Answer:
Cost of the pen = Rs.100
Step-by-step explanation:
Let the marked price = x
When the shopkeeper is selling for x, his gain = Rs. 20
Cost price = Marked price - Gain = x - 20 --------(I)
After discount:
Discount = 10%
Marked price after discount = (100 - 10)% of x = 90% of x
= 0.9 * x = 0.9x
When the shopkeeper is selling for 0.9x, his gain = Rs.8
Cost price = Marked price - gain = 0.9x - 8 -------(II)
From (I) and (II)
x - 20 = 0.9x - 8
x = 0.9x - 8 + 20
x = 0.9x + 12
x - 0.9x = 12
0.1x = 12
x = 12/0.1
x = 120
Marked price of pen = Rs.120
Cost price = 120 - 20
Cost price = Rs. 100
The changing speed of a car is modeled by the function S(t) = –4t + 35, where t is time in seconds. Interpret the model.
Answer:
The car reaches a stop after 8.75 seconds have passed.
Step-by-step explanation:
Select ALL the correct answers.
Select all of the equations with a solution
Answer:
B, C
Step-by-step explanation:
Plug in the x value for each x, and solve. Make sure that the two sides are equal to one another before verifying that it is true.
|-15-7|= simply the expression
Answer:
22
Step-by-step explanation:
|-15 - 7|
-15 - 7 = -22
|-22| = 22
OMG OMG OMG PLEASE HELP!!!!!!!!!!!
Answer:
C
Step-by-step explanation:
[tex]\frac{3-\sqrt{3} }{3+\sqrt{3} } *\frac{3-\sqrt{3} }{3-\sqrt{3} } \\\\=\frac{(3-\sqrt{3})^{2} }{(3+\sqrt{3} )(3-\sqrt{3} )} \\\\=\frac{9-2*3\sqrt{3}+3 }{9-3}\\\\=\frac{12-6\sqrt{3} }{6} \\\\=2-\sqrt{3}[/tex]
I litre = ? cubic centimeter
Answer:
1000 cubic centimeter
So this will be right and also an accurate answer
Answer:
1000 cm³Step-by-step explanation:
Just multiply the volume value by 1000.
Functions stuff. Picture attached. 30 points. thanks <3
Answer:
A
Step-by-step explanation:
So we have the function:
[tex]f(x)=\frac{3+x}{x-3}[/tex]
And we want to find:
[tex]f(a+2)[/tex]
To do so, substitute in (a+2) for x:
[tex]f(a+2)=\frac{3+(a+2)}{(a+2)-3}[/tex]
Simplify the numerator and denominator. Add 2 and 3 in the numerator. Subtract in the denominator:
[tex]f(a+2)=\frac{5+a}{a-1}[/tex]
The answer is A.
Answer:
[tex]\Large \boxed{\mathrm{A}}[/tex]
Step-by-step explanation:
[tex]\displaystyle f(x) = \frac{3+x}{x-3}[/tex]
For f(a + 2), the input for the function f(x) is (a + 2).
Replacing x with (a + 2).
[tex]\displaystyle f(a+2) = \frac{3+(a+2)}{(a+2)-3}[/tex]
Simplify the rational function.
[tex]\displaystyle f(a+2) = \frac{(3+2)+a}{a+(2-3)}[/tex]
[tex]\displaystyle f(a+2) = \frac{5+a}{a-1}[/tex]
What is X I need help i dont know how to do this
Answer:
x = 75
Step-by-step explanation:
Triangle BDH
The angle must add to 180 degrees
36+ 39 + DHB = 180
75 + DHB = 180
DBH = 180-75
DHB = 105
DBH + x = 180 since it is a straight line
105+ x = 180
x = 75
PLEASE HELP!!!! offering 45 points with brainiest
Answer:
[tex]\huge\boxed{12 \ people}[/tex]
Step-by-step explanation:
By looking at the range of histogram , we come to know that:
People who walked for 0-2 hours = 5
People who walked for 2-4 hours = 17
People who walked for 4-6 hours = 12
People who walked for 6-8 hours = 9
People who walked for 8-10 hours = 3
Answer:
12 people
Step-by-step explanation:
We want to find the number of people between 4 and 6 hours
Reading the chart, the third bar is between 4 and 6 hours
12 people
Help fast please Mario completely covered a square floor using 98.5 ft² of hardwood without any overlap.
Which measurement is closest to the side length of this floor in feet?
9.5 ft
10 ft
25 ft
48ft
Answer: The answer is 10 ft. I took the test but it didn't explain why it was the answer.
20+3(7+4)+5+2(7+9)?????
Answer:
90
Step-by-step explanation:
Be sure to use PEMDAS. Begin with parentheses, the move to multiplication, then adding.
20 + 3(7 + 4) + 5 + 2(7+9)
20 + 3(11) + 5 + 2(16)
20 + 33 + 5 + 32
You can add those final four numbers in any order you want, to get a sum of 90.
Answer:
Your answer will be 90
Step-by-step explanation
First you will have to answer what's inside the parentheses
7 + 4 = 11 , 7 + 9 = 16
Then you multiply what is next to the parentheses
3×11 = 33, 2×16 = 32
Finally you will have to add
20 + 33 =53
53 + 5 =58
58 + 32 = 90
The point is doing PEMDAS
P=Parentheses
E= Exponent
M= Multiplication
D= Division
A= Addition
S= Subtraction
Anna was driving east on a freeway at a constant velocity. She was 570 kilometers west of
her exit. In 2 hours, she drove one-third of the way to her exit. What was her velocity?
Answer:
Her velocity is 95 km/hour
Step-by-step explanation:
The given information includes;
The direction to which Anna was driving = Eastward
Her initial location on the journey = 570 kilometres west of her her exit
The distance she drove in 2 hours = 1/3 of the way to her exit
Therefore, the distance she drove in 2 hours = 1/3×570 = 190 m
Her velocity = Her distance covered/(The time it take to cover the distance)
Which gives;
Her velocity = (190 km)/(2 hours) = 95 km/hour
Her velocity = 95 km/hour.
solve : 2( 3x - 1 ) = 4( x - 1 )
Answer:
x=-1
Step-by-step explanation:
6x-2=4x-4
-4x both sides
2x-2=-4
+2 both sides
2x=-2
divide by 2
x=-1
Answer:
2(3x-1)= 4(x-1)
Open bracket
6x-1= 4x-4
Group like terms
6x-4x= -4+1
2x=-3
Divide both sides by the coefficient of x
X= -3/2
Step-by-step explanation:
Help please
Arrange four 2's to produce 5
Answer:
See below
Step-by-step explanation:
Produce 5 using four 2's:
Solution 1
2*2 + 2/2 = 4 + 1 =5Solution 2
2+2 + 2/2 =4+ 1=5Solution 3
2² + 2/2 = 4 + 1 =55 students participated in a push-up competition.
The amount of push-ups each student completed is listed: 12, 7, 10, 11,5
What was the mean number of push-ups?
Answer: 9
Step-by-step explanation:
Formula : Mean = [tex]\dfrac{\text{Sum of observations}}{\text{Number of observaions}}[/tex]
Given: 5 students participated in a push-up competition.
The amount of push-ups each student completed is listed: 12, 7, 10, 11,5.
Mean = [tex]\dfrac{12+7+10+77+5}{5}[/tex]
[tex]=\dfrac{45}{5}=9[/tex]
Hence, the mean number of push-ups = 9
Solve for x.
5x - 4 = -3x+ 12
X = 2
X=6
X=-4
Answer:
x = 2
Step-by-step explanation:
Given
5x - 4 = - 3x + 12 ( add 3x to both sides )
8x - 4 = 12 ( add 4 to both sides )
8x = 16 ( divide both sides by 8 )
x = 2
A computer is programmed to combine 60,000 points of data in such a way that with each iteration, there are half as many data points as before. The number of data points after any number of iterations, x, can be modeled with the following function. [tex]f(x)= 60,000(1/2)^x[/tex]
Which statement compares the mathematical range and reasonable range of the function?
A. Both the mathematical and reasonable ranges are limited to real numbers greater than 0 and less than or equal to 262,144.
B. Both the mathematical and reasonable ranges are limited to whole numbers greater than 0 and less than or equal to 262,144.
C. The mathematical range is all real numbers greater than 0. The reasonable range is all real numbers greater than 0 and less than or equal to 262,144.
D. The mathematical range is all real numbers greater than 0. The reasonable range is all whole numbers greater than 0 and less than or equal to 262,144.
Answer:
D.) The mathematical range is all real numbers greater than 0. The reasonable range is all whole numbers greater than 0 and less than others equal to 60,000.
Step-by-step explanation:
The statement that compares the mathematical range and reasonable range of the function is the mathematical range is all real numbers greater than 0. The reasonable range is all whole numbers greater than 0 and less than or equal to 262,144. The correct option is D.
What is a computer program?A computer program is a set of instructions written in a programming language that a computer can execute. The software contains computer programs as well as documentation and other intangible components.
A program, or software program, is a set of instructions that guides the hardware of a computer to complete a task.
Therefore, the correct option is D, The mathematical range is all real numbers greater than 0. The reasonable range is all whole numbers greater than 0 and less than or equal to 262,144.
To learn more about computer programs, refer to the link:
https://brainly.com/question/14618533
#SPJ2
math ... answer meeee
You need to find the GCF (greatest common factor) of 45 and 90, which is 45.
45 times ? gets you 45
? would be 1
45 times 1 equals 45.
45 times ? gets you 90
? would be 2
45 times 2 equals 90
45(1+2) = 45+90 = 135
♡ Hope this helps! ♡
❀ 0ranges ❀
Answer:
45(1 + 2)
Step-by-step explanation:
To find the greatest common factor, we find the multiples of 45 and 90.
45: 1, 3, 5, 9, 15, 45
90: 1, 2, 3, 5, 6, 9, 15, 18, 45...
The easier way to do this is divide 90 by 2 to get our GCF, 45.
We place the 45 (GCF) in the first box and we place 1 and 2 in the parentheses because when you distribute, we get our original answer.
45(1 + 2)
x/8-1/2=6
what does that make?
Answer:
x = 10Step-by-step explanation:
[tex]\frac x8-\frac12\ =\ 6\\\\{}\ \ \cdot8\qquad \cdot8\\\\x-4\ =\ 6\\\\{}\ +4\ \,\quad+4\\\\x\ =\ 10[/tex]
Write down the value of the digit 5 in 75389 write your answer in words.
Answer:
It's very easy mate!
Step-by-step explanation:
Ninty eight thousand seven hundred fifty three
that is 98753 in no.s
●✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎❀✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎●
Hi my lil bunny!
❧⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯☙
[tex]\boxed{98753 }[/tex]
In word form = Ninety eight thousand seven hundred fifty three
In Number form.= 98753
❧⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯☙
●✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎❀✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎●
Have a great day/night!
❀*May*❀
Solve n/3 = 16
Please help :)
Step-by-step explanation:
To solve for n, we need to isolate the variable n.
Multiply both sides of the equation by 3 to cancel out the 3 on the left side, and multiply 3 by 16 to get our final answer.
[tex]\frac{n}{3}*3=n\\16*3=48[/tex]
Our final answer: n = 48
3. Construct Arguments which is a better
approximation of V20, 4.5 or 4.47?
Explain.
Answer:
Step-by-step explanation:
Using the identity (x + 0.5)^2 = x(x + 1) + 0.25:
4.5^2 = 4 * 5 + 0.25 = 20.25
Also 4.45^2 = 19.8
so 4.47^2 will be closer to 20 than 4.5^2.
What is the answer?
Evaluate the function.
[tex]f(x) = - x^{2} - 7x - 5[/tex]
Find
[tex]f( - 5)[/tex]
===================================================
Explanation:
Everywhere you see an x, replace it with -5. Then use the order of operations PEMDAS to simplify
[tex]f(x) = -x^2 - 7x - 5\\\\f(-5) = -(-5)^2 - 7(-5) - 5\\\\f(-5) = -(25) - 7(-5) - 5\\\\f(-5) = -25 + 35 - 5\\\\f(-5) = 10 - 5\\\\f(-5) = 5\\\\[/tex]
Keep in mind that for the x^2 term, you are squaring all of x = -5, which includes the negative as well. So that means
x^2 = (-5)^2 = (-5)*(-5) = 25
but sticking a negative out front makes
-x^2 = -(-5)^2 = -25
18 divided by 3-7+2x5
Please help!!!
Equivalent expressions are expressions that have the same values.
The result of [tex]\frac{18}{3} - 7 + 2 \times 5[/tex] is 9
The expression is represented as:
[tex]\frac{18}{3} - 7 + 2 \times 5[/tex]
Using BODMAS, we start by dividing 18 by 3
[tex]\frac{18}{3} - 7 + 2 \times 5 = 6 - 7 + 2 \times 5[/tex]
Evaluate the products of 2 and 5
[tex]\frac{18}{3} - 7 + 2 \times 5 = 6 - 7 + 10[/tex]
Evaluate the sum of -7 and 10
[tex]\frac{18}{3} - 7 + 2 \times 5 = 6 + 3[/tex]
Evaluate the sum of 6 and 3
[tex]\frac{18}{3} - 7 + 2 \times 5 = 9[/tex]
Hence, the result of [tex]\frac{18}{3} - 7 + 2 \times 5[/tex] is 9
Read more about equivalent expressions at:
https://brainly.com/question/2972832
Can you help me I am stuck on it
Answer:
-7 is less than or equal to 0
Step-by-step explanation:
range is looking at the correlation on the graph from left to right. At -7, there is a dot and at 0, there is a dot. The graph is not continuous, so that is the answer.
Please help! I need details for all the transformation(s). (Translation, reflection, rotation.)
Answer:
ABC is reflected over the line x=1, then translated up 6 units.
The lengths of the sides of the triangles are congruent, so the triangles are congruent.
Step-by-step explanation:
ABC is reflected over the line x=1, then translated up 6 units.
The lengths of the sides of the triangles are congruent, so the triangles are congruent.
Write the equation in standard form for the circle that has a diameter with endpoints (22,0) and (2,0)
Answer:
(x - 12)² + y² = 100
Step-by-step explanation:
The standard form of the equation of a circle is;
(x - a)² + (y - b)² = r²
where:
a and b are the coordinates of the centre of the circle
r is the radius
We are given the coordinates of the endpoints of the diameter as; (22,0) and (2,0)
Thus, the centre of the circle would be at the mid point of the endpoints of the diameter.
Coordinates of the centre is;
((22 + 2)/2), (0 +0)/2))
This is;
(12, 0)
So, a = 12 and b = 0
Now,to get the radius r, we will use the formula;
r = √[(x2 - x1)² + (y2 - y1)²]
Where;
(x1, y1) and (x2, y2) are 2 points namely (12,0) and (22, 0)
r = √[(12 - 22)² + (0 - 0)²]
r = √(-10)²
r = √100
r = 10
Thus,equation of the circle is;
(x - 12)² + (y - 0)² = 10²
(x - 12)² + y² = 100
can someone help me out
Answer:
its an INTEGER , a RATIONAL NUMBER and a REAL NUMBER
all are correct
hope it helps (✷‿✷)
During a rain shower, Jeanette collects 42 1/2 gallons of water in a rain barrel outside her home. She uses 1 1/4 gallons to water plants inside her house. Then, she uses 1/2 of the remaining water to wash a load of dirty laundry. How many gallons of water does Jeanette use to wash her laundry?
Answer: 20 5/8
Step-by-step explanation:
We did this problem in class and that’s the answer we got
Answer:20 5/8
Step-by-step explanation:
i think this is correct
If you're good at math i'd love some help :)
Answer:
x = 10 x = -2
Step-by-step explanation:
(x-4)^2 -28 = 8
This is a parabola on the left and a constant line on the right. The parabola will cross the line twice, so there will be two solutions
see attached
Add 28 to each side
(x-4)^2 -28+28 = 8+28
(x-4)^2 = 36
Take the square root of each side
sqrt((x-4)^2) = ±sqrt(36)
x-4 = = ±6
Add 4 to each side
x-4+4 = 4±6
x = 4+6 x = 4-6
x = 10 x = -2
Answer:
x = 10, and x = - 2
Step-by-step explanation:
This equation has two solutions, as it resembles a quadratic equation. When graphed it will be a parabola, and hence intersects the x - intercept at two points, giving us two solutions.
Let's start by expanding the equation,
(x - 4)² - 28 = 8,
(x - 4)² = 28 + 8,
(x - 4)² = 36,
x - 4 = √36, and x - 4 = - √36
x - 4 = 6, and x - 4 = - 6
Solution(s) : x = 10, and x = - 2