Answer:
(6,-1)
Step-by-step explanation:
Hi there!
We are given the following system:
x-2y=8
8x+6y=42
And we want to solve it by substitution
Substitution is where we solve one of the equations in the system for a variable for an expression containing the other variable, then substitute that expression into the other equation, then solve the equation for that variable, then use the value of the solved variable to find the value of the first variable.
It's easier to solve a system for a variable if the leading coefficient in front of a variable is 1, like with x in x-2y=8
So let's solve the equation for x.
add 2y to both sides
x-2y=8
+2y +2y
________________
x=2y+8
Now substitute 2y+8 as x in 8x+6y=42
8(2y+8)+6y=42
Multiply
16y+64+6y=42
Subtract 64 from both sides
16y+6y=-22
Add 16y and 6y together
22y=-22
Divide both sides by 22
y=-1
Substitute -1 as y into x=2y+8 to solve for x
x=2(-1)+8
Multiply
x=-2+8
x=6
The answer is x=6, y=-1, or as a point, (6, -1)
Hope this helps!
See more on solving systems of equations by substitution here: https://brainly.com/question/26559381
A camera has a listed price of $801.99 before tax. If the sales tax rate is 8.5%, find the total cost of the camera with sales tax included.
Round your answer to the nearest cent, as necessary.
Answer:
$870.16 dollars
Step-by-step explanation:
Given the following question:
Original cost = $801.99
Sales tax of 8.5%
In order to find the answer, we find 8.5% of the original cost of the camera. After that, we simply add that number to the original cost of the camera to find our answer.
[tex]\frac{8.5\times801.99}{100} =8.5\times801.99=6816.915\div100=68.16915[/tex]
[tex]68.16915[/tex]
[tex]9>5[/tex]
[tex]68.17[/tex]
Sales tax is $68.17
[tex]801.99+68.17=870.16[/tex]
Total price for the camera including tax is "$870.16."
Hope this helps.
1.38 × 14 long multiplication
The vertices of AXYZ are X(1, –4), Y(-2, -1), and Z(3, 1). For the
translation T-4.-3) (AXYZ), give the vertices of AX'Y'Z'.
()
Answer:
X'₍₋₃ , ₋₇), Y'₍₋₆ , ₋₄), Z'₍₋₁ , ₋₂₎
Step-by-step explanation:
X₍₁ , ₋₄₎ translation T₍₋₄ , ₋₃₎ => X'₍₁₊ ₋₄ , ₋₄₊ ₋₃₎ => X'₍₋₃ , ₋₇)
Y₍₋₂ , ₋₁₎ translation T₍₋₄ , ₋₃₎ => Y'₍₋₂ ₊ ₋₄ , ₋₁₊ ₋₃₎ => Y'₍₋₆ , ₋₄)
Z₍₃ , ₁₎ translation T₍₋₄ , ₋₃₎ => Z'₍₃₊ ₋₄ , ₁₊ ₋₃₎ => Z'₍₋₁ , ₋₂)
Please help! It's homework! Question 8.
Answer:
2467 = 200 (1.67) 2000
Step-by-step explanation:
diver theat ovlqmePlease help me I would most definitely appreciate it!
solve the linear system using elimination
4x - 3y = 8
5x - 2y = -11
Answer:X=-7 and y=-12
Step-by-step explanation:
The solution is in the file below
If you know the circumference of a circle how do you find diameter?
Answer:
circumference of a circle = [tex]\pi[/tex]d
Step-by-step explanation:
circumference of a circle = 2[tex]\pi[/tex]r
where r = radius
diameter of a circle d = 2r
where r = radius
Therefore, circumference of a circle = [tex]\pi[/tex]d
What’s a number between 10 and 11?
I NEED HELP. DON’T TROLL
Answer:
You start with the decimals place since you can't go any further than another whole number.
10.1, 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9 and so on, in the tenths hundredths and thousandths place.
There can be only rational numbers or decimals
For example
10.210.710.310.23310.8921. In 2019, the population in Modesto is 212,616. The annual growth rate of Modesto is 2%. Write an
exponential model to represent the population of Modesto. Then use this model to estimate the population after 8 years.
Answer:
A general formula for calculating the population growth rate is Gr = N / t. Gr is the growth rate measured in individuals, N is the change in population, and t is the period of time.
Step-by-step explanation:
SM
solve system of equations:
4x + 3y = 10
3x + y = 15
Answer:
x= 7 y= -6
Step-by-step explanation:
brainliest plzzz
how do you calculate the LCM for 128 and 256
Answer:
I think its 256
Step-by-step explanation:
The LCM of 128 and 256 is 256. Steps to find LCM. Find the prime factorization of 128 128 = 2 × 2 × 2 × 2 × 2 × 2 × 2; Find the prime factorization of 256.
Answer:
256
Step-by-step explanation:
1- Find the prime factorization of 128
128 = 2 × 2 × 2 × 2 × 2 × 2 × 2
2- Find the prime factorization of 256
256 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2
3- Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:
LCM = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2
4- LCM = 256
¿Alguien sabe como se llaman estas figuras en inglés?
Answer:
7. parallelogram
8. square
9. trapezoid (trapezium) (maybe "acute" - can't see the whole image)
10. rhombus
11. ?
12. rectangle
13. equilateral triangle
14. scalene triangle
15, 16, 17 and 18 are all isosceles triangles as they have 2 sides of equal length
peter comapred 2 pencils. The figure below shows the two lengths
3\4 an 5\6
what is the difference in the lengths of the 2 pencils.
A car salesperson had $79,327 in total monthly sales in June and $88,798 in July. The salesperson earned $3,890 in commission from those combined sales.
What is the salesperson's commission as a percent of total sales for the two months?
Enter your answer, rounded to the nearest tenth of a percent, in the box.
%
Answer:
its 2.3%
Step-by-step explanation:
i did the test
Answer:
2.3%
Step-by-step explanation:
I took the test and forgot to submit my answer lol
Convert to inches.
Help please
Answer:
306
Step-by-step explanation:
8.5 × 36 = 306
Darius and Barb are playing a video game in which the higher score wins the game. Their scores are shown below.
Darius’s scores: 96, 54, 120, 87, 123
Barb’s scores: 92, 98, 96, 94, 110
Barb says that she is the winner. Darius says that it is a tie. Who is correct?
- Barb is correct if both the mean and median scores are considered.
- Barb is correct if only the median score is considered.
- Darius is correct if both the mean and median scores are considered.
- Darius is correct if only the median score is considered.
Answer:
D. Darius is correct if only the median score is considered.
Step-by-step explanation:
Answer:
The correct answer is option D: Darius is correct if only the median score is considered.
Step-by-step explanation:
I did the test and got it correct
Hope this helps! Have a nice day!
2. Given g(x) =1/2x+5, find the following.
a. g(4)
b. g(-10)
C. g(0)
Can someone please help me?
Answer:
Look below
Step-by-step explanation:
To do this, we have to substitute each number for x...
a. [tex]g(4)=\frac{1}{2}(4)+5=\frac{4}{2}+5=2+5=7[/tex]
b. [tex]g(-10)=\frac{1}{2}(-10)+5=\frac{-10}{2}+5=-5+5=0[/tex]
c. [tex]g(0)=\frac{1}{2}(0)+5=0+5=5[/tex]
help me find the answer!! 2-step equation
[tex] \looparrowright \sf3\leqslant \dfrac{y}{ - 5} + 7[/tex]
[tex] \looparrowright \sf3 - 7\leqslant \dfrac{y}{ - 5} [/tex]
[tex] \looparrowright \sf - 4\leqslant \dfrac{y}{ - 5} [/tex]
[tex] \looparrowright \sf - 4 \times - 5\leqslant {y}[/tex]
[tex] \looparrowright \sf 20\leqslant {y}[/tex]
9+16x=17x+4 solve for x
[tex]9 + 16x = 17x + 4 \\ 9 - 4 = 17x - 16x \\ 5 = x[/tex]
hope this helps!
~god bless you~
~diva~
In 1990, a donut shop sold 500 donuts per day. In 2000, they sold 700 donuts per day. Assuming a linear relationship, how many donuts did they sell per day in 2015?
Answer:
1,000
Step-by-step explanation:
In 1990, 500 donuts were sold per day. In the year 2000 the number of donuts sold went up by 200 to reach 700 donuts per day. Since we are to assume it's a linear relationship, it would mean that every ten years the number of donuts sold would go up by 200/day. In 2010 the shop would be selling 900 donuts per day. So, in 2015, The shop would be selling 1,000 donuts per day since only 5 years had passed since 2010 and after 5 years it would only go up by 100/day.
ASAP PLSSS ALL MY POINTS Use sigma notation to represent the sum of the first seven terms of the following sequence: 4, 10, 16, …
the summation from n equals 1 to 7 of negative 4 plus 6 times n
the summation from n equals 1 to 7 of 4 plus 6 times n
the summation from n equals 1 to 7 of 2 plus 6 times n
the summation from n equals 1 to 7 of negative 2 plus 6 times n
Answer:
Step-by-step explanation:
Answer:
i really need help on this one too
Step-by-step explanation:
.
Need this tonight, no joking around, circled B as a placeholder, tell me the right one
What is the equation of the line that passes through the point (3,−3) and has a slope of 0?
Answer:
x = 3
Step-by-step explanation:
A line with a slope of 0 is a horizontal line parallel to the x- axis with equation
x = c
where c is the value of the x- coordinates the line passes through.
the line passes through (3, - 3 ) with x- coordinate 3 , then
x = 3 ← equation of line
Answer:
f(x) = -3
Step-by-step explanation:
it will be a constant function because if the slope = 0, the y value is not changing
so the equation of the line, f(x) = ax+b, will be f(x) = 0x+b
f(x) = b, b is the y value here
(20+1 )*15 - 300*15= ?
PLEASE HELP!!
please help me I don’t get it and It has to be turned in in 15 mins
How do you graph Y= -3 +6
With this graph
Answer:
a horizontal line at three on the y axis
Step-by-step explanation:
13 is 65% of what number?
Answer:
20
Step-by-step explanation:
set up equation
13/x=65/100
cross multiple: 1300=65x
divide 1300/65=20
A die is rolled 3 times. What is the
probability of getting I's on each
roll?
Answer:
1/6 I think. but for each individual its 1/6 but for all three, i don't know sorry
Step-by-step explanation:
can somone help me with tjis pls
Answer:
LinePlanePlease mark as Brainliest
By using the definition of collinear and coplanar points, we will see that
7) Collinear points: All lie on the same line.8) Coplanar points: All lie on the same plane.What do collinear and coplanar mean?We say that a given set of points is collinear if all the points belong to the same line, just to give an example, any pair of two points is collinear, as we always can find a line that passes through two points.
On other hand, a set of points is coplanar if the points lie on the same plane. Remember that a plane is defined by a line and a point outside of it.
With these definitions in mind, we can answer:
7) Collinear points: All lie on the same line.8) Coplanar points: All lie on the same plane.If you want to learn more about collinear and coplanar, you can read:
https://brainly.com/question/1593959
A group of friends goes out to breakfast and decides to split the bill. Their bill is $34.00, plus they want to leave an 18% tip. The final amount will be split 4 ways.
What is the amount each person will pay?
$8.50
$9.78
$10.03
$10.18
Answer:
it's 10.03
Hope this helps :D
Step-by-step explanation:
Took the test
Answer:
$10.03
Step-by-step explanation:I took the test
Which expression is equivalent to mc014-1?