a belt and a wallet cost $42.7 belts and 4 wallets cost $213.If the cost of a belt is $x and the cost of a wallet is $y, form two linear equations in x and y and solve them to find the cost of each item
Answers
hope it helps yah T-T
cost of a wallet = y
Then, system of equations would be:
x + y = 42
7x + 4y = 213
Multiply 1st equation by 4,
4x + 4y = 168
Substitute it from 2nd equation,
3x = 45
x = 15
Now, substitute it in 1st equation,
15 + y = 42
y = 42 - 15 = 27
In short, Belt costs $15 and wallet costs $27
Related Questions
add my sc tregan_fought
Answers
Trigonometry help finding the value of x
Answers
Answer:
[tex]5\sqrt{3}[/tex] or 8.66
Step-by-step explanation:
use tan:
tan = [tex]\frac{opposite}{adjacent}[/tex]
⇒ tan 60 = [tex]\frac{x}{5}[/tex]
tan of 60 is 1.73
⇒ 1.732 = [tex]\frac{x}{5}[/tex]
multiply 5 on both sides
⇒ 1.732 x 5 = [tex]\frac{x}{5}[/tex] x 5
⇒ 8.66
Answer:
[tex]\boxed {\boxed {\sf D. \ 5 \sqrt 3 \ or \ 8.66}}[/tex]
Step-by-step explanation:
Remember the 3 main trigonometric ratios:
sinθ= opposite/hypotenuse cosθ= adjacent/hypotenuse tanθ= opposite/adjacentWe are given the 60 degree angle. 5 is adjacent to the angle and x is opposite. Therefore, we must tangent.
[tex]tan \theta= \frac {opposite}{adjacent}[/tex]
[tex]tan60=\frac {x}{5}[/tex]
Since we are solving for x, we must isolate that variable. It is being divided by 5 and the inverse of division is multiplication. Multiply both sides by 5.
[tex]5(tan60)=\frac {x}{5} *5[/tex]
[tex]5(tan60)=x\\5*$$1.73205080757= x\\8.66025403784=x[/tex]
If we round to the nearest hundredth, the 0 in the thousandth place tells us to leave the 6.
[tex]8.66 \approx x[/tex]
x is about 8.66 or 5√3, which is choice D.
I need help with it
Answers
Answer:
variable, variable, known, unknown
Step-by-step explanation:
please help with explanation and show work :)
Answers
2A=bh
h=2A/b.
8. Dy-Cx=E
Dy=E+Cx
y=(E+Cx)/D
A study was conducted to investigate whether the mean price of a dozen eggs was different for two different grocery stores, Store A and Store B, in a large city. A carton of one dozen eggs from each store was randomly selected for each of 35 weeks, for a total sample size of 35 cartons from each store. The mean price of the 35 cartons was recorded for each store. The difference in the mean carton price for the stores will be calculated.
Which of the following is the appropriate test for the study?
A one-sample z -test for a population proportion
A one-sample t -test for a sample mean
A matched-pairs t -test for a mean difference
A two-sample t-test for a difference between population means
A two-sample z-test for a difference between population proportions
Answers
Answer:
A two-sample t-test for a difference between population means
Step-by-step explanation:
Answer:
D) A two-sample t -test for a difference between population means
Step-by-step explanation:
Two random samples are selected on a quantitative variable, and the difference in the sample means will be calculated. The appropriate test is the two-sample t-test for a difference in population means.
if the temperature at the North Pole is -10º F, how many degrees would the temperature have to increase for it to be 0º?
Answers
Answer:
10 degrees
Step-by-step explanation:
:) Thank you enjoy your day kind human :)
Answer:
10.
Step-by-step explanation:
-10 + 10 = 0.
works the same for degrees as well.
Da Baby has $45,000 and earns $2,500 each hour
from streams. JoJo Siwa has $62,000, earns $2,000
each hour from streams.
How
SI
Each equation represents the amount in the bank after
t hours.
Da Baby: s= 2,500t + 45,000
JoJo Siwa: s= = 2,000t + 62.000
How many hours, will it take for Da Baby and JoJo
Siwa to have the same amount in the bank?
Answers
Answer:
Step-by-step explanation:
maybe 30 vtfyubf6tyubtfcgnfgghghnvb ngvbhfhgbfvgn
M is directly proportional to R cubed a)R = 4, M = 160 find M when R = 2 b) work out the value of R when M=540
Answers
Answer:
a k (proportionality constant) = 2.5
b. r = 6
Step-by-step explanation:
Here, we want to solve a variation
m = k * r^3
160 = k * 4^3
160 = 64k
k = 160/64
k = 2.5
b) secondly;
From;
540 = 2.5 * r^3
r^3 = 216
r = cube root of 216
r = 6
please please complete it
Answers
Answer:
1. 14
2. 11
3. 19.5
4. 16
5. 76
6. 10
7. 2.5
8. 4.5
9. Mean: 10, Median: 9, Mode: 7
10. Mean: 6, Median: 7, Mode: 8,5
11. Mean: 10, Median: 11.5, Mode: 12
Step-by-step explanation:
what is the volume???
Answers
Answer:
that would be 80
Step-by-step explanation:
Here it is
Help I’ll give out brainliest pls dont answer if you don’t
Answers
Answer:
8x-8=16 is the answer after combining like terms
Answer:
x=3
Step-by-step explanation:
8x-8=16
8x=24
x=3
:)
24 is what percent of 60
Answers
Answer: 14.4
Step-by-step explanation:
60 * (24/100) = 14.4
find the solution set of 5x<36 when x ∈ n
Answers
Answer:
5x<36
5x/5 < 36/5
x < 7.2
Jean junction is selling jeans at 12% off the regular price. The regular price is $32.00 per pair. What is the discount amount
Answers
Find the smallest number such that the remainder is 3 when it is divided by 16,20 or 24.
(step required,thank you)
Answers
Answer: 123
Step-by-step explanation:
Foe us to solve this, we have to find the lowest common multiple of 16, 20 and 24 first and then add 3 to the LCM. This goes thus:
Multiples of 16 = 16, 32, 48, 64, 80, 96, 112, 128, 144, 160
Multiples of 20 = 20, 40, 60, 80, 10, 120, 140, 160
Multiples of 24 = 24, 48, 72, 96, 120
Therefore, the Lowe's common multiple is 120.
We then add the remainder of 3 and this will give:
= 120 + 3
= 123
Can you round 14.392
Answers
Answer:
The answer would be 14.0
Step-by-step explanation:
you would find what the decimal is and because it is below 14.49 you would round down
Please mark as brainllest i really need it have a nice week
[o]-[o]
\___/
Two linear functions are shown.
Which function has the greater
initial value?
Function B
y = 6x + 3
Function A
Х y
- 1 9
0 6
1 3
2 0
Function has the greater initial value because the initial value for Function A is and the initial
value for Function B is
(Type integers or decimals.)
Enter your answer in the edit fields and then click Check Answer.
All parts showing
Answers
Answer:
Function A has a greater initial value because the initial value for Function A is 6 and the initial vale for Function B is 3
Step-by-step explanation:
The data for Function A is presented here as follows;
[tex]\begin{array}{cc}x&y\\-1&9\\0&6\\1&3\\2&0\end{array}[/tex]
The slope of the function, 'm', is given using any two points as follows;
m = (9 - 3)/((-1) - 1) = -3
The slope of the function = -3
The equation of function in point and slope form is given as follows;
y - 3 = -3·(x - 1)
The equation of Function A, is therefore, given as follows;
y = 3 - 3·x + 3 = 6 - 3·x
∴ y = 6 - 3·x
The equation of Function B is given as follows;
y = 6·x + 3
The initial value of a function is given by the y-intercept of the function, where the input variable (x-variable) is zero
The initial value, (y-intercept) of Function A, f(0) is therefore found as follows;
f(x) = y = 6 - 3·x
f(0) = 6 - 3×0 = 6
The initial value of Function A, f(0) = 6
Similarly, the initial value, (y-intercept) of Function B, f(0) is found as follows;
f(x) = y = 6·x + 3
f(0) = 6×0 + 3 = 3
The initial value of the Function B, f(0) = 3
Therefore, we have that Function A has a greater initial value than Function B
Please help need the answer now!!
Answers
Answer:
The answer would be D
Step-by-step explanation:
In order for a problem to be infinite, it must be 0=0. But since this is equal, and can equal 0=0, it would be d
May someone please help me with this :)
Answers
= 13
The area = 3.7 * 2.8 = 10.36
2. Perimeter = 11.2
Area = half base times height
2.6 * 1.5 = 3.9 squared
Beginning: Identify 3 ordered pairs that are solutions to the inequality:
1st Ordered Pair
2nd Ordered Pair
3rd Ordered Pair
Submit
Answers
Answer:
what are the ordered pairs?
HELP ME PLS I REALLY NEEDD HELP!!!! MATH IS HORRIBLE
pls number them like
1.
2
3.
4.
5.
help!
lol
Answers
Answer:
Question 1
Option 2 is the correct answer
y = x - 55/ x=255
Question 2:
Last option is the correct answer
n = b + 2/ b= 5
Step-by-step explanation:
Question 1
The given information can be framed into the Mathematical form as given below:
No of cards = x
Cards given to brother = 55
Remaining cards = x - 55
Total number of cards = y
y = x - 55
Plug y = 200
200 = x - 55
20. + 55 = x
x = 255
y = x - 55/ x = 255
Question 2:
Total number of shirts bought
n = b + 2
Plug n = 7
7 = b + 2
7 - 2 = b
b = 5
n = b + 2/ b = 5
a function may assign the same output value to two different input values
Answers
Help me plsssssssssssssssssssssssssss
Answers
Answer: 37 cm^2
Step-by-step explanation:
Break the shape into two recognizable shapes. In this case a triangle and a square. To find area of a triangle use Area= 1/2 base x height. To find area of a square use Area = length x width. Then add the two together.
what is the area of circle if diameter is 6feet
Answers
Answer:
Area=πr²
=3.14×(6/2)²
=28.26 ft²
Step-by-step explanation:
Please anyone ?? Helpp
Answers
Answer:
Does this count as stander form 6.95880148018
Step-by-step explanation:
please help me, i'll mark you brainiest
20 points
Answers
Answer: 4! 300:75 Hope you have a great day! Good luck on any stressful school homework stuff you have today too!
Step-by-step explanation: A fraction consists of two numbers and a fraction bar:
300/75
The number above the bar is the numerator: 300
The number below the bar is the denominator: 75
Divide the numerator by the denominator to get fraction's value:
300/75 =
300 ÷ 75 =
4:1
find the value of x in each triangle with the given angle measures
Answers
Answer:
10 - 104
11 - 25
12 - 64
13 - 109
14 - 33
15 - 90
Step-by-step explanation:
For the first 3 triangles u must add the two angles and minus it from 180
Q number 13 do the same thing then minus the number u got by 180
Q number 14 .... 66 - 180 = 33
Q number 15 it is a right angle so it is 90
Bob made $209 for 11 hours of work.
At the same rate, how much would he make for 13 hours of work?
Answers
Answer:
He would make $247
Step-by-step explanation:
have a great day!
help pls ill mark best answer brainliest
Answers
Answer:d= 19
Step-by-step explanation:
Which equation represents a line passing through the point (8, 9) with a slope of 3?
Answers
The equation of a line passing through the point (8, 9) with a slope of 3 is y = 3x - 15.
What is the equation of a line passing through two given points in 2-dimensional plane?Suppose the given points are [tex](x_1, y_1) and (x_2, y_2),[/tex]
then the equation of the straight line joining both two points is given by
[tex](y - y_1) = \dfrac{y_2 - y_1}{x_2 - x_1} (x -x_1)[/tex]
We have been given a line passing through the point (8, 9) with a slope of 3.
then the equation of the straight line joining both two points is given by
[tex](y - y_1) = \dfrac{y_2 - y_1}{x_2 - x_1} (x -x_1)[/tex]
Its slope would be:
[tex]m = \dfrac{y_2-y_1}{x_2-x_1}[/tex]
m = 3
Therefore, the equation of the straight line
[tex](y - 9) = 3 (x -8)\\\\y - 9 = 3x - 24\\\\y = 3x -15[/tex]
Hence, the equation of a line passing through the point (8, 9) with a slope of 3 is y = 3x - 15.
Learn more about straight-line equations here:
https://brainly.com/question/380976
#SPJ2