Answer:
A bank teller has 47 $20 and $5 bills.
The value of the bills is $490.
Number of $20 bills --> x
Number of $5 bills --> y
x + y = 47 --> x = 47-y
20x + 5y = 490 --> 20x = 490-5y
so
20(47-y) = 490 -5y
940-20y = 490-5y
940-490 = -5y+20y
15y = 450
y= 30
so
x = 47-30
x = 17
IN TOTAL --> 17 $20 bills and 30 $5 bills.
Answer:
x = 17 $20 bills
y = 30 $5 bills
General Formulas and Concepts:
Order of Operations: BPEMDASMultivariable SystemsStep-by-step explanation:
Step 1: Define variables
x = # of $20 bills
y = # of $5 bills
Step 2: Set up systems of equations
[tex]\left \{ {{x+y=47} \atop {20x+5y=490}} \right.[/tex]
Step 3: Solve for x
Rewrite: [tex]\left \{ {{y=47-x} \atop {20x+5y=490}} \right.[/tex]Substitute: [tex]20x+5(47-x)=490[/tex]Distribute 5: [tex]20x+235-5x=490[/tex]Combine like terms: [tex]15x+235=490[/tex]Subtract 235 on both sides: [tex]15x=255[/tex]Divide both sides by 15: [tex]x=17[/tex]By solving for x, we now know that we have 17 $20 bills.
Step 4: Solve for y
Define: x + y = 47Substitute: 17 + y = 47Subtract 17 on both sides: y = 30Now we know that we have 30 $5 bills.
If x = 0 and y < 0, where is the point (x, y) located?
Answer:
origin.......................
Answer:on the x axis
Step-by-step explanation:
3044 in base 5 to base 10
what model represents 0.6 -0.43 of a shaded part
Answer:
0.6 - 0.43 = 0.17
which of the following coordinates planes shows the graph function y - 3 = -2 (x + 2)
Answer:
download math space that will help you more then any one can right now it's in the play store and your welcome
Step-by-step explanation:
if u take a pic of any math problem it will solve it
Convert 4B from hexadecimal to decimal.
Answer:
75
Step-by-step explanation:
You have saved $1500 to buy a TV you notice the store is offering one year same as cash deal you can take the TV home today and pay nothing until one year from now when you’re out of the store $1500 purchase price if your savings account earns 5% a year what is the NPV of this offer
Answer:
The net present value of 1,500 a year from now at 5% interest is $1,428.57.
Step-by-step explanation:
NPV = 1,500 / 1.05 = 1,428.57
using 5,7,2 to equal 6
Answer:
here my answer
Step-by-step explanation:
5+1=6
7-1=6
3x2=6
hope it helps :)
Explain why the The Communative Property of Addition is different from The Communative Property of Multiplication.
Answer: What is the commutative property of addition? To “commute” means to move around or travel. According to the commutative property of addition, changing the order of the numbers we are adding, does not change the sum. Here's an example of how the sum does NOT change, even if the order of the addends is changed and The commutative property of multiplication
states that when two numbers are being multiplied, their order can be changed without affecting the product.
Step-by-step explanation: Have a blessed day hopefully this helped!
Find the value of x in the triangle shown below.
X=?
Answer:
68
Step-by-step explanation:
Given triangle is an isoceless 56=56
So
X+56+56=180
X=180-112
X=68
So value is X is 68
Help me in part to please 100 points
Answer: So you just have to draw a trend line of an app maybe like search on google
30
40
R
P
60°
What is the measure of ZPTQ?
120
S
140°
180°
120°
100°
Answer:
140°
Step-by-step explanation:
Since we know that a circle is 360 degrees, and we are given three angles, we can subtract what we know from 360 to get ∠PTQ:
360 = 120 + 60 + 40 + ∠PTQ
360 = 220 + ∠PTQ
-220 -220
140 = ∠PTQ
∠PTQ = 140°
Join my math help server in discord to get more help in mathematics:
Friend me at: GeoGuy#0187
3. Which expression is equivalent to 8W + 12? *
O 42W + 2)
O42W + 3)
04/2w +12)
O 4(8w + 3)
Answer:
Step-by-step explanation:
8w+12 = 4(2w+3)
16x^2+25 factor completely
Answer:
You can't factor further
Hope this helps!
Find the quotient.
0.63
_____
-0.7
Answer:
- 0.9
Step-by-step explanation:
your welcome.what is quotient?a result obtained by dividing one quantity by another.
Please please help me get the anwser I just want the anwser I got a 33.3 on my last attempt and this is my last please :( I will literally give you 87 points I need help ASAP please I set it to 87 points please take Time and anwser correctly or I will report please :( I only have 11/6/2020
Answer: A
Step-by-step explanation:
Answer:
Its b
Step-by-step explanation:
Two numbers have a distance of 6 units from 0 on a number line. The numbers can be graphed on the number line as points A and B.
Drag and drop the labels to the correct positions on the number line
-10 to 10
Answer:
6
Step-by-step explanation:
The product of 9 and Jose's savings is 108. Use the variable j to represent Jose's savings. How do I translate the sentence into an equation.
Equation: 9× J= 108
Answer :J=12
A tile factory earns money by charging a flat fee for delivery and a sales price of $0.25 per tile. One customer paid a total of $3,000 for 10,000 tiles. The equation y – 3,000 = 0.25(x – 10,000) models the revenue of the tile factory, where x is the number of tiles and y is the total cost to the customer.
Which function describes the revenue of the tile factory in terms of tiles sold?
The answer is 1.C 2.$500
Expand and simply (x + 3) (x + 5)
Evaluate 10,5p + 9,71 when p = 6 and r=7
10.5() +9,7
467.9
10.50 +97([] = []+679
In the figure below, lines w and z are parallel. What is the value of x
Answer:
x° = 42°
Step-by-step explanation:
x° = 180° - (70° + 68°) = 42°
If you can answer both.. I will mark you as brainlist. Pls answer ASAP!
Answer:
15 is b because there is 4 shaded out of 8 so it would be 4/8 then you would simplify by 4 which would get you 1/2 then divide which will get 50 %
Step-by-step explanation:
i do not know what 16 is sorry
what is four-fifths of two thirds?
Answer:
The word "of" in the question means multiply, so you need to multiply these two fractions.
2/3 x 4/5 = 8/15
Step-by-step explanation:
Hope you have a great day ;-)
Answer:
8/15
Step-by-step explanation:
This is the answer because:
1) Four-fifths of two thirds basically means 4/5 x 2/3 because "of" in math usually means multiplication.
2) 4/5 x 2/3 = 4 x 2/ 5 x 3 = 8/15
Therefore, the answer is 8/15.
Hope this helps!
If f(3) = 2, find f^-1(2)
Help pls
Answer:
[tex]f^{-1}[/tex](2) is 3
Step-by-step explanation:
In the function f(x) = y, its inverse is f(y) = x
So to find the inverse of a function switch x and y
Example:
In f(1) = 2, x = 1 and y = 2
Its inverse is [tex]f^{-1}[/tex](y) = x
Then, [tex]f^{-1}[/tex](2) = 1
Let us use this rule to solve the question
∵ f(3) = 2
∴ x = 3 and y = 2
→ To find its inverse switch x and y
∵ [tex]f^{-1}[/tex](y) = x
∴ [tex]f^{-1}[/tex](2) = 3
Yen paid $10.50 for 2.5 pounds of pretzels. What price did she pay for each pound of pretzels?
The first step is to
by a power of 10, so the divisor is a whole number.
The next step is to
, by figuring out how many times 25 goes into 105.
The first step is to multiply by a power of 10, so the divisor is a whole number.
The nest step is to divide, by figuring out how many time 25 goes into 105 .
Step-by-step explanation:
i took the exam now
whats the area of a circle if the diameter 6
Answer:
28.27
Step-by-step explanation:
Answer:
18.84
Step-by-step explanation:
6x3.14 = 18.84. multiply by pi
The sum of two numbers is 38 and the difference is 8. What are the numbers?
Answer:
Since the sum is 38, y must be 15. And indeed the difference between 23 and 15 is 8, so it's correct.
Answer:
15 & 23
Step-by-step explanation:
I used an insert and check kind of method. Basically you insert numbers and check if they work for both equations. the equations are as follow:
X + Y = 38
X - Y = 8
I inserted various combinations of numbers and we'll use one as reference.
I used 16 and 22. 16 and 22 correctly fits the requirements of the first equation but when we do 22 - 16 we see that it equals 6. this is 2 off from the second equation. Using this info I ask myself, was the answer close or far from the answer needed.
Hope this answered any questions. please comment on this if you need any othern have a nice day!
If f(x) = 1.2-3.4x what is the value of f(5.1)
Answer:
−f(5.1) = 16.14
Step-by-step explanation:
Hope this helps! Stay safe!
Living with parents: 36% of the nations young adults ages 18-31
briefly explain the advantages and disadvantages of using a repeated-measures design as opposed to an independent-measures design
Answer:
The advantages as well as drawbacks of repeated measures are described below, as opposed to individual measures.
Step-by-step explanation:
A drawback though is that the respondents would be included in the analysis for some of the circumstances throughout the trial within the replicated measurement method, while different interventions should be included in the research for varying environments throughout the independent measure model.Some other benefit of using this design would be that all assessments have always had similar participants, therefore fewer sample participants have required again for research, although the independent measure needs further respondents. Comparison to just the independent calculation, the price for the replicated calculation is higher even though the same subjects are used in the analysis for different circumstances.