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2 years ago

What is the product? (5r+2)(3r-4)

Mathematics

2 answers:

gulaghasi [49]2 years ago

6 0

Remember to follow the FOIL method (First, Outside, Inside, Last)

(5r)(3r) = 15r²

(5r)(-4) = -20r

(2)(3r) = 6r

(2)(-4) = -8

Simplify. Combine like terms

15r² -20r +6r -8

15r² (-20r + 6r) - 8

15r² - 14r - 8 is your answer

hope this helps

Alex787 [66]2 years ago

5 0

(5r + 2)(3r - 4)

15r^2 - 20r + 6r - 8

15r^2 - 14r - 8

hope this will help you buddy

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3 years ago

7.3 homework help me

olga_2 [115]

Answer:

1. Yes

∆RST ~ ∆WSX

by SAS

2. Yes

∆ABC ~ ∆PQR

by SSS

3. Yes

∆STU ~ ∆JPM

by SAS

4. Yes

∆DJK ~ ∆PZR

by SAS

5. Yes

∆RTU ~ ∆STL

by SAS

5. Yes

∆JKL ~ ∆XYW

by SAS

6. No

7. Yes

∆BEF ~ ∆NML

by SAS

8. Yes

∆GHI ~ ∆QRS

by SSS

9. x=22

10. x=12

Step-by-step explanation:

1. RS/WS=ST/SX and m<RST=m<WSX

2. AB/PQ=8/6=4/3

BC/QR=AC/PR=12/9=4/3

AB/PQ=BC/QR=AC/PR

3. ST/JP=10/15=2/3

SU/JM=14/21=2/3

ST/JP=2/3=SU/JM

and m<TSU=70°=m<PJM

4. DK/PR=8/4=2

JK/ZR=18/9=2

DK/PR=2=JK/ZR

and m<DKJ=65°=m<PRZ

5. RT/ST=UT/LT

and m<RTU=m<STL

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JL/XW=36/24=3/2

KL/YW=10/9≠3/2=JL/XW

7. BF/NL=24/16=3/2

BE/NM=39/26=3/2

BF/NL=3/2=BE/NM

and m<EBF=m<MNL

8. GH/QR=32/20=8/5

HI/RS=40/25=8/5

GI/QS=24/15=8/5

GH/QR=HI/RS=GI/QS=8/5

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Simplifying the fraction on the right side of the equation:

x/33=2/3

Solving for x: Multiplying both sides of the equation by 33:

33(x/33)=33(2/3)

x=11(2)

x=22

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Simplifying the fraction on the right side of the equation:

x/16=3/4

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16(x/16)=16(3/4)

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x=12

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