is statistics class hard? i signed up for it and kinda regretting it
Answer:
yes it is hard
Step-by-step explanation:
Most people don’t really learn statistics until they start analyzing data in their own research.
The cost of making a shirt is half of what the shirt normally sells for. Today, the shirt is in a 15 percent discount from its normal price. What is the current price of the shirt?
Answer:
.85 times the cost to make the shirt
Step-by-step explanation:
Let x represent cost to make the shirt.
Today, the shirt is in a 15 percent discount from its normal price.
Discount = 15/100 * x = 0.15x
Current cost = Original cost - discount
Current cost = x - 0.15x = 0.85x
The answer is;
.85 times the cost to make the shirt
X2-6x+8=? Answer plzzzzzzzzzzzzzz
Answer:
The answer to your problem should be 2
Answer:
x^2 - 6x + 8 = x^2 - 2x - 4x + 8 = x(x-2) - 4(x-2) = (x-4) (x-2)
x - 4 = 0 => x = 4
x - 2 = 0 => x = 2
A vision insurance company selects a SRS of 300 clients who wear contact lenses. They randomly assign 200 clients to the experimental group to receive an app that promotes contact lens hygiene. The remaining 100 clients form the control group. Suppose that without the app, 96%, percent of their clients with contact lenses would have healthy eyes for the year, and that with the app, 99%, percent would have healthy eyes.
After a year, the insurance company looks at the difference (Experimental−Control) between the proportions of clients with healthy eyes in each group.
What will be the shape of the sampling distribution of the difference in sample proportions, and why?
A
Approximately normal, because we expect 288 healthy and 12 not-healthy in both groups, and all of these counts are at least 10.
B
Approximately normal, because we expect 192 healthy and 20 not-healthy eyes for the experimental group, and 96 and 40 for the control group, and all of these counts are at least 10.
C
Not normal, because we expect fewer than 10 clients with healthy eyes in both groups.
D
Not normal, because we expect fewer than 10 clients with not-healthy eyes in both groups.
Answer:
NO, its D: Not normal, because we expect fewer than 101010 clients with not-healthy eyes in both groups.
Step-by-step explanation:
.
Answer in terms of A and B
I need the answer for this. Please help
Y=8/10+22
Helpppppppppppppppoppppoopppppppp
Answer:
angle 2 = 75 ; angle 1 = 105
Step-by-step explanation:
Please help!!! I can't answer this!!!!
Answer:
y=8x
Step-by-step explanation:
X is the input, Y is the output. The answer describes that whatever X is, if you times it by 8, you get Y. It can't be "x + 14" because that only works with the first number given. If you do Y = X + 14, 6 doesn't equal 48.
Two pet stores offer customers the opportunity to donate money, in dollar increments, to the local humane society at the register. The dot plots below show the amounts donated last week.
The variability at each pet store is 1.4. The difference between the mode amount donated at each pet store is approximately how many times the variability?
A. 3
B. 4
C. 2
D. 5
The computer lab at school has $110 to spend on blank compact disks for their CD ROMS. If 2 packages of disks cost $10 how many packages can the computer lab buy?
Answer:
22
Step-by-step explanation:
10/2 $5 per pack
110/5= 22 packs
Write the equation of the graph in slope intercept form
Answer:
1/2x+3
For the slope you have to on the 2,2 you have to go up and over to the next dot on a line and for the y intercept you just have to find it on the line and if it was on the bottom do a -3 rather than a +3.
Plz help!!! You identify the error the solve it correctly!!!!!
Answer:
You have to multiply the numbers diagonally not vertically.
So
10x = 7(350)
10x = 2450
x = 245
9514 1404 393
Answer:
different sides of the equation were multiplied by different numbersx = 245Step-by-step explanation:
There is a method of solving proportions that is called "cross multiply" or "cross multiplication". For a proportion like this it looks like each numerator is multiplied by the opposite denominator. In this problem, the result would be ...
7(350) = (10)x
While "cross multiplication" is a description of the appearance of what is happening, what is really happening is that both sides of the equation are being multiplied by the same value: the product of the denominators. This is in accordance with the multiplication property of equality, which requires you multiply both sides of the equation by the same value.
__
The error that was made in this problem is that each numerator was multiplied by its own denominator. Effectively, that multiplied the left side of the equation by 10² = 100, and the right side of the equation by 350² = 122500. This is in direct violation of the multiplication property of equality, so guarantees the value found for x will be wrong.
__
While "cross multiply" is an instruction often given for solving proportions, it causes an extra step to be needed in solving a proportion like this one. All that is really needed is to multiply both sides of the equation by the denominator under the variable. Here, that means multiplying both sides of the equation by 350.
Correct solution
[tex]\dfrac{7}{10}=\dfrac{x}{350}\\\\350\cdot\dfrac{7}{10}=350\cdot\dfrac{x}{350}\\\\\\35\cdot 7=\boxed{x=245}[/tex]
Solve 2(x + 1) = 2x + 2.
All real numbers
No solution
0
1
Answer:
All real numbers
5x + 8 =33 what is the x
Please help, I need the answer:
Amber tried to evaluate an expression step by step
-3 - (-5) + 4
= -3 + 5 + 4
= -3 + 9
= 6
Find Amber’s mistake
Answer: she didnt get it wrong so its none of the above
Step-by-step explanation:i did it on khan if i got it right mark me brainliest pls
Which is the most appropriate unit to measure the amount of liquid in bottle A) fluid ounces B) cubic centimeters C) ounces D) cubic feet
Answer:
a
Step-by-step explanation:
Answer:
A) Fluid ounces
Step-by-step explanation:
Zander read 13 3/4pages in 1/4 of an hour. Sydney read 43 1/3 pages in 2/3 of an hour. At these rates, would Zander or Sydney read more pages in 1 hour?
Answer:
At these rates Sydney read 10 pages per hour more than Zander.
Step-by-step explanation:
Zander read [tex]13\frac{3}{4}[/tex] pages in [tex]\frac{1}{4}[/tex] of an hour.
Therefore, pages read by Zander in 1 hour = [tex]\frac{\text{Total pages read}}{\text{Total time taken}}[/tex]
= [tex]\frac{13\frac{3}{4}}{\frac{1}{4}}[/tex]
= [tex]\frac{55}{4}\times \frac{4}{1}[/tex]
= 55 pages per hour
Sydney read [tex]43\frac{1}{3}[/tex] pages in [tex]\frac{2}{3}[/tex] of an hours.
Pages read by Sydney in 1 hour = [tex]\frac{43\frac{1}{3}}{\frac{2}{3} }[/tex]
= [tex]\frac{130}{3}\times \frac{3}{2}[/tex]
= 65 pages per hour
Therefore, number of pages read more by Sydney as compared to Zander,
= 65 - 55
= 10 pages per hour
At these rates Sydney read 10 pages per hour more than Zander.
Find WX please help is very much appreciated
Answer:
WX = 6
Step-by-step explanation:
1. Approach
First, one must find the value of the variable (x). This can be done by using the Tangent-Line-intersection-theorem (many people refer to it by another name, but the theory is the same). This theory essentially states that when two lines are tangent to a circle and are non-parallel, the distance between the point of tangency, and the point of intersection of those two lines are the same for each line. After finding the value of (x), one can substitute it back into the given equation for the value of (WX), and solve it.
2. Finding (x)
The two segments; (WX) and (XY) are tangent to the given circle. Meaning that they only make contact with the circle at a single point. The space between their point of tangency and the point at which they intersect will be equal. Essentially meaning that the length of (WX) and the length of (XY) are the same. Therefore the equation
(XY) = (XW)
Can be formed. Substitute in the given values;
7x - 29 = 2x + 16
Inverse operations,
7x - 29 = 2x + 16
-2x -2x
5x - 29 = 16
+29 +29
5x = 45
/5 /5
x = 9
3. Solve for (WX)
Now substitute back in to find the length of (WX)
7x = 29
x = 5
7(5) - 29
35 - 29
6
Need Answers ASAP please!
PLEASE HELP
Why are some numbers not multiples of other numbers?
Answer:
If it's not a multiple of another number then for sure it's a factor
The diameter of a circle is 4 yards. What is the circle’s area?
Use 3.14 for pi
Answer:
12.566 yd
Step-by-step explanation:
Please help I’m in desperate need of it I will give brainliest
Answer:
I think its a student loan
Step-by-step explanation:
Answer:
studint loan
Step-by-step explanation:
dont have explination for this one
your science homework is 32 total problems. you complete 75% of the total problems before lunch. How many problems did you complete before lunch?
Answer:
24 problems
Step-by-step explanation:
32 x 0.75 = 24
Answer:
24
Step-by-step explanation:
75% of 32 =24
What would be the first step in solving the equation 7/9x + 34 = 174?
Answer:
[tex] \frac{7}{9} x + 34 = 174 \\ => \frac{7x}{9} = 174 - 34 \\ = > \frac{7x}{9} = 140 \\ = > 7x = 140 \times 9 \\ = > 7x = 1260 \\ = > x = \frac{1260}{7} = 180 \\ { \huge{ \pink{x = 180}}}[/tex]
❤️❣️❤️6 1 + 4 7 =start fraction, 1, divided by, 6, end fraction, plus, start fraction, 7, divided by, 4, end fraction, equals
9514 1404 393
Answer:
1 11/12
Step-by-step explanation:
[tex]\dfrac{1}{6}+\dfrac{7}{4}=\dfrac{2}{12}+\dfrac{21}{12}=\dfrac{2+21}{12}\\\\=\boxed{\dfrac{23}{12}=1\dfrac{11}{12}}[/tex]
PLEASE HELP PLEASEEEE!!! Number 3
Q3.
Simon has x sweets.
Yuen has 2 more sweets than Simon.
Giulia has 3 times as many sweets as Yuen.
Simon, Yuen and Giulia have a total of T sweets.
(a) Write down a formula for T in terms of x.
Give your formula in its simplest form.
Here is your answer!
= x + (x + 2) + 3(x + 2) = T
= (3x + 2) + (3x +6) = T
= 3x + 3x + 2 + 6 = T
= 6x + 8 = T
Hope you found this helpful!!
THANK YOU!
∝ Sidhdi
T = 5x + 8 is the formula for T expressed in terms of x.
What is inequality?A relationship between two expressions or values that is not equal to one another is referred to as "inequality" in mathematics. Therefore, an imbalance leads to inequity.
Given, Simon has x sweets. Yuen has 2 more sweets than Simon. Giulia has 3 times as many sweets as Yuen. Simon, Yuen, and Giulia have a total of T sweets.
From the given Data,
Thus, in Total sweets, Simon has = x
Total sweets Yuen have = x + 2
Total sweets Giulia have = 3*(x + 2 )
Since the total sweets all three have is T
Hence, T = x + x +2 + 3(x + 2)
T = x + x + 2 + 3x + 6
T = 5x + 8
Therefore, The formula for T in terms of x is T = 5x + 8
Learn more about inequalities here:
brainly.com/question/20383699
#SPJ2
PLEASE HELP AS SOON AS POSSIBLE PLEASE SHOW WORK AND HELP ME UNDERSTAND ASAP WILL GIVE BRAINLIEST
Answer:
y = 2x + 8
Step-by-step explanation:
Recall that two parallel lines have the same slope.
Thus, if we begin with y = 2x - 4, we know that this new line through (-1, 6) will also have slope 2.
Starting from the slope-intercept form y = mx + b, we substitute 2 for m, -1 for x and 6 for y:
6 = 2(-1) + b
and solve for the new y-intercept, b:
6 = -2 + b, or
b = 8
Then the new line has the equation y = 2x + 8
Find two integers whose sum is -2 and product is -80
Answer:
-10 and 8
Step-by-step explanation:
-10 + 8 = -2
-10 x 8 = -80
Answer:
x = -10 and y = 8
x = 8 and y = -10
A table is sold hire purchase. The sales price consists of deposit of $306 and six monthly instalments of $60 each. How much does a customer pay for the table?
Answer: $666
Step-by-step explanation: 306+ 60(6)= 666