Answer:
20%
Step-by-step explanation:
Discount = (new price - initial price) / initial price
= (20 - 25) / 25 = -5 = -0.2 = -20%
HELP HELP I NEED HELP ASAP PLEASE!!
Find an integer a such that a < √77 < a + 1
PLEASE RIGHT AND EXPLANATION TOO
PLS PLS NO CAP
Answer:
try 87 or 86
Step-by-step explanation:
For 15 points.Explain, in your own words, the steps necessary to solve a system of equations
using the substitution method.
First, what is an equation?
➳ A mathematical statement which shows that two algebraic expressions are equal is called and equation.
Or, LHS = RHS
Example:- 3x - 5 = x + 8
An equation is said to be a linear equation if it contains only one variable (literal) with highest power 1.
_______________________
Solving an equation:-
To solve the equation x + 5 = 7 means to find the value of an unknown algebraic quantity used in the equation.
Example:-
To solve the equation x + 5 = 7 means to find the value of x.To solve the equation 3y + 2 = 9 means to find the value of y.To solve the equation [tex]\sf \dfrac{2a}{3} + 4 = 10[/tex] means to find the value of a ⠀⠀⠀⠀⠀⠀and so on!⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
★ Rules for solving an equation by the substitution method:-
Rule ❶
If x = 2, the value of the expression 3x + 2 = 3 × 2 + 2 = 6 + 2 = 8
Rule ❷
If x = 0, the value of the expression 3x + 2 = 3 × 0 + 2 = 0 + 2 = 2
Rule ❸
If x = -2, the value of the expression 3x + 2 = 3 × -2 + 2 = -6 + 2 = -4
Now consider the algebraic expression 5x - 2y
This expression consists of variables x and y.
Now if :-
x = 3 and y = 2, 5x - 2y = 5 × 3 2 × 2 = 15 - 4 = 11x = 8 and y = 5, 5x - 2y = 5 × 8 - 2 × 5 = 40 - 10 = 30⠀⠀⠀⠀⠀⠀⠀⠀
The process of finding the value of an algebraic expression by substituting the given value of its variable is called substitution.⠀⠀
(WILL GIVE BRAINLIEST)
An oblique cylinder has a radius of 16 meters and a volume of 5,120(pi) cubic meters. Use Cavalieri’s Principle to solve for the height of the solid.
20 meters
25 meters
50 meters
250 meters
Answer: 20 meters
Step-by-step explanation:
We are told that an oblique cylinder has a radius of 16 meters and a volume of 5,120 pi cubic meters. We will use volume of oblique cylinder to find the height of our given cylinder. volume of a oblique cylinder= πr²hUpon substituting our given values in above formula we will get,5,120π m³ = π ( 16 m² × h )
5,120π m³ = π × 256 m² × h
Let us divide both sides of our equation by 100 pi.Therefore, height of our given oblique cylinder is 20 meters.
sorry if its wrong!!!
how do you factor 20x^5+54x^4+10x^3
Answer:
2x^3(5x + 1) (2x + 5)
Step-by-step explanation:
I used a website called math.way, u should try it too!
Help me please before it's to late
Answer: G, E, C,B
Step-by-step explanation:
Aiden earned $50 in interest in six
months. If his savings account has a
rate of 5%, how much did Aiden
start with in his account?
9514 1404 393
Answer:
$2000
Step-by-step explanation:
The amount of interest is given by the formula ...
I = Prt
where P is the principal invested, r is the annual rate, and t is the number of years. Here, we want to find P when I = 50, r = 0.05, and t = 1/2.
50 = P(0.05)(1/2)
P = 50/(0.05·1/2) = 2000
Alden started with $2000 in his account.
If you randomly select a card from a well-shuffled standard deck of 52 cards, determine the probability that the card you
select is a 6.
a) Write your answer as a reduced fraction.
b) Write your answer as a decimal, rounded to the nearest thousandth.
c) Write your answer as a percent. Round to the nearest tenth of a percent as needed.
Answer:
a. 1/13
b. 0.077
c. 7.7
Step-by-step explanation:
a. there are 4 of the 6 in a deck of cards so the probability of taking this cards from the deck of 52 cards is 4/52. Given you 1/13.
Probability is the chance of an event to occur from a total number of outcomes.
The answer in the reduced fraction is 1/13
The answer in decimal is 0.077
The answer as a percentage is 7.7 %
What is probability?It is the chance of an event to occur from a total number of outcomes.
The formula for probability is given as:
Probability = Number of required events / Total number of outcomes.
We have,
Number of cards = 52
The number of cards randomly selected = 1
The number of cards that is 6 in a deck of 52 cards:
= 4
i.e
6 of spade
6 of diamond
6 of hearts
6 of club
Now,
The probability that a randomly selected card from a deck of
52 cards is 6:
= Number of cards that is 6 / Total number of cards
= 4 /52
The answer in the reduced fraction of 4/52 is 1/13
The answer in decimal:
= 4/52
= 0.0769
Rounding to its nearest thousandth.
= 0.077
The answer as a percent:
= 4/52 x 100
= 0.0769 x 100
= 7.69 %
Rounding to the nearest tenth.
= 7.7 %
Thus,
The answer in the reduced fraction is 1/13
The answer in decimal is 0.077
The answer as a percentage is 7.7 %
Learn more about probability here:
https://brainly.com/question/14099682
#SPJ2
12. What is the measure of the missing side? Round your answer to the
nearest tenth. *
Answer:20.5
Step-by-step explanation:if you measure it with grid paper and round it its 20.5
Dessa, Anne, and Dy bought materials for their project worth
₱276.45. The girls divided the amount equally among themselves.
How much is each share?
Answer:
Step-by-step explanation:
=276.45/3
=92.15
each share is for 92.15
When I have the problem (x−2)^2, why is the answer not x^2−4 or x^2+4?
Answer:
We need to square a binomial.
The following rule is applied:
In our example,
is equal to ,
is equal to and
is equal to .
Step-by-step explanation:
Which word does not belong in the group of words
Belize, Kingston, Bridgetown, London
Answer:
belize
Step-by-step explanation:
Answer:
Belize
Step-by-step explanation:
i dont know if its right tell me if im wrong
Please help with my work!
Answer:
Both 2 and 4 is 139
Step-by-step explanation:
Hope this helps
Please help and can you sow work.
Solve the proportion for e
Please helpp meee
Show work if can thank you
Answer:
17
Step-by-step explanation:
Cross multiply: 51 × 6 = 306Divide: 306 ÷ 18 = 17So, e = 17I hope this helps!
PLSS HELP!!!!!! like this is part of my grade
Answer:
387 is rounded to 400
Step-by-step explanation:
Answer:
400
Step-by-step explanation:
0-49 = round down
50-99 = round up
Since 718 is between 0-49, we would round to 700
Since 331 is between 0-49, we would round to 300
700 - 300 = 400
Which pair of points on a coordinate plane are separated by a distance of 5 units?
Answer:
(0,0) and (5,0)
Step-by-step explanation:
i dont know your choices
helloo!! could yall please help me!
Number 1 is B
Number 2 is D
What is the measure of angle WVX? Please answer ASAP
Answer:The sum of the measures of WVX and YVZ = 180°- 90° = 90°. Since WVX and YVZ measure 4a and 2a respectively, 6a = 90° so a = 15°.
Step-by-step explanation:Dont question me :) just lmk if it was right or wrong
Callie posted a cute cat video on a popular website. On the first day after she posted the video, the video had 5 views. On the second day, it had 15 views. On the third day, it had 45 views, and on the fourth day, it had 135 views.
A. How many views would you expect the video to have after 5 days? Explain how you found your answer.
B. Which type of reasoning did you use to solve this problem, deductive or inductive? (2 points)
Answer:
(A) 5th day: 405 views
(B) inductive
Step-by-step explanation:
Each day the views get multiplied by 3.
Answer:
A. I would expect the video to have 405 views after day 5. There is a pattern of the number being multiplied by 3.
B. Deductive reasoning
Step-by-step explanation:
(This is really going to explain BOTH questions at the same time)
Looking that the problem, the number of views keep going up. There is a multiplier behind this, we just don't know WHAT multiplier it would be. To find that out, divide 1 value by the one before it. I'll do 135 divided by 45 as an example. That would equal three. Now we know the multiplier is 3. So, now we need to multiply 135 by 3 to get 405 views after five days.
(This is really summarizing B, whilst answering A.)
Find f(-5)
f(x) = -4x + 3
A) -17
B) -7
C) 12
D) 23
Answer:
B
Step-by-step explanation:
=tyhgff GJ jhvcvvbvcccvjuuuu hgfdvghg jhvgfgg bbvcfff bbvcfff bbvcfff hbbjggg hhfccgyhb 5th and 3rd of November in a rectangle has been released in December 5th of July in a square of the area and I am very interested to the area and I look for the position and am looking forward for the position of your firm in my work to be a great fit and would love ms your help and if I could help with any other things
At which values of θ is the function y=sec θ undefined?
-all multiples of π
-odd multiples of π
-all multiples of π/2
-odd multiples of π/2
Answer:
odd multiples of [tex]\frac{\pi }{2}[/tex]
Pencils cost $0.20 each.
A. Write a function rule to calculate the total cost of any number of pencils.
B. Use your rule to find the total cost of 12 pencils.
35 points please answer pls pls pls
28. A population of a city is 422,000 and increases by 12% each year. Use an exponential function to find the population of the city after 8 years,
29. A car bought for $13,000 depreciates at 15% per year. Use an exponential function to find the value of the car after 5 years.
30. Scott purchased a painting in 2006 for $1,250. Since then, its value has increased by 6% each year. Use an exponential function find the value of the painting in 2017.
Step-by-step explanation:
28. a=422000 (1+12%)^8
=1044856.46
29 a=13000 (1+15%)^-5
=6463.29
30 a=1250 (1+8%)^11
=2914.548
using compound interest formula
The area of a square is 81 cm 2 . Find the perimeter of the square.
PLEASE ANSWER!!!
Answer:
36
Step-by-step explanation:
9 times 4 buddy
Name the polynomial below.
x2 + 3x – 11
Answer:
a second power trinomial
Step-by-step explanation:
solve systems of equations by algebraically x-2y=7
2x+5y =5
Answer:
(5,-1) or x=5 y=-1
Step-by-step explanation:
I used the substitution method to solve this!
1. Pick one of your equations and solve for one of the variables. I chose the first equation and solved for x.
x-2y=7
(Move the -2y to the other side of the equation in order to get the x by itself. You do the opposite, so it becomes +2y.)
x=2y+7
2. Now take your second equation and plug in what you got for x into the x variable.
2(2y+7)+5y=5
(Multiple 2 by everything inside of the parentheses.)
4y+14+5y=5
(We want to get the y by itself, so move the 14 to the other side.)
4y+5y=-14+5
(Combine all the like terms.)
9y=-9
(Divide the 9 from the y. What you do to one side you must do to the other.)
y=-1
3. Since you have one variable solved for. Now take the first equation and plug in your y.
x-2(-1)=7
(Multiple -2 by -1)
x+2=7
(Move the 2 to the other side in order to get the x by itself.)
x=5
4. If needed, plug in your x and y values into the equations in order to check your answer.
Hope this could help!
“Each set below has 3 expressions. There is ONE expression in EACH set that DOES NOT BELONG. Try to find the expression that does not belong in EACH SET and EXPLAIN WHY!” -please help im behind because I was online schooled at a bad school so now I’m at a different school and my tutor is sick.
Set 1: 3(x + 2) // 3x +6 // 3(2x)
Set 2: 1/2 (-4x) // 1/2 (2x - 6) // x - 3
Set 3: 24x + 8y // 2 (12x + 4y) // 8(3x + y)
Answer:
Set 1: 3(2x)
Set 2: 1/2 (-4x)
Set 3: 2 (12x + 4y)
Step-by-step explanation:
Set 1: 3(x+2) and 3x+6 are the same//3(x+2) =3x+6
Set 2: 1/2 (2x - 6) and x - 3 are the same//1/2 (2x - 6) = x-3
Set 3: 24x + 8y and 8(3x + y) are the same//2x+8y = 8(3x + y)
8 1/2 divided 2 2/3 as a mixed number?
Answer:
= 3 3 16Step-by-step explanation:
17 ÷ 8 2 3Second step : multiply
= 17 × 3 2 × 8The answer will be 51
16
= 51 16Simplifying 51/16 , the answer is
= 3 3 16l hope it helps ❤❤
Mixed number is the combination of the whole number and the fraction number. The whole and the part of the whole combined can be expressed as a mixed numbers. the result of the division of the two mixed number is [tex]3\dfrac{3}{16}[/tex].
Given information;
The mixed numbers given is the problem are [tex]8\dfrac{1}{3} [/tex] and [tex]2\dfrac{2}{3} [/tex]
Mixed numberMixed number is the combination of the whole number and the fraction number. The whole and the part of the whole combined can be expressed as a mixed numbers.
Now the given mixed number has to be divided. This number can be divided by converting into the proper fraction numbers. Let I is the result when the two numbers are divided. Thus,
[tex]x=8\dfrac{1}{2} \div 2\dfrac{2}{3} \\ [/tex]
To solve this convert the mixed numbers into the fraction number. For this multiply the denominator to the whole number and then add in the numerator. Thus,
[tex]x=\dfrac{16+1}{2} \div \dfrac{6+2}{3} \\ x=\dfrac{17}{2} \div \dfrac{8}{3} \\ [/tex]
Convert the divide sign into the multiply sign by changing the numerator to the denominator of one of the fraction.
[tex]x=\dfrac{17}{2}\times \dfrac{3}{8} \\ x=\dfrac{51}{16}\\[/tex]
As 16 can divide the number 51 in 3 times with reminder 3. Thus the mixed number for the above fraction can be written as,
[tex]x=3\dfrac{3}{16}[/tex]
Thus the result of the division of the two mixed number is [tex]3\dfrac{3}{16}[/tex].
Learn more about the mixed number here;
https://brainly.com/question/2639375
Wesley has a baseball sticker with a radius of 2.3 centimeters. Determine the circumference of his baseball sticker to the nearest tenth of a centimeter.
Answer:
14.4 centimeters
Step-by-step explanation:
The formula for circumference is: [tex]2\pi r[/tex]. In this case, the r (radius) is 2.3. Multiply it by 2 to get the diameter or 4.6. Then multiply 4.6 x [tex]\pi[/tex] (pi) to get 14.444. This rounded to the nearest tenth of a centimeter is 14.4.
Note:
I used 3.14 for [tex]\pi[/tex] (pi).
Hope it helps!
PLEASE HELP THIS IS DUE IN 5 MINUTES!!!!
Answer:
Its D :) always do parenthesis first!
Step-by-step explanation: