3x+7y=17
3x-6y=4
solve this by elimination method plzzzzzzzzzzzzz helppppppppppppp meeeeeeeeeee
Answers
Answer:
[tex](\frac{10}{3}, 1)[/tex]
Step-by-step explanation:
1) In order to solve a system of equations with the elimination method, you need to add or subtract the two equations and "eliminate" variables by canceling out terms. This leaves you with an equation with only one variable to solve. Then, once you solve that equation, you can substitute the answer you got into one of the system's equations to find either the x or y value.
This problem already has one 3x in each equation, so let's focus on canceling that term out, eliminating the x variable. To set up this situation, we need one 3x to be negative, so let's multiply the terms in 3x-6y = 4 by -1, which gets us to -3x + 6y = -4. Now let's "cancel out" those x variables by adding them together. (This work is shown in the first picture.)
Remember to add the other terms. This leaves us with the equation 13y = 13. By isolating y, we can find its value, which leaves us with y = 1.
2) Next, let's substitute 1 for y in one of the two equations. In this case, I used 3x + 7y = 17. Then, isolate x to find its value:
[tex]3x + 7 (1) = 17\\3x + 7 = 17 \\3x = 10 \\x = \frac{10}{3}[/tex]
Therefore, the answer would be [tex](\frac{10}{3} , 1)[/tex].
Related Questions
this one is for yakoro is if your not yakoro keep scrolling
here ya go
Answers
Answer:
Aaaawwwww thx so much
Step-by-step explanation:
Yes all of you peasants bow, I am the queen!
Answer:
I'll answer
Step-by-step explanation:
thx for the points XD
Pls help due soon!!!
Answers
Answer:
B) 10 m
Step-by-step explanation:
Area is 20 and Height is 4
Ok so
AREA of a triangle is =1/2Base Times Height
work back
Area=20
Height=4
b=Base
20=1/2b*4
Simplify both sides of the equation.
20=2b
Flip equation
2b=20
Divide both sides by 2
b=10
Base=10 m
Answer:
10m
Step-by-step explanation:
Area of a triangle: [tex]\frac{1}{2}[/tex]bh
where 'b' = base and 'h' = height
plug in known values: 20 = [tex]\frac{4b}{2}[/tex]
cross-multiply: 4b = 40
b = 10
Which expression is equivalent to 10 square root 5
awnsers
a.) square root 500
b.) square root 105
c.) square root 50
d.) square root 15
Answers
Answer:
[tex]a) \sqrt{500} [/tex]Step-by-step explanation:
[tex]10 \sqrt{5} [/tex]
[tex] \sqrt{ {10}^{2} } \sqrt{5} [/tex]
[tex] \sqrt{5 \times {10}^{2} } [/tex]
[tex] \sqrt{5 \times 100} [/tex]
[tex] \sqrt{500} [/tex]
Answer:
500
Step-by-step explanation:
I took the test
When a point moves right on a coordinate plane,
what happens to its x-value?
Answers
Answer:
The coordinate plane is like a cross right? Just remember if you go right the x value is going into the positive direction, if you go up the y value is also going into the positive direction. And positive direction means the value will increase.
So (3,0), would be further left than (10,0). Or (0,5) would be higher than (0,2) on the graph.
(9b +9) + (4n - 4) + (6d + 2) =
Pleaseee help hurry
Answers
Answer: 9b+4n+6d+7
Step-by-step explanation:
1. 9b+9+4n−4+6d+2
2. 9b+4n+6d+(9-4+2)
3. 9b+4n+6d+7
4n+6d+9b+7
Explanation
Subtract 4 from 9 to get 5
Add 5 and 2 to get 7
2 tan 30°
II
1 + tan- 300
Answers
Question:
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex]
Answer:
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex][tex]= sin(60^{\circ})[/tex]
Step-by-step explanation:
Given
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex]
Required
Simplify
In trigonometry:
[tex]tan(30^{\circ}) = \frac{1}{\sqrt{3}}[/tex]
So, the expression becomes:
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{2 * \frac{1}{\sqrt{3}}}{1 + (\frac{1}{\sqrt{3}})^2}[/tex]
Simplify the denominator
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{2 * \frac{1}{\sqrt{3}}}{1 + \frac{1}{3}}[/tex]
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{\frac{2}{\sqrt{3}}}{1 + \frac{1}{3}}[/tex]
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{\frac{2}{\sqrt{3}}}{ \frac{3+1}{3}}[/tex]
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{\frac{2}{\sqrt{3}}}{ \frac{4}{3}}[/tex]
Express the fraction as:
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex][tex]= \frac{2}{\sqrt 3} / \frac{4}{3}[/tex]
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{2}{\sqrt 3} * \frac{3}{4}[/tex]
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{1}{\sqrt 3} * \frac{3}{2}[/tex]
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{3}{2\sqrt 3}[/tex]
Rationalize
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{3}{2\sqrt 3} * \frac{\sqrt{3}}{\sqrt{3}}[/tex]
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{3\sqrt{3}}{2* 3}[/tex]
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex] [tex]= \frac{\sqrt{3}}{2}[/tex]
In trigonometry:
[tex]sin(60^{\circ}) = \frac{\sqrt{3}}{2}[/tex]
Hence:
[tex]\frac{2tan30^{\circ}}{1 + tan^2(30^{\circ})}[/tex][tex]= sin(60^{\circ})[/tex]
If 2a+4b=5 and a is equal to three times b, what is 3a?
Answers
Answer:
3a=4.5
Step-by-step explanation:
it says that "a is equal to 3 times b", which translates to a=3b
We can substitute a as 3b in 2a+4b=5
2(3b)+4b=5
multiply
6b+4b=5
add
10b=5
divide by 10
b=1/2
since it's given that a=3b, we can multiply 1/2 by 3
a=3/2
3a is 3 times a, so we can mutiply 3(3/2)=9/2=4.5
Hope this helps!
The heights of Major League Baseball players in the year 2012 were approximately Normally distributed with the mean = 73.5, and the standard deviation = 2.25 in.
1) How many of the 1400 players are expected to have heights between 69.5 in. and 76.5 in.?
2)Use technology to determine the number of players with z-scores for height between -1.23 and +0.75.
3) Use technology to determine the expected percentage of players with heights in the following range: 70 in. and 76 in.
4) Use technology to determine the expected percentage of players with heights in the following range: 72 in. and 73 in.
5) How many more players are expected to have heights above 73 in. than between 71 in. and 74 in.?
Answers
Answer:
69 xD Funny LOL GeT ReKt
Step-by-step explanation:
Kristen is making accessories for the soccer team. She uses 763.98 inches of fabric on headbands for 32 players and 2 coaches. She also uses 272.32 inches of fabric on wristbands for just the players. How much fabric was used on a headband and wristband for each player?
Answers
Answer:
22.47 in of fabric on headbands
8.51 in of fabric on wristbands
Step-by-step explanation:
Step one:
given data
the total amount of person players plus coaches= 32+2= 34
for each person she uses = 763.98/32= 22.47 in of fabric on headbands
She also uses 272.32 inches of fabric on wristbands for just the players
For each player, she will use= 272.32/32= 8.51 in of fabric
Hence for each player, she used
22.47 in of fabric on headbands
8.51 in of fabric on wristbands.
Angelina has 5 cakes. She wants to cut them into 2/5 pieces. How many pieces will she be able to cut?
Answers
Answer:
12 1/2
Step-by-step explanation:
Answer:
12 pieces and 1/5 is left over
Step-by-step explanation:
Solving 2 step equations
Check the image for questions
This is for my sister
Answers
Answer:
1. x = 3
2. p = -3
3. a = 4
4. n = -2
5. g = 2
6. k = -18
7. s = 18
8. c = -8
9. a = -6
10 v = 9
There will be 666 people at ellie's pie party. She wants to bake enough pie so that each person can eat at least \dfrac15 5 1 %e2%80%8b start fraction, 1, divided by, 5, end fraction of a pie. What is the minimum number of pies ellie should bake?
Answers
Answer: 2 pies
Step-by-step explanation:
Here is the correct question:
There will be 6 people at Ellie's pie party. She wants to bake enough pie so that each person can eat at least 1/5 of a pie.What is the minimum number of pies Ellie should bake?
Since each person can eat at least 1/5 of the pie and there are 6 people, the 6 people would them eat at least (6 × 1/5) = 6/5 pie. Since we are talking about whole numbers with regards to the pie, it simply means that at least 2 pies should be baked.
5m – 8 = 3m + 8 for m
Answers
Answer:
m=8
Step-by-step explanation:
(0.9)+'
What is the approximate rate of decay in the exponential function f (t)
?
A
0.02
B.
0.1
С
0.11
D
0.9
Answers
Answer:
soooo u do dis and dat and OPE lookit the time
Dum Step-by-step explanation:
looks like its time to act dum ayy friend me. im givin out free points every weekday. if its friday, i do it every hour, called free point friday. check me out.
3
Which point on the number line represents 4?
B
с
D
D
o
В
O
Answers
Answer: B
Step-by-step explanation:Because you look at the the value place and make sure it is under zero and also make sure it is in the correct spot.
plz leave a like
A polynomial function is also:
a. infinite.
d. indiscriminate.
c. rational.
d. irrational.
Answers
Answer:
A. Infinite
Step-by-step explanation:
First lets define a polynomial function. A polynomial function is a function that involves only non-negative integer powers or only positive integer exponents of a variable in an equation.
Well Infinite functions are functions that have an answer of all real numbers right? So that would make sense.
Honestly I've never heard of an indiscriminate.
Irrational function has answers that can only be zero or above never negative because its inside a radical sign and radical answers can't be negative. If you've ever seen the graph of an irrational function though it looks nothing like a polynomial.
A rational function is a function that the polynomial in it does not equal zero.
A polynomial function is not always a rational function though. But it can be.
I hope this helps. <3
The Polynomial function is also a :
Rational Function
What is Discriminant in Math?Discriminant of a polynomial in math is a function of the coefficients of the polynomial.
There can be irrational Coefficient in a polynomial.
Yes, All polynomials are rational expressions but all rational expressions need not be polynomials.
Consider a polynomial p(x).This can be written as a rational expression as p(x)/1.
So, The Polynomial function is also a :
Rational Function
Learn more about Polynomial function at:
https://brainly.com/question/11298461
#SPJ2
Between 10 pm and 7:45 am the water level in a swimming pool decreased by 9/50 inch. Assuming the constant rate how much did it drop each hour
Answers
So the correct answer is “6/325”
Using the scenario below, what would you do in each step of the SIPDE
process:
You are driving at 55 mph on an Interstate. A car in front of you has a
blow out on its right front tire.
Answers
Answer:?
Step-by-step explanation:
Answer: scanning, predicting, identifying, decision making, and executing
Step-by-step explanation:
HELP ASAP Store A sells 5 bagels for $2.05. Store B sells 3 bagels for $1.35. How do the unit rates compare?
A. The bagels at Store A are $0.04 more expensive than the bagels at Store B.
B. The bagels at Store A are $0.03 more expensive than the bagels at Store B.
C. The bagels at Store B are $0.04 more expensive than the bagels at Store A.
D. The bagels at Store B are $0.03 more expensive than the bagels at Store A.
3 / 24
Answers
Step-by-step explanation:
Store A:
5 bagels for $2.05, 1 bagel for $2.05/5 = $0.41.
Store B:
3 bagels for $1.35, 1 bagel for $1.35/3 = $0.45.
Hence the bagels at Store B are $0.04 more expansive than the bagels at Store A. (C)
Answer:
1. B
2. A
3. B
4. C
A roofing contractor has 29 bundles of roofing shingles that he needs to carry up a ladder and put onto a roof he carries two bundles at a time how many bundles are still on the ground after his seventh trip up the ladder
Answers
Answer:
15 bundles of roofing shingles
Step-by-step explanation:
Total bundles of roofing shingles = 29
He carries two bundles at a time
How many bundles are still on the ground after his seventh trip up the ladder?
First trip = 2 bundles of roofing shingles
Second trip = 2 bundles of roofing shingles
Third trip = 2 bundles of roofing shingles
Fourth trip = 2 bundles of roofing shingles
Fifth trip = 2 bundles of roofing shingles
Sixth trip = 2 bundles of roofing shingles
Seventh trip = 2 bundles of roofing shingles
Total bundles of roofing shingles carried in 7 trips = 2 + 2 + 2 + 2 + 2 + 2 + 2
= 14 bundles of roofing shingles
Bundles still on ground after 7 trips = Total bundles of roofing shingles - Total bundles of roofing shingles carried in 7 trips
= 29 - 14
= 15 bundles of roofing shingles
Jhon is saving for his trip to see Alamo. He started with 22 in his savings account every week he earns 15$ For babysitting.Out of that he spend 7$ And saves the rest Jhon uses the rule add 8 to find out how much money he has at the end of each week
Answers
Answer: $30
Step-by-step explanation:
John earns $15 and spends $7. The amount left for saving is;
= 15 - 7
= $8
He started with $22 so the new total is;
= 22 + 8
= $30
One serving of milk has 120 calories. If one serving is equal to 1 cup, how many calories are in 1 fluid ounce? (1 cup=8 fluid ounces)
Answers
Identify the segment bisector of RT
Then Find RT
Answers
Here,
R = 7y-4
S = 2y+6
T = ?
now,
R-S=T
7y-4+2y+6
7y+2y-4+6
9y+2
again,
R+T
7y-4+9y+2
15y-2
Therefore,
RT = 15y-2
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a)The segment bisector of RT will be 4.5y+1.
b)The value of RT will be 9y+2.
What is a segment bisector?A segment bisector is a line, ray, line segment, or point that divides a line segment into two equal halves at its center. A line segment bisector divides a line segment into two equally sized pieces. It goes through the segments halfway. Line PQ in the image below serves as AB's bisector.
It is given that,
RS = 7y-4
ST = 2y+6
Lines or portions of lines that cut across the middle are known as segment bisectors. We designate the segments with segment marks when two segments are congruent. According to the midpoint formula, the midpoint for the endpoints (x₁,y₁) and (x₂,y₂) is ((x₁+x₂)/2,(y₁+y₂)/2).
We have to find the segment bisector of the RT.
RT = RS + ST
RT = 7y-4 + 2y+6
RT =9y+2
Thus, the value of RT will be 9y+2 and the segment bisector of RT will be 4.5y+1.
Learn more about the segment bisector here:
brainly.com/question/4137998
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Find the volume of a pyramid with a square base, where the perimeter of the base is 15.8\text{ ft}15.8 ft and the height of the pyramid is 20.4\text{ ft}20.4 ft. Round your answer to the nearest tenth of a cubic foot.
Answers
Answer:
The volume of the Pyramid is 318.3 cubic foot
Step-by-step explanation:
Here, we want to calculate the volume of the Pyramid
Mathematically, the volume of the pyramid is the area of the square base multiplied by the height of the Pyramid.
Since the perimeter is 15.8 and the formula for the perimeter is 4L
we can get the length of the side of the square
The length of the side will be 15.8/4 = 3.95
The area of the square base is thus equal to;
3.95^2 = 15.6025 square feet
Now we can multiply this by the height
Mathematically, that will be;
15.6025 * 20.4 = 318.291 which is approximately 318.3 cubic foot
Answer:
106.1 ft
Step-by-step explanation:
plsplsplsplsplsplsplspsslspsplslsplssppslspslslplspslshelp
Answers
Answer:
0.02
Step-by-step explanation:
divide the money by how much you have..
i dont know if its right but i hoped i helps
Answer:
$0.02 each lollipop
Step-by-step explanation:
divide $20 by quantity to get unit rate
20/1000 = 2/100 = 2 cents
PLZ HELP
Write an equation of the given line in slope-intercept form with the given points (1,1) and (4,2)
Answers
Answer: Find the equation of a line with a given slope and containing the given point. Write the equation in slope-intercept form.
m = − 3/4, point (8, −4)
Find the equation of a line with a given slope and containing the given point. Write the equation in slope-intercept form.
m = − 7/2, point (−8, −4)
Find the equation of a line with a given slope and containing the given point. Write the equation in slope-intercept form.
m = −6, point (−1, −4)
Find the equation of a line with a given slope and containing the given point. Write the equation in slope-intercept form.
a horizontal line containing (−3, -5). #2
avatar+51
+2
I'm going to answer the solution in Point-Slope and Slope-Intercept.
Slope - Intercept form is this: y = mx + b
We know that (x, y) is a point on the line, m is the slope, and b is the y-intercept.
From the given information we have that it has a slope of 2 (m = 2), and one of the points on the line is (3, 9) which means that (x = 3, y = 9)
Plugging in we get:
y = mx + b
9 = 2*3 + b
9 = 6 + b
b = 3
Therefore the y-intercept is 3. After having this information we can construct our equation.
We now have to put this in the point-slope form which is: (y - y1) = m(x - x1)
Transferring what we had before we can plugin and get y - 9 = 2(x - 3)
Comment down if you have any queries or any questions on the solution. Tell me as soon as possible. Good luck in your Algebra Pursuit!! :)
Enjoy!! I put the answer in both point-slope and slope-intercept if you haven't noticed!! :)
So our answer is:
y - 9 = 2(x - 3).
2x + 2y = 350
What is X and Y?
Answers
y = -1x + 175
Plug in any value for x to find y
Example: when x = 1
Y = -1(1) + 175, y = 174
In this case, (1,174)
Keep doing that, there are many solutions!
$75 divided by 18% tip
Answers
Answer:
.18
Step-by-step explanation:
What is a 18 percent tip by bill amount?
...
What's a 18% Tip on a $75 Bill?
Bill: $75.00
Tip: $13.50
Total: $88.50
sooooo 13.50 divided by 75.00 = .18
byeeeee :)
Rewrite 300 in simplest radical form?
Answers
Answer:
10√3
Step-by-step explanation:
First we write the square root of 300 like this:
√300
The largest perfect square of the factors of 300 is 100. We can therefore convert √300 like this:
√100 × 3
Next, we separate the numbers inside the √ as such:
√100 × √3
√100 is a perfect square that equals 10. We can therefore put 10 outside the radical and get the final answer to square root of 300 in simplest radical form as follows:
10√3
PLEASE HELP WILL MARK BRAINLIEST!!!
Answers
Answer: i think it may be b
Step-by-step explanation: