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4vir4ik [10]
2 years ago
10

RSM HW HELP!!! PLEASE HELP ME ASAP!!!! I WILL GIVE BRAINLIEST IF YOU SOLVE THEM ALL CORRECTLY!!! THANKS!

Mathematics
2 answers:
cluponka [151]2 years ago
8 0

b)

|2x−3y| if x=0.5; y=−0.7

Substitute: |2(0.5)-3(-0.7)|

Simplify: |1+2.1|

Simplify: |3.1|

Since it is an absolute value, it will always be positive: 3.1

d)

|−3 |x| +2x−1| if x=−5

Substitute: |-3(|-5|)+2(-5)-1|

Absolute value is positive: |-3(5)+5(-5)-1|

Simplify: |-15-25-1|

Simplify: |-41|

Absolute value always positive: 41

Lena [83]2 years ago
5 0

<em><u>Answer for the first question:</u></em>

<em><u></u></em>a)3a+5b~,when~a=-2;b=-1<em><u></u></em>

<em><u></u></em>=(3)(-2)+(5)(-1)<em><u></u></em>

<em><u></u></em>=-11<em><u></u></em>

<em><u></u></em>

<em><u>Answer for the second question:</u></em>

<em><u></u></em>b)2x-3y~,when~x=0.5;y=-0.7<em><u></u></em>

=(2)(0.5)-(3)(-0.7)

=3.1

<em><u>Answer for the third question:</u></em>

<em><u /></em>c)4a+8-a,~when~a=-2<em><u /></em>

<em><u /></em>=(4)(-2)+8-(-2)<em><u /></em>

<em><u /></em>=2<em><u /></em>

<em><u /></em>

<em><u>Answer for the fourth question:</u></em>

<em><u /></em>d)-3x+2x-1,~when~x=-5<em><u /></em>

<em><u /></em>=(-3)(-5)+(2)(-5)-1<em><u /></em>

<em><u /></em>=4<em><u /></em>

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