Answer:
A U { } = A
Step-by-step explanation:
Union is one of the operations that are performed on sets. In union, the elements of involved sets are combined and repetitive elements are removed (written only once)
Given
A U { } = ?
Whenever union will be taken of any set and empty set the answer will be the set.
Similarly, when union of set A will be taken with empty set the result will be set A.
Hence,
A U { } = A
my grade right now is a 79.7 percent this is my final grade but my teacher said I can do extra credit which is 10 points. If I do extra credit could I reach 80 percent?
Answer: Yes you can.
Step-by-step explanation:
Any common formative can boost up a grade my 0. anything. If you do extra credit, your grade will boost up to an 80 overall.
Answer:
Yes definitely so do the extra credit.
Step-by-step explanation:
Scale down the ratio 385/7 = ?/1
Answer:
55/1.........................
The students in Mr. Thomas' class are having a car wash. They plan
to wash 3 SUVs for every 5 cars. How many SUVs will they wash if they wash 20 cars?
Given: QS bisects ∠TQR; TQ ≅ RQ. Prove: ΔQRS ≅ ΔQTS Triangles Q T S and Q R S are connected at side Q S. Line Q S bisects angle T Q R. The lengths of sides Q T and Q R are congruent. Complete the missing parts of the paragraph proof. Proof: We know that segment QS bisects angle TQR because . By the definition of angle bisector, angle TQS is congruent to angle . We see that segment QS is congruent to segment SQ by . Therefore, we can conclude that triangles QRS and QTS are congruent by .
Answer: it is given, RQS, the reflexive property, and SAS
Step-by-step explanation: just did it
Answer:
We know that segment QS bisects angle TQR because IT IS A GIVEN. By the definition of angle bisector, angle TQS is congruent to angle RQS. We see that segment QS is congruent to segment SQ by the REFLEXIVE PROPERTY. Therefore, we can conclude that triangles QRS and QTS are congruent by SAS.
Step-by-step explanation:
May I have brainliest please? :)
is 1/2 equel to 0.5%
Answer: yes
Step-by-step explanation:
solve the equation by factoring x^3+17x= -72
can someone please help me please and thank you
Answer:2, 1, (in place of x) and y2
Step-by-step explanation: Divide your base numbers, which are 18 and 9, so you get 2. Then because you're dividing with exponents you are just subtracting them. So x 2-2 (Imagine these as exponents) so you'd get x0. Next you'd do the same with y so you'd end up with y2. Because your exponent is 0 on x it equals one.
y=−2x+6y, equals, minus, 2, x, plus, 6?
Answer:
y24
Step-by-step explanation:
Answer:
y24
Step-by-step explanation:
3 1/3 x 5 1/4 x 1 1/5 Find the product of these 3 mixed numbers PLEASE SHOW ALL THE WORK
What is the simplified expression for the expression below?
7(x – 4) – 3(x + 5)
4x – 43
4x + 1
4x – 13
4x – 9
Answer:
Step-by-step explanation:
7(x-4)-3(x+5)
7x-28-3x-15
4x-43
Answer:
4x-13
Step-by-step explanation:
7x-28-3x+15
7x-3x-28+15
4x-13
1.
Out of a group of 60 students, 24 are boys. What percent of the students are boys? (5 points for work and 5 points for answer)
Answer:
40%
Step-by-step explanation:
The first step is to write 24 as a fraction of 60, which is simply
24/60
In order to find the simplest form of the fraction 24/60 we cancel out the greatest common divisor of 24 and 60, which is 12 :
24/60=2/5
Now we just need to convert this fraction to a percentage :
2/5 = 40
You own a flower shop. You regularly order roses and carnations and want to check the pricing. You cannot find the pricing information but have these invoices.
10 boxes of carnations 5 boxes of roses
12 boxes of carnations 10 boxes of roses
total 370$ total 225$
Write and solve a system of equations to find the price of each box of roses and carnations. Be sure to define your variables.
Answer: One box of carnations costs $10 and one box of roses cost $25.
Step-by-step explanation: You will have three variables in this; c for carnations, r for roses, and t for total. Your equation will look like this: 10c+25r=t; The ten and twenty-five are the amount it costs for one box of carnations and roses.
Three numbers are in ratio 2:5:7.
The middle number is 75. What are the other two numbers?
Answer:
First number - 30
Second number - 105
Step-by-step explanation:
2/5 of 75 would be 30, so it is the answer.
7/5 of 75 would be 105, so it is the answer.
This is how you would solve this problem.
y+4x=-5
2y=-8x-20
Is it no solution or exactly one solution?
PLS HELP
Answer:
there are no solutions in the equation :)
The sum of the numbers from 1 to 10 is 55. The sum of the numbers from 11 to 20 is 155. The sum of the numbers from 21 to 30 is 255. Based on this pattern, what is the sum of numbers from 91 to 100?
A. 855
B. 955
C. 1055
D. 1155
Answer: B
Step-by-step explanation:
What is the answer ? (Evaluate if x=6, y=8, and z=3)
5x - (y + 2z)
The solution of the expression is 5x - (y + 2z) is 16.
Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that the expression is 5x - (y + 2z). the values are x=6, y=8, and z=3. The expression will be solved as:-
E = 5x - (y + 2z)
E = ( 5 x 6 ) - ( 8 + 2 x 3 )
E = 30 - ( 8 + 6 )
E = 30 - 14
E = 16
Hence, the value of the expression is 16.
To know more about an expression follow
https://brainly.com/question/723406
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1. Suzie had d DVDs. Her mother bought her 39 more DVDs.
2. Dave pays 10$ each month plus 2$ for every hour he practices in a music class. Write an expression to find the total amount paid for t hours
3. The cost to rent a party plot is $50. If the cost of food per person is 5$. Write an expression to find the total cost if there are n people invited for the party
4. If the side length of a square is x cm. Write an expression to find the perimeter of a square.
5. The cost of a pizza is 8$. If every extra topping costs $2, write an expression to find the total cost with n extra toppings
6. A phone company provider charges $25 as registration fee and $15 every month. Write an expression to find the total cost after t months
7. There are n hockey players. Write an expression to find the total number of hockey sticks if each player has 4 sticks
8. Let n represent any term number.
Write a relation for the term for each number pattern.
9. An equilateral triangle has three equal sides.
Write a relation for the perimeter of an equilateral triangle with side length k.
What is the perimeter of an equilateral triangle with side length 15 cm?
10. The cost of soccer jerseys for the soccer team is $50 for the initial set-up, plus $15 for each jersey ordered.
a) Write a relation for the total cost of j jerseys.
b) Another company charges $80 for the initial set-up, and $12 per jersey. Write a relation for the total cost of j jerseys for this company.
c) Which company would charge less if you ordered 12 jerseys?
11. Suggest a real-life situation that could be represented by each relation.
a) n + 7 is related to n
b) 4s + 5 is related to s
12. There are n students in the concert band.
Write a relation for each statement.
a) the total number of music stands, if each pair of students shares one stand
b) the total number of chairs, if there are 4 more chairs than students
c) the total number of sheets of music, if each student has 7 sheets
please. help meee :(((
Answer:
1. The expression that represents the total number of DVDs Suzie has is d + 39
2. The expression for the amount Dave pays for t hours of practice in a month is 10 + 2 × t
3. The expression for the total cost for n people invited for the party is $50 + $5 × n
4. The expression for the perimeter of a square with side length, x is 4 × x
5. The expression for the total cost of pizza with n extra toppings is $8 + $2 × n
6. The expression for the total cost in phone charges after t months is $25 + t × $15
7. The expression for the total number of hockey sticks for n players is 4 × n
8. The relation that represent the term for each number pattern is given as follows;
Value = nth term of number
9. The relation for the perimeter of an equilateral triangle with side length k is given as follows;
Perimeter of an equilateral = 3 × Side length
∴ Perimeter of the given equilateral triangle = 3 × k
When k = 15, we have;
Perimeter of the equilateral triangle = 3 × 15 cm = 45 cm
10. a) The relation for the total cost of j jersey is $50 + $15 × j
b) The relation for the total cost of j jersey by the other company is $80 + $12 × j
c) The charges for 12 jerseys by the first company is $50 + $15 × 12 = $230
The charges for 12 jerseys by the first company is $80 + $12 × 12 = $224
Therefore, the second company will charge less if 12 jerseys are ordered
11. The real life situation that could be represented by each relation are;
a. n + 7
For every mass in grams of goods bought, n, we get a 7 gram mass of packaging
b. 4s + 5
The distance from a point covered by jogging at 4 m/s after s seconds while starting at 5 meters away from the point in the direction of jogging
12. a) The relation for the total number of music stand is n/2
b) The relation for the total number of chairs is n + 4
c) The relation for the total number of sheets of music is 7 × n
Step-by-step explanation:
Help!!!!
Given log73≈0.5646 and log716≈1.4248, evaluate the expressions.
Answer:noooo
Step-by-step explanation:
Answer:
a) 0.356
b) 1.1397
Step-by-step explanation:
a) log₇2
log(2) / log(7) 0.356b) log₇ (¹⁴⁷/₁₆)
log (¹⁴⁷/₁₆)log (7)
1.1397Ms. Miller was jogging at a constant rate of 6 miles per hour. After 3 hours, she was 15 miles away from her home. How far away from her home did she begin her jog? (Hint: you have a slope and a point. Plug them in to find her starting value).
Answer:
3 miles away from the house
Step-by-step explanation:
6 * 3 =18
18 - 15=3
HELPP WILL MARK BRAINIEST Function 1 is defined by the equation y = Function 2 is defined by line q, shown on the following graph Which function has a greater slope?
function 1
function 2
functions have the same slope
Answer:
Function 1
Step-by-step explanation:
That is what i did in khan and i got it right
Sam earned $450 during winter vacation. He needs to save $180 for a camping trip over spring break. He can spend the remainder of the money on music. Write an inequality to show how much he can spend on music
Answer:
270
Step-by-step explanation:
id you subtract 180 from 450 equals 270
If an animal has four legs, then the animal is a horse.
Is this true or false?
If the statement is false, provide a counter example.
Please help! I’ll give brainliest!!!
This is false.
Step-by-step explanation:
there are a lot of different animals with 4 legs such as a dog, cat ,cow, lion etc.
Hope I helped:)
Prove that (4n+1)^2(4n-1)^2 is a multiple of 8 for all integers of n.
thanks.
Answer: i think (4n+1)^2(4n-1)^2 isnt a multiple of 8 for all integers of n because:
(4n + 1)²(4n - 1)²
= [(4n + 1)(4n - 1)]²
= (16n² - 1)²
= 16².n².n² - 2.16.n² + 1
= 8n²(32n² - 4) + 1
can see 8n²(32n² - 4) is a multiple of 8 but 1 isnt a multiple of 8
=> (4n + 1)²(4n - 1)² isnt a multiple of 8 for all integers of n.
Step-by-step explanation:
50 points. Only solve 6-10. And show work
Answer :
6 : Margaret has 30 50-cent coins and 26 10-cent coins
let 'x' represent the number of 50-cent coins, then '56-x' represents the number of 10-cent coins
17.60 = 0.5x + 0.1(56-x)
solving for 'x' we have x=30
56-30 = 26
7 : Total money = $29.40
mich money = m dollar,
amy money = (3/4)m dollars,
Total = m + 3m/4 = 29.40,
4m+3m = 4*29.4,
7m = 117.6,
m = 117.6/7 = 16.8
Hence,
Michelle's money = $16.80
Amy money = $12.60
8 : (a) The amount of milk in a carton is normally distributed with a mean of 260 millilitres (mL) and a standard deviation of 8 mL. Every milk carton is labelled with the serving size as 250 mL. (i) What is the probability that a randomly selected carton has more than the labelled serving? [3 marks) (ii) Determine the amount of milk in a carton for which only 7.08% of cartons fall below this amount. [3 marks (iii) Find an interval around the mean y = 260mL such that 95% of all milk cartons fall within this interval. (5 marks)
9 : a=3, b=5
So b+2 = a+4 = 4a-b
b=a+2
3a=b+4
b=2a-1
Hence
2a-1=a+2
10 : original dimensions of rectangle, length = 18cm and width = 10cm
Let length and width = L and W.
from statement "A rectangle has perimeter 56 cm. If 4 cm is taken from the length and added to the width, the rectangle becomes a square", you can deduce
2L + 2W = 56 ( its sides make up its perimeter )
L - 4 = W + 4
L = W + 8
sub L = W + 8 into 2L + 2W = 56
2 ( W + 8 ) + 2W = 56
2W + 16 + 2W = 56
4W = 40
W = 10
sub W = 10 into L = W + 8
L = 10 + 8 = 18
Answer:
someone already answered it i just wanted points thanks
Which of the following is the slope of the line that is parallel to y=−12x+7?
Which postulate or theorem proves that △ABC and △EDC are congruent?
HL Congruence Theorem
AAS Congruence Theorem
SSS Congruence Postulate
SAS Congruence Postulate
Answer:
Step-by-step explanation:
SAS Congruence Postulate
HELPPPPPPPPP 7th Grade
Answer:
WHAT THE HELL IS THIS!?!?!
Step-by-step explanation:
Answer:
B (12x=180)
Step-by-step explanation:
When you combine like terms for the numbers with x's, you get 12x and the -10 and 10 cross each other out. This leaves you with 12x=180 (since a triangle always adds up to 180).
How many packs of DVD's can you buy with 154 dollars if one pack costs 14 dollars?
Answer:
11
Step-by-step explanation:
divide 154 by 14
Use the properties of isosceles triangles to find m
nora is planning a birthday party for her little sister, colleen. she needs to purchase 12 cupcakes she can not spend more than $40. write an inequality that shows how much nora can spend on each cupcake using (x)
Answer:
if she cannot spend more than $40, she will spend .3 on each cupcake
Step-by-step explanation:
when you divide 12 by 40, you get .3 and to check if it is true, you can multiply .3 x 40 and you will get 12 hope you get it right, and have a good day :)
