Answer:
[ Because those two numbers are removed you need to reduce the number of terms to 98. ]
☆Solution☆
N=100
Mean=65
(Wrong Numbers=40,50)
Now,
Mean=Sum/No. of items
or,65=Sum/100
▪Sum=65×100=6500
After removing the unnecessary numbers,
New Sum=6500-40-50=6410
New no.of terms(N)=100-2=98
Now,
New Mean=New Sum/New N
=6410/98
=65.41
Ans.
Step-by-step explanation:
What is the median of the data set? 15, 19, 20, 22, 26, 30, 31
O A. 15
O B. 31
O c. 22
O D. 7.
Answer:
C. 22
Step-by-step explanation:
The median is the middle number of the set if the numbers are in order from least to greatest.
This set of numbers is in order, so the median is the middle number = 22
A car is on sale for R 95 850.If a deposit of 9 580 is paid ,how much is still owed on the car ?
Answer:
Step-by-step explanation:
95 850-9 580=86270
R 86 270 is still owed for the car
Hope it helps!
:D
Help on this plzzz:(:((
C, none of the above i believe
2) Evaluate (-9.2) + (7.5) = O -16.7 O 16.7 0 -1.7 1.7
Answer:
C. -1.7
Step-by-step explanation:
The data in this question will be utilized for the next three questions. The number of pets a group of students have are given below.Solute deviation?
Question
The data in this question will be utilized for the next three questions. The number of pets a group of students has, are given below.
Number of pets: 0-2 2-4 4-6 6-8 8-10 10-12 12-14
Number of students: 1 2 1 5 6 2 3
Calculate
(1) Mean (2) Sample Variance (3) Sample Standard Deviation
Answer:
[tex](1)[/tex] [tex]\bar x = 8.1[/tex]
[tex](2)[/tex] [tex]\sigma^2 = 6.341[/tex]
[tex](3)[/tex] [tex]\sigma = 2.518[/tex]
Step-by-step explanation:
Given
The above data
First, we calculate the class midpoint (x)
Pets: [tex]0-2[/tex] [tex]2-4[/tex] [tex]4-6[/tex] [tex]6-8[/tex] [tex]8-10[/tex] [tex]10-12[/tex] [tex]12-14[/tex]
x 1 3 5 7 9 11 13
f: 1 2 1 5 6 2 3
The class midpoint (x) is calculated by the average of each group.
For pets: 0 - 2.
[tex]x = \frac{0 + 2}{2}= \frac{2}{2} = 1[/tex]
The same is done for other groups.
Solving (a): Mean
[tex]\bar x = \frac{\sum fx}{\sum f}[/tex]
This gives:
[tex]\bar x = \frac{1 * 1 + 3 * 2 + 5 * 1 + 7 * 5 + 9 * 6 + 11 * 2 + 13 * 3}{1 + 2 + 1 + 5 + 6 + 2 + 3}[/tex]
[tex]\bar x = \frac{162}{20}[/tex]
[tex]\bar x = 8.1[/tex]
Solving (b): Sample Variance
This is calculated as:
[tex]\sigma^2 = \frac{\sum(x_i - \bar x)^2}{\sum f - 1}[/tex]
So:
[tex]\sigma^2 = \frac{(1 - 8.1)^2+(3 - 8.1)^2+(5 - 8.1)^2+(7 - 8.1)^2+(9 - 8.1)^2+(11 - 8.1)^2+(13 - 8.1)^2}{20 - 1}[/tex]
[tex]\sigma^2 = \frac{120.47}{19}[/tex]
[tex]\sigma^2 = 6.341[/tex]
Solving (c): The sample standard deviation
This is calculated as:
[tex]\sigma = \sqrt{\sigma^2[/tex]
[tex]\sigma = \sqrt{6.341[/tex]
[tex]\sigma = 2.518[/tex]
The equation 3x + 7y = 105 represents the number of bags of sand (x) and bags of mulch (y) that can be bought with $105. If no bags of sand are bought, how many bags of mulch can be bought with $105?
Show work to support your answer.
Answer:
15 bags
Step-by-step explanation:
3(0) + 7y=105
7y=105
y=15
What is the answer to this question?
6x - 6 < 12
Answer:
X<3
Step-by-step explanation:
6x−6+6<12+6
6x<18
Step 2: Divide both sides by 6.
6 divded by 6 = 1
18 divided by 6= 3
therefore the answer would be
X<3
Answer:
x = 1 or less
Step-by-step explanation:
12 - 6 = 6
6x = 6 or less
Divide each side by 6:
6x/6 = 6 or less/6
x = 1 or less
Can anybody help me please
Answer:
(2,5)
Step-by-step explanation:
It's the coordinates of the point where the lines cross
Answer:
4=7
Step-by-step explanation:
because you have to look down where the arrows are pointing. I hope you pass whatever your taking!
6
Evaluate the questions below and select the statistical ones.
A
How many goals are hit in a Soccer match?
B How many goals did Pele hit for Brazil in his career?
C
How many goals were hit in Final game the 2010 Soccer World Cup?
Answer:
Step-by-step explanation:
Helppp show work for brisnly
Answer:
18
Step-by-step explanation:
3/4 x 24 = 18
Simplify 2x + 2y - x + 4 - 1 + 3x + 2y + 7
What are all of the parallelogram theorems
last week maria ran 16.4 miles more than Kathryn. Maria ran 30 miles. How many did Kathryn run ?
Can someone pls help meee
Answer:
23°
Step-by-step explanation:
straight line=180
82+24+51=157
180-157
what is 4/3 divided by 1/5
Answer: photo
Step-by-step explanation:
I WILL GIVE BRAINLY
[tex]x^{2} +9y^{2} =1[/tex] is an ellipse. The line y=mx+2 is tangent to the ellipse. Determine the value of ([tex]m^{2}[/tex]). Express your answer as an integer or as a common or improper fraction.
9514 1404 393
Answer:
m^2 = 35/9
Step-by-step explanation:
The line will be tangent to the ellipse where there is one point of intersection between the line and the ellipse. We can find that case by looking at the discriminant of the quadratic.
x^2 +9(mx +2)^2 = 1
x^2 +9(m^2x^2 +4mx +4) = 1
(9m^2 +1)x^2+36mx +35 = 0 . . . . subtract 1, collect terms
__
Then the discriminant is ...
(36m)^2 -4(9m^2 +1)(35)
We want it to be zero, so we have ...
1296m^2 -1260m^2 -140 = 0 . . . . eliminate parentheses
36m^2 = 140 . . . . . . . . . . . . . . . add 140
m^2 = 140/36 . . . . . . . . . . . . divide by 36
m^2 = 35/9
Triangle QRS was dilated using the dilation rule DP,4.
Point P is the center of dilation. Triangle Q R S is dilated to create triangle Q prime R prime S prime. The length of P R is 3.
What is PR'?
6 units
9 units
12 units
15 units
Using the dilation rule, the length of P'R' is: C. 12 units.
What is Dilation?Dilation, as a type of transformation, is the enlargement or reduction of a shape to create a new image which is similar to the original image.If the scale factor is a whole number, it means it's an enlargement, if fraction, it means it is a reduction.Given that the scale factor of dilation is 4, and PR is 3.
Therefore:
P'R' = 4(PR)
P'R' = 4(3)
P'R' = 12 units.
Therefore, using the dilation rule, the length of P'R' is: C. 12 units.
Learn more about dilation on:
https://brainly.com/question/10253650
Answer:
Its c (12)
Step-by-step explanation:
Edge
Find sin A, cos A, and tan A as
a fraction in simplest form.
Answer:
sin A = [tex]\frac{15}{17}[/tex]
cos A = [tex]\frac{8}{17}[/tex]
tan A = [tex]1\frac{7}{8}[/tex]
Step-by-step explanation:
sine = [tex]\frac{ooposite}{hypothenuse}[/tex]
sine A = [tex]\frac{15}{17}[/tex]
cosine = [tex]\frac{adjacent}{hypothenuse}[/tex]
cos A = [tex]\frac{8}{17}[/tex]
tan = [tex]\frac{opposite}{adjacent}[/tex]
tan A = [tex]\frac{15}{8} = 1\frac{7}{8}[/tex]
If quadrilateral JKLM is a rhombus, find m
PLEASE Help ASAP!!!!!!!!!!!!!!!!!!!!!Tyson has a 50$ gift card to use at a store. He does not have additional money to spend at the store. Tyson will purchase a belt that costs $8 and x number of shirts that cost 15$ each. The function f(x) = 42-15x models the balance on the gift card after Tyson makes the purchases. What is the most appropriate domain of the function?
Answer:
multiply that what my teacher said do
Step-by-step explanation:
I'd be happy if you could help!
Step-by-step explanation:
Circumference=22π
2πr=22π
r=11 in.
Area=121π in.²
Hope it helps you
1) What is the difference? Complete the equation.
-2 – 8= ?
Answer:
-2 -8 is -10 because we’re subtracting 8 out of -2
brainliest please
Answer:
-10
Step-by-step explanation:
-2 - 8 = -10
When you subtract a negative, the minus sign becomes a plus sign and the negative number becomes positive.
Hope this helps!
Help please.................
Help ASAP please! ill mark brainliest
Answer:
8 pints 3 people
Step-by-step explanation:
13 x's therefore 13 people participate
8 is the median
Therefore the answer is D
Help with the attachment please it would be so much help!!!!
Answer:
angle BED and angle DEB are the answers.
Hi! I was putting up a test on other people with this question and i wanted to see if anyone solves this correctly? PLEASE ANSWER ASAP
Answer:
Assuming the shape is a half-circle, there's two right angles.
Step-by-step explanation:
The angle between the straight segment and the half-circle can be measured by taking a tangent line at the intersection point and it will of course be perpendicular to the straight segment, assuming the segment is the diameter of the circle).
find the whole quantity if 5 percent of it is 500
Answer:
10,000
Step-by-step explanation:
500/0.05= 10,000
You take the amount you are given divided by the decimal form of the percentage you are given to find the answer. It's a reverse from the way you find 5% of 10,000.
0.05=5%
Check your work: 10,000*5%= 500
1. How much profit will the company make under each of the following scenarios? (1) sell
10 pairs of jeans at full price for $100; (2) sell 15 pairs of jeans at a discount for $80; or (3) sell
25 pairs of jeans at full price for $100 by spending $500 on promoting the brand. Which
scenario would be most profitable?
(SHOW WORK)
Answer:
1st scenario comes up to 1000 dollars.
2nd scenario 1200 dollars
3rd is 2000 dollars.
This makes the third scenario most profitable.
Step-by-step explanation:
Help please thank you!
HOW DO U FIND THE ORTHOCENTER???
Answer:
Here i can explain it
Step-by-step explanation:
mark me as brainliest pls 簿絵時ぇ