tishara429
9-2(4x+5) if x=-4
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Suckatmath94
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what are your options?
tishara429
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what do u mean
Suckatmath94
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is your question multiple choice?
tishara429
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no
tishara429
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can u tye it in steps
tishara429
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can u type it in steps
agustin_pc
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if x = -4
9-2(4(-4)+5)
9-2(-16+5)
9-2(-11)
9+22
31
tishara429
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can u do it all together thev whole promble
Trexy
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just replace the x to 9-2(4x+5)
so it will be 9-2 (4(-4)+5)
like @agustin_pc put..
Trexy
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and do the first paranthesis..
Trexy
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Follow PEMDAS...
tishara429
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\[-7x-3(9-7x) if x=-2\]
tishara429
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help
Trexy
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same thing
sine the x is given
just replace the x to -2
tishara429
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can u type the promble in steps please
agustin_pc
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-7(-2)-3(9-7(-2))
Trexy
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−7x−3(9−7x)ifx=−2
since x is given, we replace the x to -2
-7(-2)-3(9-7(-2))
and we follow the PEMDAS
which is parentheses first right, so
-7(-2)-3(23)
and same thing again
-7(-2) is 14
-3(23) is -69
so its 14-69
and u finish it..
and i think thats how you do it.. or someone can check mine and if something is wrong just recheck it and thankz
Trexy
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when it comes to parentheses for me I used my TI-84 because its easy for me.. you can do it in the paper and if your not sure I use calculator.. so yeah
Trexy
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did you get it? hope u understand
tishara429
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6(3x-1)-10x if x=7
Trexy
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really??
Trexy
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you do it first
replace the x to -7
when you replace it put parentheses on it so u dont get confused
Trexy
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tell me if did and we go to the next round
agustin_pc
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if x =7 -> 6(3(7)-1)-10(7), 6(21-1)-70, 6(20)-70, 120-70 = 50
Trexy
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he got it ^
tishara429
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7-4x+2(5x+8) if x=-2
Trexy
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Ma'am do u know how to do it?