Answers
Answer:
12
Step-by-step explanation:
18-6
Related Questions
Write the equation of the linear relationship in slope-intercept form using decimals as needed
Answers
Answer:
25/82
Step-by-step explanation:
The table below shows the probability distribution of students in a high school with 1500 students. What is the expected value for the age of a randomly chosen student?
Age
13, 14, 15, 16, 18
Probability
0.01, 0.28, 0.30, 0.25,0.15,0.01
A. 15.28
B. 15.64
C. 15.34
D. 15.36
Answers
Answer: 15.28
Step-by-step explanation:
The expected value for the age of a randomly chosen student is,
⇒ 15.28
Given that:
Total number of students,
⇒ n = 1500,
And, Age : 13, 14, 15, 16, 17, 18
Probability : 0.01, 0.25, 0.27, 0.30, 0.16, 0.01
Now,
We can Calculate the expected value as shown below,
E = 13 × 0.01 + 14 × 0.25 + 15 × 0.27 + 16 × 0.30 + 17 × 0.16 + 18 × 0.01
E = 0.13 + 3.5 + 4.05 + 4.8 + 2. 72 + 0.18
E = 15.38
Therefore, The expected value for the age of a randomly chosen student is 15.38.
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Line segment pq shown on the graph below, is rotated 90 counterclockwise about point q to form pq
Answers
Answer:
this isn’t a 100% guaranteed correct answer but maybe the second option saying “PQ and P’G’ are parallel”
(i’m doing the test rn)
Answer: PQ and P’Q’ are perpendicular (3rd option)
Step-by-step explanation: they’re both perpendicular
Rewrite the linear equation x+3y=2.
Answers
Answer:
y=-1/3x + 2/3
Step-by-step explanation:
Write in slope-intercept form:
3y=-x+2
Divide by 3
y=-1/3x + 2/3
Which of the following is true? (1 point)
Question 19 options:
1)
|–8| < 6
2)
|–6| < |–8|
3)
|8| < |–6|
4)
|–6| < –8
PLS GOD HELP ME
Answers
select the correct answer
Answers
Answer:
b
Step-by-step explanation:
cause i say so.
the diagram below shows the tile border shown in gray that surrounds a kiddie pool how many square feet does the tile border cover
Answers
Answer:
72 square feet.
Step-by-step explanation:
You could do this by figuring out directly how many tiles are needed to make the border B...
It is easier to find the area of the large area and subtract the white pool
Large rectangle = 18 * 9 = 162
Small rectangle = 15 * 6 = 90 Subtract
Area of border = 72
Solve each equation. Check your solution.
a - 5 = -12
Answers
Answer:
A = -7
Step-by-step explanation:
Isolate the variable by adding 5 to each side. This becomes A = -7. To check your work plug -7 in for A.
-7 - 5 = -12
-12 = -12
This is true so -7 is the correct answer.
PLZ ANSWERE QUICKLY
Answers
Transition because it mirrored but not exactly
if two points are in a plane, then the line that contains them is
Answers
Answer:
...then the line containing them lies in the plane. If two planes intersect, then their intersection is a line.
Step-by-step explanation:
plz help asap i will do brainliest!!! A car takes 4 hours to reach a destination travelling at the speed of 63 km/h. How long will it take to cover the same distance if the car travells at the speed of 56 km/h? Do these quantities (time and speed) vary directly or inversely? Find the constant of variation.
Answers
Answer:
A car takes 4 hours to reach a destination travelling at the speed of 63 km/h.
Speed = distance / time
Distance = speed × time
Distance it took the car, travelling for 4 hours to a destination at a speed of 63 kilometers per hour would be
4 × 63 = 252 kilometers.
if the car travels at a different speed of 56 kilometers per hour and the distance remains 252 kilometers, the time it takes will be
Time = distance / speed
= 252/56 = 4.5 hours
The time varies inversely with the speed. The more the speed, the lesser the time and the lesser the speed, the more the time.
Let speed = s and let time = t
s varies inversely with t
Introducing constant of inverse variation k, it becomes
s = k/t
When s = 56, t = 4.5
56 = k/4.5
k = 4.5 × 56 =252
This is the distance
Step-by-step explanation:
What is the ideal number of children to have in a family? The following data represent the ideal number of children for a random sample of 900 adult Americans.
Answers
Answer:
4
Step-by-step explanation:
In most modern family’s they usually have 4 or 2
At the beginning of the semester, a professor tells students that if they study for the tests, then there is a 55% chance they will get a B or higher on the tests. If they do not study, there is a 20% chance that they will get a B or higher on the tests. The professor knows from prior surveys that 60% of students study for the tests. What is the probability that a randomly selected student studies for a test and gets a B or higher?
0.08
0.11
0.33
0.55
Answers
Answer:
.33
Step-by-step explanation:
Only need a answer for problem a
Answers
The answer is 120. Find the supplementary angles by subtracting 60 from 180.
180-60=120
X = 120 degrees
The linear pair is angle B and angle C.
Evaluate 5⁶/5²
is it not 5⁴?
Answers
Determine whether the triangles are congruent using sas sas asa aas HL
Answers
Answer:
They are congruent bc they are the same size and shape
Answer:
Congruent by SAS
Step-by-step explanation:
As given by the diagram, we have two congruent sides already. From the set of parallel lines, we see that two angles are congruent because they are corresponding. Luckily, this angle falls between the two congruent sides, which gives you the proof of SAS.
3 r = 7/10 can anyone explain me how to do it please.
Answers
Answer:
3r = 7/10
3r = 0.7
r = 0.7/3
r = 0.23
Step-by-step explanation:
Kara was baking a cake. The recipe called for 8.5 cups of flour and she put in 3.2 cups so far. How many more cups of flour does she need?
**Write an equation AND solve:**
Answers
Answer:
5.3 cups of flour
Step-by-step explanation:
8.5 - 3.2 = 5.3 cups of flour
i just dropped my moms vase and it shatterd.
Answers
Answer:
tell your grandma your sorry
Step-by-step explanation:
Answer:
Blame it on your dog :)
Step-by-step explanation:
Which expression is equivalent to 4 (x + 3) ?
A. 4x + 3x
B. 4 + x + 3
C. 4x + 12
D. 4x + 3
Answers
Answer:
c. 4x + 12
Step-by-step explanation:
just distribute the 4 out. hope this helped!
Answer:
C.
Step-by-step explanation:
distribute the 4 to the quantity (x+3)
we get: 4x + 12 so your answer is C.
What is the product of -9.56 x 8.5? A. -81.26 B. -73.06 C. 81.26 D. 73.06
Answers
Answer:
A -81.26
Step-by-step explanation:
Answer:
The answer is, A.) -81.26!
Step-by-step explanation:
I got it right on the test. Please mark me branliest!
A. √
B. ×
C. ×
D. ×
what is 10:40 plus 7:15 in time?
Answers
Answer:
5:55
Step-by-step explanation:
just add it up and you'll get the answer which is 5:55
Answer:5:55
Step-by-step explanation: lol
what is 5,300 rounded to the nearest thousand
Answers
Answer:
5,000
Step-by-step explanation:
the averages of the squared differences between the data values and the mean is known as
Answers
Explanation:
The variance is the average of the squared differences from the mean. To figure out the variance, first calculate the difference between each point and the mean; then, square and average the results.
Interest on $5,255 at 12 percent for 30 days (use 360 days) is:
Answers
Answer:
$52.55
Step-by-step explanation:
I=(5255×12×30/360)/100
I=(5255×12×1/12)/100
I=5255/100=52.55
An example of statistical inference is a. a population mean b. hypothesis testing c. calculating the size of a sample d. descriptive statistics
Answers
Answer:
B
Step-by-step explanation:
Statistical inference is the process of making use of analytics to determine the characteristics of a population using its sample.
The two types of statistical inference are:
Hypothesis testing. Confidence interval estimation.Fill in the blank
A small scoop of ice cream holds 75% as much as a large scoop of ice cream.
If the small scoops holds 36 ounces, how much does the large scoop hold? _______________ ounces.
Answers
Answer:
48 ounces
Step-by-step explanation:
75% of x = 36
= 0.75x = 36
Dividing both sides by 0.75 we get:
x = 36/0.75
x = 48 units
The large scoop can hold 48 ounces.
What are percentages?A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate the percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word percent means per 100. It is represented by the symbol “%”
Given here: A small scoop of ice cream holds 75% as much as a large scoop of ice cream. Let the large scoop hold x then as per question we have x×0.75=36
x= 48
Hence, The large scoop can hold 48 ounces.
Learn more about percentages here:
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Which expression is equivalent to 2x^2-
2x + 72
Answers
Answer:
36
Step-by-step explanation:
2x•2x=4x
4x-2x=2x
72÷2=36
Cassie earned $40 in July. She earned $48 in August..
What is the percent increase or decrease in Cassie's monthly earnings?
A. 10% decrease
B. 25% decrease
C. 20% increase
D. 30% increase
Answers
Answer: 20% increase
Step-by-step explanation:
Answer:
C. 20% increase
Step-by-step explanation:
if it was decreasing it would be less and 20% is even and seven is also even
Which table shows a proportional relationship between x and y?
х
7
14
o
28
35
у
2
4
5
X
1
4
7
o
3 5
у
2
CO
14
х
2.5
الم
5
6
o
y
5
6
10
15
1
2
3
4
O
4
10
12
у
16
Answers
The first table shows a proportional relationship between x and y.
Proportional relationshipA proportional relationship exist between two entities if an increase in one causes an increase in another or vice versa.
First tablex y
7 28
14 35
Second tablex y
1 2
4 4
7 5
The first table shows a proportional relationship between x and y, for every value of x, y increases by almost 2 times.
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