Answer:
The system of equations 3x + 7y = 80 and 6x + 3y = 63.75 can be used to determine the cost of one CD and one DVD.
Step-by-step explanation:
Given that:
Cost of 3 CDs and 7 DVDs = $80
Cost of 6 CDs and 3 DVDs = $63.75
Let,
x be the cost of one CD
y be the cost of one DVD
According to given statement;
3x + 7y = 80
6x + 3y = 63.75
Hence,
The system of equations 3x + 7y = 80 and 6x + 3y = 63.75 can be used to determine the cost of one CD and one DVD.
How many solutions does the equation 22 = 81 have?
Why does the equation have this many solutions?
Help me plzzzz
Answer:
No solutions.
Step-by-step explanation:
22 does not equal 81, so therefore no solutions.
PLS HELP ASAP WILL GIVE YOU BRAINLEST
Tell whether each point is on the graph of f(x) = [x]. If it is, give the coordinates of another point with the same y value.
1.(-2.3, -2.3)
2. (11, 11)
3.(15, -15)
4.(0, 1)
5.(1,0)
6.(-8,8)
Answer:
Step-by-step explanation:
Can you help? I really need help
Answer:
5. find x= 32
6. find < C = 23
find c =
find a =
Sorry wish I could help more I need to learn more about this chapter in math.
Phillip wanted to leave a 15% tip. He thought to himself that 15% = 10% plus half of 10%. Which of the following equations will help Phillip estimate the tip on a $36.00 bill correctly?
A. $3.60+ $3.60 = $7.20
B. $3.60+ 1.80 =$5.40
C. $3.60+ $0.36 = $3.96
D. $1.80+ $1.80= $3.60
Answer:A
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
The sum is 2 One number is twice the other one.
Answer:
The smaller number is 0.6666... repeating, and the larger number is 1.3333... repeating.
Step-by-step explanation:
The CEO of a cell-phone company has recently noticed a 26% sales decrease in the month of July compared to June. Let n represent June’s sales. If y represents July’s sales, which equation can be used to determine the sales in July?
Answer:
y = n - 0.26n
y = 0.74n
Step-by-step explanation:
The equation that can be used to express the function above is given an Exponential Decrease function
Where:
y = a(1 - r)^t
Where
y = July sales
a = n = June sales
r = rate of decrease = 26% = 0.26
t = time in months = June to July = 1 month
t = 1
Hence, our equation =
y = n( 1 - 0.26)¹
y = n(1 - 0.26)
y = n - 0.26n
y = 0.74n
The equation that can be used to determine the sales in July is given as:
y = n - 0.26n
y = 0.74n
A dollar bill is about 0.00011 meter thick. What is this thickness in scientific notation?
Answer:
1.1×10^-4
Step-by-step explanation:
we move the point from where to in between 1.1 and counts the number of numbers it has crossed..in this case it 4...which should be -4
What is the commutative property? (Please don't copy and paste from go.ogle I need a good explanation)
Answer:
it basically means that the order in how you multiply doesnt matter. so wether u type 5 x 4 or 4 x 5 in ur calculator, you'll get the same answer either way. this works for when you want to multiply and divide, but not when you wanna subtract or divide.
Step-by-step explanation:
its basically a property that says that if you wanna swap the numbers/variables that are on one side of this specific type of equation (multiplication and addition), you can!
Answer:
yooo
Step-by-step explanation:
the communitive property is when you have the same number or same equation but just reverse it. For example, (5x+67) with the communitive property could be (67+5x). Its just the equation you are given but reversed and since they are the same numbers, you will get the same answer either way you do the problem, hope this helps you lol.
the number of employees for a certain company had been decreasing each year by 8%. If the company currently has 860 employees and this rate continues, fund the number of employees in 19 years.
Answer:
approximately 684 employees
Step-by-step explanation:
So this is an exponential equation since there is a dividing decrease, not just subtracting. The standard equation is,
[tex]y = a(b)^{x} [/tex]. [tex]a[/tex] is initial value (860 employees) and [tex]b[/tex] is the change [tex]-8%[/tex] or [tex]0.92[/tex]. The [tex]x[/tex] would be the period of time, [tex]19[/tex]. This equation would be [tex]y = 860(0.92)^{19} [/tex].
After solving, the equation would become the following: [tex]y = 860(0.92)^{19} = 176.387242442≈176[/tex]. After subracting the number of lost employees from orginal employees ([tex]860-176=684[/tex]), we see that the company will have approximately 684 employees left after 19 years.
What is the measurement of the unknown angle?
70°
2
127
146°
Answer:
Where's the picture of it?
Which expression is equivalent to 3^2x3^6? 9^12. 3^8. 3^12. 9^8
Answer:
3^8
Step-by-step explanation:
What is the answer ??
UD = ?
Answer:
UD = 20
Step-by-step explanation:
Given a tangent and a secant from an external point to the circle, then
The square of the tangent is equal to the product of the external part and the entire secant, that is
12² = 7.2(7.2 + CD)
144 = 7.2² + 7.2CD
144 = 51.84 + 7.2CD ( subtract 51.84 from both sides )
92.16 = 7.2CD ( divide both sides by CD )
12.8 = CD
Thus
UD = UC + CD = 7.2 + 12.8 = 20
Look at this angle:
What is the vertex?
A) W
B) None
C) X
D) Y
Answer:
C (x)
Step-by-step explanation:
The Vertex of an angle is the point at which the angle is located on, so in this case the vertex is X.
Can someone help with this.
Answer:
its A
Step-by-step explanation:
All four angles are not congruent, only the two opposite of each other are congruent
help please.. quickly
7z2−38z+15 Select the factors of this quadratic expression.
Answer:
(7z-3)(z-5)
Step-by-step explanation:
7z^2-38z+15
(7z-3)(z-5)
Answer:
(z - 5)(7z - 3)
Step-by-step explanation:
Given
7z² - 38z + 15
Consider the product of the factors of the coefficient of the z² term and the constant term which sum to give the coefficient of the z- term
product = 7 × 15 = 105 and sum = - 38
The factors are - 35 and - 3
Use these factors to split the z- term
7z² - 35z - 3z + 15 ( factor the first/second and third/fourth terms )
= 7z(z - 5) - 3(z - 5) ← factor out (z - 5) from each term
= (z - 5)(7z - 3) ← in factored form
Order of Operations With Integers. Please help me solve and how you got the answer!! help, please!!
Answer:
2
Step-by-step explanation:
[tex]\frac{(-2)(-3)(-4)}{-9 + (-3)}[/tex]
First, simplify the top and bottom separately:
[tex]\frac{-24}{-12}[/tex]
Then, just divide:
[tex]-24 / -12 = 2[/tex]
what is the y intercept and slope of this equation (will mark brainliest!!)
Answer: y-intercept is 3 1/3. slope is 7/9
Step-by-step explanation:
plz answer only if correct.. i tried this problem many times and i keep getting the same answer..
Answer:
39
____________________________________________
Step-by-step explanation:
Since you want to find the variable x all you have to do is simple subtraction.
The two numbers (61 and 22). Subtract those numbers and you get 39. Now it wants you to round to the jearest hundredth but there is no hundreds place so we can round to the nearest tenth. Which would be 30! Hope it helped... :)!
Bye! I did this same answer on this same problem that you posted again.
Someone help worth 5 points :( help?
Answer:
29
Step-by-step explanation:
Answer:
29
Step-by-step explanation:
Since 3x and 87 are the same length, all we need to do is 87 divided by 3.
50 points! Right answers will get brainliest! Random answers will be reported
Answer:
Hope it helps u
Step-by-step explanation:
When rotating a point 270 degrees counterclockwise about the origin our point A(x, y) becomes A'(y,-x). This means, we switch x and y and make x negative,
hence A(2,1) so after 270 degree counter clockwise rotation the A become,
A(1, -2)
Please brain-list the answer thanks.....
1 2 hopefully this helps
If £29 =500 rubles how many £ are in 1,260 give your answer to 2dp
Based on the information given, it should be noted that the value of 1260 will therefore be £73.09.
Solving equationsFrom the information given, it was stated that £29 =500. Therefore, the equation to solve that of 1260 will go thus:
£29 =500
£1 = 500/29
£1 = 17.24
Therefore, 1260 will be:
= 1260/17.24
= £73.09
Learn more about equations on:
https://brainly.com/question/13763238
The cost of 5 pounds of bananas is $3.25. What is the constant of proportionality that relates the cost in dollars, y, to the numbers of pounds of bananas, x?
Answer:
X = Cost of the bananas
Step-by-step explanation:
While y represents the weight (in pounds) of the bananas, x represents the cost of the bananas proportional to the weight.
Answer:
0.65
Step-by-step explanation:
Which of the following graphs represents the equation y- 4 =3(x-1)
A. Graph A.
B. Graph B
C. Graph
D. Graph D
please help
Answer:D
Step-by-step explanation:y-4=3(x-1)
y-4=0 3(x-1)
y=-4 , 3x-3
y=-4=3x-3
3 3
y=-4, = x=1
y-x=1+4=5
Question 2
A stereo that regularly costs $429.99 is on sale for 35% off. How much money will be discounted from the regular price? (Round to the nearest hundredth)
Your answer:
$35
$150.50
$394.99
Answer:
$150.50.
Step-by-step explanation:
The full price of the stereo is 429.99 which is 100%, the sale is 35%.
100 - 35 = 65%
100% = 429.99
1% = 429.99 ÷ 100 = 4.2999
35% =4.2999 x 35 = 150.4996
Estimated to 150.50
NEED HELP PLEASE 20 POINTS
Brian borrowed money from a credit union for 3 years and was charged simple interest at an annual rate of 9% . The total interest that he paid was $135 . How much money did he borrow?
Answer:
135/3 = 45
45/9 X 100 = 500
Brian borrowed $500
What number is the same as distance from 0 on a number line as 1 1/2
Answer: What is the distance from 0 on a number line called?
The distance between a number's place on the number line and 0 is called the number's [absolute value]. To write the absolute value of a number, use short vertical lines (|) on either side of the number.
Step-by-step explanation:
Here's a hint. I hope this helps.
Help plz all my points
9514 1404 393
Answer:
A: ∠W'Z'Y' = 60°; angles aren't changed by rotation
B: W'(-3, 6), X'(9, 6), Y'(8, 1), Z'(-4, 1)
Step-by-step explanation:
Part A:
Angle WZY is the supplement of the given angle ZWX, so is ...
∠WZY = 180° -120° = 60°
Rotation about the origin (or anywhere else) does not change angles. The new parallelogram will have ...
∠W'Z'Y' = 60°
__
Part B:
The transformation right 2 and up 3 can be described by ...
(x, y) ⇒ (x +2, y +3)
Then the translated vertices are ...
W(-5, 3) ⇒ W'(-3, 6)
X(7, 3) ⇒ X'(9, 6)
Y(6, -2) ⇒ Y'(8, 1)
Z(-6, -2) ⇒ Z'(-4, 1)
need help with ASAP!
Answer: 8y^6x^6
Step-by-step explanation:
Volume = l*w*h so multiply all the variable by multiplying the numbers and adding the exponents so
2y^2*4x^4y=8y^3x^4
then 8y^3x^4*x^2y^3=8y^6x^6
can someone help me with this
Answer:
1. 40 members
2. 4 cheerleaders
3. 40 marbles
4. 2 marbles
5. 8
6. 24
Step-by-step explanation:
1. cross multiply 12/x=30/100
2. cross multiply 12/x=10/100
3. 18/x=45/100
4. x/40=5/100
5. we know 5% is 2 marbles. multiply by 4 to get 8 marbles.
6. 20%=8 marbles. 60/20= 3. 3 x 8= 24 marbles.