Answer:
are you asking to convert to fractions and decimals?
1. .05 1/20
2..17 or 17/100
3. 7/2
On a standardized exam, the scores are normally distributed with a mean of 250 and
a standard deviation of 50. Find the 2-score of a person who scored 375 on the exam.
Answer:
the z-score is within 3
Step-by-step explanation:
first you got to take the standard deviation and add it to the mean since 375 is greater than 250. so the equastion would be
250+50=300+50=350+50=40
so the z-score for the value of 375 is within 3
Answer: 2
Step-by-step explanation:
z=\frac{x-\mu}{\sigma}
z=
σ
x−μ
z-score formula
z=\frac{300-250}{25}
z=
25
300−250
Plug in values
z=\frac{50}{25}
z=
25
50
Subtract
z=2
z=2
Divide
\text{They scored 2 standard deviations above the mean.}
They scored 2 standard deviations above the mean.
What is the radius, Diameter, Area, and Circumference of a 12 feet circle? (No links or fake answers, actually give me a right answer)
Answer:
12ft, 6ft, 36πft², 12πft
Step-by-step explanation:
Diameter: the distance across the circle - so 12ft
Radius: half the diameter = 0.5(12) = 6ft
Area: πr² = π(6)² = 36π ft² (substitute in 22/7, 3.14, or the exact value of π as fit)
Circumference: 2πr = πd = 12πft
if we buy 20 pickles what is the experimental probability of winning 5 or more tickets
Answer:
[tex]Pr = 0.66[/tex]
Step-by-step explanation:
Given
See attachment for complete question
Required
[tex]P(x \ge 5)[/tex]
From the attachment, we have:
[tex]S = 2 + 8 + 4+20+21+19+17+5+2+2[/tex]
[tex]S =100[/tex] ---- the sample size
Next, we list out all outcomes more than or equal to 5.
i.e.
[tex]x \ge 5[/tex]
5 is represented with the vertical blue rectangle (with frequency 21).
So, the other elements are to the right of frequency 21.
So, we have:
[tex]x \ge 5 = 21+19+17+5+2+2[/tex]
[tex]x \ge 5 = 66[/tex]
The probability is then calculated as:
[tex]Pr = \frac{x \ge 5}{S}[/tex]
This gives
[tex]Pr = \frac{66}{100}[/tex]
[tex]Pr = 0.66[/tex]
The owner of the stand pays $8 for each hat , $0.10 for each post card, and $0.50 for each magnet. Write and expression for the total cost of the items.
Answer:
Step-by-step explanation:
HELP PLS PLS IM BEGGING
Answer:
to every 3 buckets with a shovel there is 4 buckets without a shovel
Which number is included in the set of integers that when added to 24 gives a sum of less than zero? Select all that apply.
7
-2
4
3
0
9
Answer:
immma send you the link friend me on hereStep-by-step explanation:
Morgan correctly answered 90% of the questions on her history test. She answered 36 questions correctly How many questions were on the test?
(A)33
(B)40
(C)48
(D) 126
Answer:
(B)40
Step-by-step explanation:
use the mark given and divide it by 90 percent take the answer given and multiply it by one hundred
Answer:
B) 40
Step-by-step explanation:
If 90% = 36
100% = ?
Cross Multiplying
100 x 36/ 90 = 40
which means there were 40 Questions on the test.
Kamira's weekly salary is based on the number of pairs of shoes she sells. She is paid a base salary of $25, plus $5 for every pair of shoes she
sells. Which linear equation models this situation showing the relationship between her pay (p) and pairs of shoes (s) sold?
Answer: p= 5s + 25
Step-by-step explanation:
1.) The price of gasoline went from $3.60 to $2.70 per gallon. What was the percentage decrease in the price of gasoline per gallon?
A.) 20% decrease
B.) 22.5% decrease
C.) 25% decrease
D.) 33.33% decrease
E.) None of these choices are correct.
Answer:
Choice C
Step-by-step explanation:
3.60 - (3.60/2.70) = 25%
Simplify the expression using long division.
(412 - 13x - 4)+(-2)
A. quotient 4x - 13 and remainder 2 B, quotient 4x - 5 and remainder-6
C. quotient 4x +5 and remainder 6 D. quotient 4x - 5 and remainder
if i payed for something for my brother which was $15 and we we're gonna split it that i pay only $5 for it and he pays $10, how much money does he have to give me back?
Answer:
$10
Explanation:
If you only have to pay $5 of the $15 you gave him, he has to pay you 15-5 or $10 back.
Rewrite each expression: 2^4 x 2^6 x 2^2
Answer:
16 x 64 x 4
Step-by-step explanation:
2 x 2 x 2 x 2 = 16
2 x 2 x 2 x 2 x 2 x 2 = 64
2 x 2 = 4
Which function is the inverse of F(x) = b^x?
HELP FAST
Answer:I also think answer is 3
Step-by-step explanation:
Does anyone know how to solve this?
Answer:
17 meters
Step-by-step explanation:
Plug x=30 into the equation H(x) = 11 + 0.2x
H(30) = 11 + 0.2 * 30
H(30) = 11 + 6
H(30) = 17
Thus, the answer is 17 meters.
Help quick please, look at the photo I attached
Answer:
A ≈ 5.6
Step-by-step explanation:
The area (A) of the triangle is calculated as
A = [tex]\frac{1}{2}[/tex] × PQ × PR × sin P
= 0.5 × 5.2 × 2.8 × sin50°
≈ 5.6 ( to 1 dec. place )
Which situation can be represented by the equation y = 25x + 50?
A. A repairman charges $25 to come to the house and $50 for each hour he works.
B. Tom pays $25 a month for a health club membership. He also had to pay a $50 registration fee.
C. Sally has $25 in her savings account. She plans on depositing $50 from each of her paychecks into her account.
D. A school store started the year with 25 pencils. Each month they added 50 more to their inventory.
i need help with this problem
Answer:
evaluate parenthesis first:
67/100(consider 67% out of 100) x 119 = 79.73
Answer:
79.73
Step-by-step explanation:
First, it would be finding 67% of 119
Then we find 10% = 11.9 and 1% = 1.19
The 11.9 multiplied by 6 to equal 71.4 and 1.19 multiplied by 7 to equal 8.33
Then add 71.4 and 8.33 to get the answer of 79.73.
WILL MARK BRAINLIEST
Answer:
C
Step-by-step explanation:
50% = half and 5 out of 10 is also half, if you count how many samples it has it adds up to 7 so the answer is 7
What is the axis of symmetry of h(x) = –2x2 + 12x – 3?
a. x = –15
b. x = –3
c. x = 3
d. x = 15
We will see that the axis of symmetry is x = 3, so the correct option is c.
How to find the axis of symmetry of a quadratic function?
The axis of symmetry is a line of the form x = a, such that it divides the parabola in two halves.
Particularly, the axis of symmetry passes through the vertex, so the x-value of the vertex is equal to the value of the axis.
Then we only need to find the x-value of the vertex, remember that for a quadratic:
[tex]y = a*x^2 + b*x + c[/tex]
The vertex is at:
[tex]x = -b/2a[/tex]
Then in our case, the vertex is at:
[tex]x = -12/(2*-2) = -12/-4 = 3[/tex]
So the axis of symmetry is x = 3, then the correct option is C.
If you want to learn more about quadratic equations:
https://brainly.com/question/1214333
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please help like waaa everywhere it comes up that its impossible
Answer:
Step-by-step explanation:
If we subtract 7 from both sides, we get -2 on the right. This is not possible, since absolute values are always 0 or greater.
88 is what percent of 121??
Answer:
72.73% is the answer.
Hope this helps!
Karen is adding a border to a rectangular poster. The border will have a uniform width of X inches and run along all four sides, so Karen uses the functions land wto model the length and width, in inches, of her poster after she adds the border. l(x) = 2x+ 18 W(x) = 2x+ 24 Which function correctly represents the total area, in square inches, of Karen's poster, when a border x inches wide is included in the area?
A. A(X) = 4x + 432
B. A(X) = 4x2 + +42x + 432
C. A(x) = 4x2 + +84x + 432
D. A(x) = 4x + 432
Answer:
B. A(x) = 4x² + 42x + 432Step-by-step explanation:
The area is the product of the width and the length:
A(x) = (2x + 18)(2x + 24) = 4x² + 42x + 432Correct choice is B
the area of a regular hexagon is 100 units if all the dimensions were cut in half what would the new area be
Answer:
50 units most likely. I could be wrong. I am extrememly sorry if I am wrong.
Step-by-step explanation:
The fourth term of an exponential sequence is 108 and the ratio is 3 . Calculate the value of the eighth term of the sequence, calculate the sum of the first five terms of the sequence.
Answer:
8th term = 8748 , Sum of 5 terms = 484
Step-by-step explanation:
Formula for nth term in an exponential sequence = a r^ (n-1)
Here : n = 4 , ratio r = 3 ; And nth ie 4th number = 108
So, a r^ (n-1) = nth item implies that → a 3 ^ (4-1) = 108
a 3^3 = 108 → 27 a = 108 → a = 108 / 27 → a = 4
8th term = a r^ (n-1) , at n = 8. So, = 4 3^(8-1) = 4 3^7 = 4 x 2187 = 8748
Sum of n terms = a [(r^n) -1 ] / [r - 1] → Sum 5 terms = 4 [ (3^5)- 1] / [3 - 1]
= 4 [ (243) - 1] / 2 ] = 2 x 242 = 484
HELP NEEDED ASAP!!! FASTEST CORRECT ANSWER GETS BRAINIEST!!!
Determine which of the following sampling methods is the best way to select a group of people for a study if you are interested in making statements about the larger population?
•Convenience sampling
•Random sampling
•Purposive sampling
•Quota sampling
Answer: C. Purposive Sampling
Step-by-step explanation:
This sampling is the use of a portion of the population to represent the whole or larger population. If you wanted to make statements about the larger population this would be the best way to go about it.
100 m
100 m
120 m
Which is the height of the triangle?
O A. 40 m
B. 60 m
O C. 80 m
D. 100 m
O e 110 m
B. 60 m is the height of the triangle
Answer:
B. 60m
Step-by-step explanation:
i took the test
10 in
a
8 in
B
Can someone please help me
Answer:
4 in use pythagorean theorem
Step-by-step explanation:
2x + 19 and x + 23 are alternate exterior angles. What is the value of x? *
A value of x of 4 guarantees that the angles 2 · x + 19 and x + 23 could be alternate exterior angles highlighted between two parallel lines.
How to solve a linear equation
If two angles are alternate exterior, then both angles have the same measure. Thus, we have the following expression:
2 · x + 19 = x + 23 (1)
Now we proceed to solve for x:
x = 4
A value of x of 4 guarantees that the angles 2 · x + 19 and x + 23 could be alternate exterior angles highlighted between two parallel lines.
To learn more on linear equations: https://brainly.com/question/14695009
#SPJ1
A value meal package at Ron's Subs consists of a drink, a sandwich, and a bag of chips. There are 6 types of drinks to choose from, 3 types of sandwiches, and 4 types of chips. How many different value meal packages are possible?
Maddy takes the bus to school from her house. She rides the bus 12 kilometers east
then turns north and goes 5 more kilometers. If she'd go the shortest distance, how
many kilometers would she save?
(Hint: Draw it out)
Answer:
She would save 4 kilometers
Step-by-step explanation:
Use pythagorean theorem
12² + 5² = 169
[tex] \sqrt{169} = 13[/tex]
17-13 = 4