Тема: Online Student Edition - Glencoe

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1. the question really just look like 13+2x=5 so, you subtract 13 from 5 to move it to the left. Then you divide by 2 and you have the answer to x. 2. i can just guess and check to get the answer. which is all real number greater than 3 and less then 17 3. x is all reall number past 6 so yeah just guess and check

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Varsity Tutors is a live learning platform. Instructors are independent contractors with their own teaching styles, methods, and materials.

Pearson Prentice Hall and our other respected imprints provide educational materials, technologies, assessments and related services across the secondary curriculum.

No ads, no subscriptions. We are a not‑for‑profit because we believe in a free, world-class education for anyone, anywhere.

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Varsity Tutors is a live learning platform. Instructors are independent contractors with their own teaching styles, methods, and materials.

Pearson Prentice Hall and our other respected imprints provide educational materials, technologies, assessments and related services across the secondary curriculum.

No ads, no subscriptions. We are a not‑for‑profit because we believe in a free, world-class education for anyone, anywhere.

Embark on a virtual treasure hunt as you tackle maths challenges and reveal fun prizes. The more you practise, the more you win!

With IXL, it''''s easy to meet your learning objectives! IXL''''s microskills helps students learn complex topics, one step at a time.

ANSWER x = - 122/11 y = 72/11 z = 71/11 Equation 1 = x+2y=2 Equation 2 = 2x+3y-z=-9 Equation 3 = 4x+2y+5z=1 Take Equations 2 & 3 and multiply Equation 2 by 5 to enable us to eliminate z 10x + 15y - 5z = - 45 ie (Eq 2) * 5 4x + 2y + 5z = 1 Add the two equations together to eliminate z x(10 +4) + y(15 +2) + z(-5 +5) = -45 + 1 Simplify 14x + 17y = - 44 (call this Equation 4) Now we have two simultaneous equations (Eqs 1 and 4) that do not include z) x +2y = 2 (Equation 1) 14x + 17y = -44 (Equation 4) Multiply Equation 1 by 14 to enable us to eliminate x 14x + 28y = 28 (Equation 1) * 14 14x + 17y = - 44 (Equation 4) Subtract bottom from top x(14 - 14) + y(28 - 17) = 28 -(-44) Simplify 11y = 72 y = 72/11 Equation 1 x + 2y = 2 x + 144/11 = 2 x = 22/11 - 144/11 x = - 122/11 Equation 2 2x + 3y - z = -9 -244/11 + 216/11 - z = - 99/11 -28/11 - z = - 99/11 - z = - 71/11 z = 71 / 11 CHECK in Equation 3 4x + 2y + 5z = 1 - 488/11 + 144/11 + 355/11 = 1 -488/11 + 499/11 = 1 11/11 = 1 1 = 1 therefore correct x = - 122/11, y = 72/11 and z = 71/11

n= - 4 because n+4=0 so n= -4 now -4_l 1 2 -5 12 .....+0 -4 +8 -12 ....1 -2 3 0 (notice the numbers are supposed to line up) so 1n^2-2n+3 Remainder 0

Varsity Tutors is a live learning platform. Instructors are independent contractors with their own teaching styles, methods, and materials.

Pearson Prentice Hall and our other respected imprints provide educational materials, technologies, assessments and related services across the secondary curriculum.

No ads, no subscriptions. We are a not‑for‑profit because we believe in a free, world-class education for anyone, anywhere.

Embark on a virtual treasure hunt as you tackle maths challenges and reveal fun prizes. The more you practise, the more you win!

With IXL, it''s easy to meet your learning objectives! IXL''s microskills helps students learn complex topics, one step at a time.