Step-by-step explanation:
So basically you're going to start with your (expected value - observed value) squared
(O-E)²
You're then gonna divide that by your expected value that you just used
(O-E)²/E
A group of five friends goes to a show each ticket cost nine dollars and the friends share popcorn the cost six dollars which shows the total cost?
Answer:
9x5+6
Step-by-step explanation:
5 people x $9 ticket + the $6 popcorn
If the ratio of tables to chairs in the school cafeteria is 2 to 5 and there are 154 total objects, how many chairs are there?
A) 110
B) 44
C) 116
D) 120
Will give BRAINLIST
Answer: The ratio of tables to chairs is 44 chairs.
if the length of the longest side of the rectangle is 20cm find the shaded area to the nearest hundredth PLEASE HELPP !
Answer:
150pi
Step-by-step explanation:
lets just say the two circles are 10 and 10 in diameter. so, one square is 5 radius. The square is 25pi area. so two are 50pi area. the area of the rectangle is 200, so 150pi
Please tell me if I'm wrong D:
The combined area of a pair of congruent rectangles can be represented, in square units, by the expression 18y^2-818y 2 −8. The length and side of each rectangle can be represented as a difference of squares. What is the perimeter of one of the rectangles?
Answer:
[tex]Perimeter = 12y[/tex]
Step-by-step explanation:
Given
[tex]Area = 18y^2 - 8[/tex] -- two rectangles
Required
Determine the perimeter of one of the rectangles
First, calculate the area (A) of 1 rectangle
[tex]A =\frac{1}{2}Area[/tex]
[tex]A =\frac{1}{2}(18y^2 - 8)[/tex]
[tex]A =9y^2 - 4[/tex]
Express as difference of two squares
[tex]A =(3y - 2)(3y+2)[/tex]
Area is calculated as:
[tex]A = Length * Width[/tex]
So, by comparison:
[tex]Length = 3y - 2[/tex]
[tex]Width = 3y + 2[/tex]
The perimeter is:
[tex]Perimeter = 2 *(Length + Width)[/tex]
[tex]Perimeter = 2 *(3y-2+3y+2)[/tex]
Collect Like Terms
[tex]Perimeter = 2 *(3y+3y-2+2)[/tex]
[tex]Perimeter = 2 *(6y)[/tex]
[tex]Perimeter = 12y[/tex]
Carson drew a line perpendicular to the x-axis through (7,-3). What is its equation and its slope?
Answer:
equation is x = 7
slope is undefined
Step-by-step explanation:
Answer:
perpendicular to the x-axis means a vertical line. So, all of its points have x-coordinate of 7
The slope of vertical lines is undefined.
Step-by-step explanation:
9/14 decimal rounded to the nearest hundredth
Answer:
It's 0.64 you really couldn't just look this up?
Step-by-step explanation:
just put 9 divided by 14 in your calculater and round
8th grade math, please help.
Answer:
x=25
Step-by-step explanation:
It is because it alternates with the angel m<25⁰
HOPE IT HELPS
Answer:
X=, 25°
Because alternative interior angles are equal
At a certain time of day, the sun causes objects to cast shadows at a 65° angle with the ground. At this time of day, a flagpole
casts a shadow that is 9 feet long. How tall is the flagpole to the nearest foot?
A.4 feet
B.7 feet
С.8 feet
D.19 feet
Answer:
D 19 feet
Step-by-step explanation:
Let x = height of flagpole
tan 65 = x/9
9tan 65 = x
x = 19.3 ≅ 19 ft. to the nearest foot
Ruby is buying chocolates for her friends. The candy store charges $13.80 for a box of chocolates, and each additional piece of chocolate costs $0.23. Ruby has $21 to spend. She buys x additional pieces along with a box of chocolates.
Which inequality correctly represents the given situation?
A.0.23x + 21 ≤ 13.8
B.13.8 + 21 ≤ 0.23x
C.13.8 + 0.23x ≤ 21
D.13.8 + 0.23x ≥ 21
Answer:
C
Step-by-step explanation:
Answer:
C.
Step-by-step explanation:
hope I helped!!
Let me know if you need an explanation:)
Find the slope of the line passing through the points (7, 7) and (7, -8) find the slope of the line passing through the points (-6, 7) and (9, 7)
Step-by-step explanation:
to work out gradient
change in y ÷ change in x
first lines gradient
(7 - - 8) ÷ (7 - 7) = 0
second lines gradient
(7 - 7) ÷ (9 - - 6) = 0
Maggie has $15.00 and will begin earning an allowance of $10.00 per week. Jess has $5.00 and will begin earning an allowance of $15.00
per week.
When will maggie and jess have the same amount of money and how much money will they have?
PLEASE HELP
Mr Nicolo goes on a diet. At the start of the diet he weighs 89.2 kg. He wants to weigh 72.5 kg.
After one month he has lost 4.6 kg. How much more does he have to lose?
Answer: 80.6 kg
Step-by-step explanation:
Titus and Theresa have collected money and are buying food for a dog shelter. Titus buys 2 bags and 5 cans of dog food, spending $17.50. Theresa buys 6 bags and 2 cans of dog food for $40.80. Let x represent the price of a bag of dog food and y represent the price of a can of dog food. Write a system of equations and use the elimination method to find a reasonable price for a can of dog food.
A)$0.90
B)$1.70
C)$6.30
D)$6.50
2x + 8y = 28
2x + 8y = 29
e?
Answer:
The question is unclear. what is e?
Given isosceles ABC, median BD to base AC. Prove ADB=CDB. AB=, AD=, BD=, ADB=
PLEASE GIVE IN A STATEMENT REASON
Answer:
1. AB=CB def of isosceles triangle
2. AD=CD DEF of median
3. BD=DB reflexive property
4. ADB=CDB SSS
Step-by-step explanation:
ummmm its just the right answer trust
Answer: 102
Step-by-step explanation: math
plz help
use The information provided to answer the following questions
Let f(x) = -x + 3
Find f(2)
f(3)=
Answer:
1
Step-by-step explanation:
f(2) = -2+3
=1
Find the measure of the indicated angle to the nearest degree
A) 18°
C) 48°
B) 42°
D) 26°
Answer:
The answer is option C
Step-by-step explanation:
To find the indicated angle we use sine
sin ∅ = opposite / hypotenuse
From the question
The opposite is 37
The hypotenuse is 41
So we have
sin ? = 37/41
? = sin-¹ 37/41
? = 64.4805
? = 64° to the nearest degree
x^(2)-7x=44 solve for x-intercepts.
Answer:
-4, 11
Step-by-step explanation:
X-intercepts occur at y=0:
x^2-7x-44=0
(x-11)(x+4)0
so we have -4 and 11.
Henry picked 278 pears. He is putting the pears in a boxes that each hold 50 pears how many boxes will be able to fill completely
Answer:
278 divided by 50 is about 5 and a half so 5 would be your answer because he is completely filling 5 boxes.
In PITI what does P stand for?
O A. Principal
O B. Prepayment
O C. Payment
O D. Penalty
Answer:
O A. Principal
Step-by-step explanation:
happy to help ya :)
Find AE if AB=12, AC=16, and ED=5.
Answer:
the ratio is 12:16=3/4
So AE:5+AE=3/4
4AE=15+3AE
AE=15
Step-by-step explanation:
The length of the line segment AE is 15 units.
What is a triangle?A triangle is a three-sided closed-plane figure formed by joining three noncolinear points.
Based on the side property triangles are of three types they are Equilateral triangle, Scalene triangle, and Isosceles triangle.
We know, In a triangle if one segment is parallel to one side of a triangle divides the other two sides in the ratio of their corresponding lengths.
Given, AB = 12, AC = 16 and ED = 5, hence BC = AC - AB = 4.
Therefore, AB/BC = AE/ED.
12/4 = AE/5.
4AE = 60.
AE = 15 units.
learn more about triangles here :
https://brainly.com/question/2773823
#SPJ2
I need help on this question please!
Answer:
150
Step-by-step explanation:
5^2=25
6 times 25=150
Hope I helped!
Pleaseee helpp answer correctly !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!
Answer:
4
Step-by-step explanation:
In a parallelogram AO and OC are equal. Therefore you should set up the equation 3x-4=8. When you add 4 to both sides you get 3x=12. When you divide both sides by 3 you get x=4
need help................
827537517172763 kahvxjx
Help plzz and It's continue of math
Homework: Compound Probability (Without Replacement)
2.) There are three nickels, four dimes, and four quarters in your pocket. You randomly pick three coins and place them on a counter. The first coin is a nickel, the second is a dime, and the third is a quarter.
3/110, 8/165, 1/64, 10/273
3.) A box of chocolates contains four milk chocolates and six dark chocolates. You randomly pick a chocolate and eat it. Then you randomly pick another piece. The first piece is milk chocolate and the second piece is dark chocolate.
4/15, 5/18, 5/22, 3/110
Answer:
For number 2: 8/165
Step-by-step explanation:
The total number of coins = 11 ( 3 + 4 + 4 = 11).
The probability of picking a nickel first = 3/11 ( 4 nickels out of 11 total).
The probability of picking a dime second = 4/10 = 2/5 ( 3 dimes out of 10 coins left).
The probability of picking the third coin as a quarter = 4/9 ( 3 quarters out of 9 coins left).
I don't know the other problem, sorry.
Answer:
2) 8/165
3) 4/15
Step-by-step explanation:
2) P(N,D,Q) = 3/11 x 4/10 x 4/9
3) P(M,D) = 4/10 x 6/9
Solve the equation. Check your solution and show all your work.
very confused about this and how to execute it to be honest
Answer:
t = 19 1/4
Step-by-step explanation:
24 1/2 = t + 5 1/4
49/2 = t + 21/4
t + 21/4 = 49/2
t = 49/2 - 21/4
t = 98/4 - 21/4
t = 77/4
t = 19 1/4
the crowd at a sporting event is estimated to be 3000 people. the exact attendance is 2486 people. what is the percent error? pls help :)
Answer:
%error is the difference between the expected and actual 3000-2486=514 514/3000= 17.33% errorPleasee helpp answer correctly !!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!
Answer:
x = 67º
Step-by-step explanation:
the sum of two angles on the same side = 180º so
x + 113º = 180º subtract 113º from both sides
x = 67º
Is a 20% markup equal to a 20% markdown
Answer:
no
Step-by-step explanation:
Answer:
no because markup is going up/ increasing and markdown is going down (decreasing)
Step-by-step explanation: