 coins if you answer
Answer:
90 degrees I think
Step-by-step explanation:
Answer:90°
Step-by-step explanation:
All right angles are 90° and all triangles = 180°
To check it add 45° and 90° then you have the other angle
Find the circumference and the area of a circle with radius 5 cm.
Write your answers in terms of n, and be sure to include the correct units in your answers.
The circumference of the circle is 10π cm, and the area is 25π cm².
The formulas for the circumference (C) and area (A) of a circle in terms of
the radius (r) are:
Circumference (C) = 2πr
Area (A) = πr²
Given that the radius (r) is 5 cm, we can substitute this value into the formulas:
Circumference (C) = 2π(5) = 10π cm
Area (A) = π(5)² = 25π cm²
So, the circumference of the circle is 10π cm, and the area is 25π cm².
Please answer and show work :)
Answer:
2 book cases
Step-by-step explanation:
If she has 1 1/4 gallons of paint then she has two (1/2) gallons and one (1/4) gallon. Each book case takes 1/2 gallon of paint and if you multiply it by 2 it equals 1 gallon. You only have 1/4 gallon left.
1 bookcase (1/2 gallon) + 1 bookcase (1/2 gallon) = 1 gallon. There is only 1/4 gallon left which is less than 1/2.