Use Gauss-Jordan elimination to solve the following system of linear equations x_1+x_2 3-x_3 + 3x_4 = 2 -2x_1 - x_2+5x_3-5x_4=-4 2x_1-4x_3 + 4x_4 = 4 -x_1-6x_2+8x_38x_4 = -2
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Answer:
Apologies, but it seems like there is missing information in the equation you provided after "+ 3x_4". Could you please provide the complete equation or check and confirm the correctness of the input?
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Lisa is 4 years older than three times her brother Sammy's age. Let 's' represent Sammy's age and 'l' represent Lisa's age. Which expression represents Lisa's age? • l = s + 4• l = 3s• l = 3s + 4• l = 4s + 3
Prove: m= 10
please help it’s a proof
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Answer:
It is 10 (m=10)
Step-by-step explanation:
3 (10-2) + 14 Subtract whats in the parentheses
3 (8) + 14 Multiply 3 and 8
24 + 14 Add the remaining to get the sum ( 24 + 14 )
38 (Your total)
~~~Hope this helps~~~
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X=the number of days Brandon missed.
Subtract 20 from both sides; 5x=225
Then divide by 5; x=45
It has been 45 days since Brandon missed school.
Answer:
The answer is 53
245 = 5y - 20 | y = 53
Step-by-step explanation:
subtracting 20 ( - 20) represents "twenty days less"
5y represents "five times the number of days"
This is all being compared to Kendra's 245 days of perfect attendance which is why it's "245 ="
Plug it in! & don't forget PEMDAS ----> 5(53) - 20 = 245
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The solution to the inequality 3b - 7 < 32 is b < 13.
To solve the inequality 3b - 7 < 32, we can isolate the variable b.
Let's add 7 to both sides of the inequality:
3b - 7 + 7 < 32 + 7
Simplifying:
3b < 39
Now, divide both sides of the inequality by 3:
(3b)/3 < 39/3
Simplifying further:
b < 13
Therefore, the solution to the inequality 3b - 7 < 32 is b < 13.
To learn more on Inequalities click:
#SPJ6
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Answer:
Draw 20 equilateral triangles such that 5 triangles having sides measure 4 cm , 7 triangles have sides measure 7 cm , 3 triangles have side 10 cm and rest of the triangles have side of measure 5 cm.
This will become a set of equilateral triangles .
Let consider a subgroup set of the original set of having equilateral triangle with side-length of 5 cm.
Then the number of triangle having side-length 5 cm= 20-5-7-3=5
Now, the fraction of the group having triangle with side- length 5 cm is given by:-
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For example:
we draw a line segment of 4 inch.
For the 'copy', you would 'measure' the line drawn, and duplicate it to the right, measuring it to make sure it is the exact length of the first line.
To bisect the original line segment measure the line with a ruler or other device, and calculate 1/2 distance from one end, mark it, measure from left end to mark, make sure right section is equal in length. Line can also bisect by using a compass. open the compass more than half length of the line segment and them draw an arc from it by placing it at one end of the line segment , repeat the process from the other end of the line segment and then a point at which both these arc intersect will be the mid point of the line segment.
Draw an angle, and copy it to the right of the original angle. Explain your steps, and justify each step used.
Draw an angle of 90 degree and labeled it to avoid confusion.
Now use a scale to draw a ray and label the vertex point so we can know the point where to place compass.Use compass to draw an arc on angle.This angle will help you measure where to put the new point on our new angle.
Similarly draw the same arc on the new ray. This is the first step in finding the new point.
now use compass to measure the difference between the two places where the arc meets the angle on angle . use the measurements from the previous step to draw another arc. This step is to help establish a point where the two arcs meet.Now draw a point where the two arcs met and drew a line through it.