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Mathematics 7 Online
OpenStudy (anonymous):

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OpenStudy (anonymous):

Evaluate –6(x – 2y) when x = –3 and y = –5 A. –42 B. 80 C. –80 D. –16

OpenStudy (anonymous):

–6(x – 2y) = –6(-3 – 2(-5)) = -6 (-3+10)= -6*7=-42

OpenStudy (anonymous):

ok thx i have a few more plz stay and help

OpenStudy (anonymous):

Simplify: (–4) • (9) – (5) • (–2) A. –36 B. –26 C. 2 D. 82

OpenStudy (anonymous):

Simplify: (–4) • (9) – (5) • (–2) A. –36 B. –26 C. 2 D. 82

OpenStudy (anonymous):

(–4) • (9) – (5) • (–2) = -36+10= -26 Option B. –26 is correct Ans

OpenStudy (anonymous):

ok thx again can you help me with 2 more

OpenStudy (anonymous):

Simplify: –5(x – 3) + 2(a – 9) A. –5x + 2a + 33 B. –5x + 2a + 4 C. –5x + 2a – 3 D. –5x + 2a – 33

OpenStudy (anonymous):

–5(x – 3) + 2(a – 9) =-5x+15+ 2a-18= -5x +2a-3 Hence option C. –5x + 2a – 3 is correct Ans

OpenStudy (anonymous):

last one

OpenStudy (anonymous):

Simplify: –6(x – 3) – 4(y + 5) + (–5)(7 – 2b) A. –6x –4y – 10b – 3 B. –6x –4y + 10b – 37 C. –6x –4y + 10b + 3 D. –6x –4y + 10b + 33

OpenStudy (anonymous):

–6(x – 3) – 4(y + 5) + (–5)(7 – 2b) = –6x +18 – 4y - 20 -35 + 10b = –6x – 4y+ 10b-37 Thus option B. –6x –4y + 10b – 37 is the correct Ans.

OpenStudy (anonymous):

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OpenStudy (anonymous):

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OpenStudy (anonymous):

thanks alot

OpenStudy (anonymous):

i did fan you

OpenStudy (anonymous):

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