Answer:
250 × 0.25
Step-by-step explanation:
x/250 × 25/100
cross multiply
100x = 250 × 25
100x = 6250
divide by 100
x = 62.5
62.5 is how much the price got marked down
original price - marked down amount = new discounted price
250 - 62.5 = 187.5
$187.50 is now the actual price
As for which expression can be used to find the marked down price, none are listed in this problem and I'm assuming its a multiple choice question considering the wording of "which"
how i solved it is through cross multiplication but another way is by using the expression:
250 × 0.25
this is because 25% equals 0.25
Evaluate the expression 3x - 2(y + 3) for x = 4 and y = 7
Answer:
-8
Step-by-step explanation:
3x4= 12, 7+3=10x2=20
12-20= -8
Answer:
The value of the expression is -8
Step-by-step explanation:
Numerical value of expressions
We are given the expression:
3x - 2(y + 3)
Let's find its value for x = 4 and y = 7.
Substituting both values into the expression:
3*4 - 2(7 + 3)
Operating:
12 - 2(10)
12-20
-8
The value of the expression is -8
What is mass if force is 45 N and acceleration is 39 m/s/s?
Answer:
The answer is 1.15 kgStep-by-step explanation:
To find the mass of an object given it's acceleration and the force acting on it we use the formula
[tex]mass = \frac{force}{acceleration} \\ [/tex]
From the question
force = 45 N
acceleration = 39 m/s²
We have
[tex]force = \frac{45}{39} = \frac{15}{13} \\ = 1.153846...[/tex]
We have the final answer as
1.15 kgHope this helps you
I need help simplifying this 7(3/7−6x)
Answer:
3-42x
Step-by-step explanation:
is this true the square root of a positive number is always less than the half of the number itself
Step-by-step explanation:
yes ........................................ ..
Online, Terrell found a soup recipe that requires 1/4 of a teaspoon of pepper for every 1/2 of a teaspoon of dried basil. For a big event, Terrell wants to make a huge pot of soup. If he uses 1 teaspoon of dried basil, how much pepper should he use?
Answer:
He should use 1/2 of a teaspoon of pepper.
Step-by-step explanation:
From the question, the soup recipe requires 1/4 of a teaspoon of pepper for every 1/2 of a teaspoon of dried basil.
Now, to determine how much pepper Terrell should use if he uses 1 teaspoon of dried basil for the huge pot of soup,
Let the quantity be x
If 1/4 of a teaspoon of pepper requires 1/2 of a teaspoon of dried basil,
then, x teaspoon of pepper will require 1 teaspoon of dried basil
x = (1/4 × 1) ÷ (1/2)
x = 1/4 ÷ 1/2
x = 1/4 × 2/1
x = 2/4
x = 1/2
∴ 1/2 of a teaspoon of pepper is required for 1 teaspoon of dried basil.
Hence, he should use 1/2 of a teaspoon of pepper.
What part of an equation represents the constant rate of change?
Answer:
equation written in the form Ax + By = C where A and B are coefficients and C is the constant. assigns each input value, one output value. rate that describes how one quantity changes in relation to another quantity. rate of change between any two quantities is the same, or constant.
Step-by-step explanation:
The Slope of the equation represents the constant rate of change.
For example: in the equation [tex]y=3x+9[/tex] [tex]3[/tex] is the slope
The king gave Ron 6 gold coins.
He gave Polly 3 fewer coins than he gave Ron.
How many coins did Polly get?
Answer:
3 gold coins
Step-by-step explanation:
6 minus 3 is 3
Tina is saving to buy a notebook computer. She has two options. The first option is to put $300 away
initially and save $30 every month. The second option is to put $200 away initially and save $50 every
month. After how many months would Tina save the same amount using either option? How much
would she save with either option?
Plzzz hellpppp
Answer:
After 5 months, she will save the same amount using either option.
She would have saved $450 with either option.
Step-by-step explanation:
Set up expressions to represent the amount of money saved for each saving option, where x is the number of months
The first one can be represented by 30x + 300
The second one can be represented by 50x + 200
Set these equal to each other and solve for x:
30x + 300 = 50x + 200
300 = 20x + 200
100 = 20x
5 = x
So, after 5 months, Tina will save the same amount of money with both options.
To find how much she will save, plug in 5 as x into either expression:
30x + 300
30(5) + 300
150 + 300
= 450
So, she would have saved $450 with either option.
4) Find the Circumference of this circle.
4 cm
16. What will be the midpoint of AB with A= (-3,-8) and B = (-9,-8)
Line / passes through the origin and the point (3, 4). What is the slope
a line parallel to linel?
Answer: 4/3
Step-by-step explanation:
Slope of the line = (y2 - y1) / ( x2 - x1)
= (4 - 0) / ( 3 - 0 )
= 4 / 3
If x-y = 40 and x+y = 70, then what is the value of x squared -y squared ?
Let's see what to do buddy...
____________________________
Reminder:
[tex](a + b)(a - b) = {a}^{2} - {b}^{2} [/tex]
So we need to just Multiply above equations like this :
[tex]x + y = 70[/tex]
[tex]x - y = 40[/tex]
[tex](x + y)(x - y) = 70 \times 40[/tex]
[tex] {x}^{2} - {y}^{2} = 2800 [/tex]
____________________________
And we're done.
Thanks for watching buddy good luck.
♥️♥️♥️♥️♥️
The equation below represents a situation.
13 – 14x = 38x
Which word problem could the equation represent?
A.) A jar contains 13 dollars worth of one kind of coin. Clara took 14 coins out of the jar. Now, there are 38 coins remaining. What is the value of one of the coins in the jar?
B.) A box contains 38 muffins. Nate sells 14 muffins and makes 13 dollars. How much did Nate charge per muffin?
C.) Over 13 days, Gretchen withdrew 14 dollars from her bank account and deposited 38 dollars. On average, how much money did she deposit each day?
D.) Matthew has 38 pages to read in his textbook, but 14 of the pages are ripped out. It took him 13 minutes to read the pages. How long did he spend on each page?
Answer:
it is C
Step-by-step explanation:
Maybe
I am not really good at math
In what form is an equation that relates two proportional quantities x and y?
Oy=k+x, where k is the constant of proportionality
O y = kx, where k is the constant of proportionality
k
where k is the constant of proportionality
O y
y=
k
where y is the constant of proportionality
Answer:
B. [tex] y = kx [/tex] , where k is the constant of proportionality.
Step-by-step explanation:
Given that quantity x and y is directly proportional to each other, which means as one variable increases, the other increases as well. Thus, the constant of proportionality, which is often denotes with the alphabet k, can be represented by the following equation:
[tex] y = kx [/tex] , where, k is the constant of proportionality.
Constant of proportionality, k, is gotten when you divide the value of y by the value of x.
Jim received notice from his employer that the equation to calculate his salary was changing. Currently he makes $300 per week plus 4% commission on sales. The new equation will be $450 plus 2% commission on sales. Which equation shows the amount in sales he will need for his salary to be the same?
Answer:
Sales= $750Step-by-step explanation:
let sale be x
and his salary be y
y=300+0.4x----------1 the old equation
y=450+0.2x----------2 the new equation
for his salary to be the same
equation 1 and 2 must be equal hence
300+0.4x=450+0.2x
solving for x we have
300-450+0.4x-0.2x=0
-150+0.2x=0
0.2x=150
x=150/0.2
x=$750
Write an equation of the line passing through the point (7, 3) that is parallel to the line 4x−7y=9.
Answer:
The equation of the line is y = 4x/7 - 1
Step-by-step explanation:
The equation of a straight line can be represented by
y = mx + c
where m represents the slope and c represents the y-intercept
So for;
4x - 7y = 9
7y = 4x - 9
y = 4x/7 - 9/7
The slope here is 4/7
Since the line we are trying to form is parallel, then the slope of the line is 4/7 also, since parallel lines have equal slope
So the equation of the new line will be;
y = 4x/7 + c
To get c, just put the point x = 7 and y = 3
3 = 4/7(7) + c
3 = 4 + c
c = 3-4
c = -1
So the equation of the line is;
y = 4x/7 - 1
Which inequality is represented by this graph?
PLEASE HELP ASAP
Which expressions are equivalent to 25x4 −64? Select three options. 25x4 + 40x − 40x − 64 25x4 + 13x − 13x − 64 (5x2 + 8)(5x2 − 8) (x2 + 13)(x2 – 13) (5x2 – 8)2
The equivalent expression of 25 - 64 are "a), b) and c)"
The given expression is:
25 - 64
To find, the equivalent expressions are:
a) 25 + 40x - 40x - 64
= 25 - 64, is the equivalent expression.
b) 25 + 13x - 13x - 64
= 25 - 64, is the equivalent expression.
c) (5 + 8)(5 - 8)
Using the algebraic identity,
(a + b)(a - b) =
=
= 25 - 64, is the equivalent expression.
d) ( + 13)( - 13)
Using the algebraic identity,
(a + b)(a - b) =
=
= - 169, is not a equivalent expression.
e)
Using the algebraic identity,
, is not a equivalent expression.
∴ The equivalent expression of 25 - 64 are "a), b) and c)".
Answer: option A, B, C are equivalent to [tex]25x^4-64[/tex].
We check each option by simplifying:
A) [tex]25x^4 + 40x - 40x - 64 = 25x^4-64[/tex].
B) [tex]25x^4 + 13x - 13x - 64 = 25x^4-64[/tex]
C) [tex](5x^2 + 8)(5x^2 - 8)=(5x^2)^2-8^2=25x^4-64[/tex]
D) [tex](x^2 + 13)(x^2 - 13)=(x^2)^2-13^2=x^4-169[/tex]
E) [tex](5x^2 - 8)^2=(5x^2)^2-2(5x^2)(8)+8^2=25x^4-80x^2+64[/tex].
So option A, B, C are equivalent to [tex]25x^4-64[/tex].
Learn more: https://brainly.com/question/1214333
please help , I'm very confused on this topic
and its 40 points just help and they are yours
Answer:
RHS
Step-by-step explanation:
It is given that XY is the perpendicular bisector of WZ. This means that it forms 90-degree angles at Y. (angle XYZ and angle XYW are 90 degrees). (R)
Since there is a right angle at Y, XZ and XW are the hypotenuses. (H)
There is a common line between triangle XYZ and XYW and that is XY. (S)
Therefore you can prove ΔXYZ ≅ΔXYW because of RHS
) Jimmy's school is selling tickets to the annual dance competition. On the first day of ticket sales the school sold 13 senior citizen tickets and 7 student tickets for a total of $181. The school took in $85 on the second day by selling 1 senior citizen ticket and 7 student tickets. Find the price of a senior citizen ticket and the price of a student ticket.
First to answer gets BRAINLY!!
Answer:
the second answer
Step-by-step explanation:
Find the Slope!!Giving brainliest!!
Answer:
3/2
Step-by-step explanation:
In a shoe store window, Sandy sees a sign announcing 25% off all sandals in stock. She finds a pair she likes that was originally priced at $45. If Sandy buys this pair of sandals on sale, how much will she pay?
a)11.25 b)22.50 c)33.75 d) 56.25
can someone help me figure out how to do unit cube finding volume please?
Answer:
the Volume of a cube Given the length of one side, call it the volume of a cube can be found by using the following formula: Volume of any cube = a 3 = a × a × a Examples showing how to find the volume of a cube.
Step-by-step explanation:
The explicit rule for a sequence and one of the specific terms is given. Find the position of the given
term
f(n) -5.5n - 52;25
25 is the BLANK th term
Answer:
25 is the 14th term.
Step-by-step explanation:
The nth term of a sequence is given by the following explicit rule:
f(n) =5.5n - 52
We need to find the position n of the term of value 25. In other words, find n in the equation:
5.5n - 52=25
Adding 52:
5.5n =25+52=77
Solving:
n=77/5.5
n=14
25 is the 14th term.
If 16 of 200 apples were bad, what percent is that?
A
8%
B
10%
C
12%
D
16%
Answer:
:)
Step-by-step explanation:
It's 8 percent! Mark brainliest pls
Nathan usually drinks 32 ounces of water per day. He read that he should drink 56 ounces of water per
day. If he starts drinking 56 ounces, what is the percent increase? Round to the nearest percent.
Answer:
20
Step-by-step explanation: you have to find the amount of change then determine the percent of increase and round it to the nearest percent
32 -56=24 then round to the nearest number you get 20
A team of painters is painting all the homes in a new neighborhood. So far, they have painted
3
4
of a house in 4 days. At what rate are they painting?
Answer:
3/16
Step-by-step explanation:
1/2 divided by 6
Could you help me
Answer:
Well for some reason my computer will not allow me to see the first half, but if the question you're asking is just ''1/2 divided by 6'' then I can help!
Step-by-step explanation:
1/2 is equal to .5 so to divide .5 times 6 that would get you .083 (3 repeating).
Hope this helps, and again , my apologies for my computer not showing the first two numbers or emojis
(I just need an explanation of how to do this cause I’m not sure) find an expression for the area of these shapes
