noahbred
  • noahbred
Please help Evaluate 5(a – 2b) when a = –3 and b = 5. A. 65 B. 35 C. –65 D. –25
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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confluxepic
  • confluxepic
All you do is plug in the values and solve! @noahbred
confluxepic
  • confluxepic
5(a-2b) is 5((-3)-2(5))
noahbred
  • noahbred
is it -25?

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noahbred
  • noahbred
I got 0 uhhhh
confluxepic
  • confluxepic
First do 2 times 5.
confluxepic
  • confluxepic
2 times 5 = ?
noahbred
  • noahbred
10
confluxepic
  • confluxepic
Yes.
confluxepic
  • confluxepic
Now do -3 - 10.
noahbred
  • noahbred
7
AlexandervonHumboldt2
  • AlexandervonHumboldt2
no
noahbred
  • noahbred
um 13
AlexandervonHumboldt2
  • AlexandervonHumboldt2
no
confluxepic
  • confluxepic
-3-10 is -13.
confluxepic
  • confluxepic
You take negative 3 and subtract 10 from it. You get -13.
noahbred
  • noahbred
so 10-13?
confluxepic
  • confluxepic
How did you get that?
noahbred
  • noahbred
because both equations i just put together
confluxepic
  • confluxepic
Let me show you a step by step process.
confluxepic
  • confluxepic
\[5(a-2b)\]
confluxepic
  • confluxepic
Now you plug in -3 for a and 5 for b.
confluxepic
  • confluxepic
\[5(-3~-(2\times5))\]
noahbred
  • noahbred
it 35
confluxepic
  • confluxepic
\[5(-3~-(10))\]
confluxepic
  • confluxepic
\[5(-3-10)\]
confluxepic
  • confluxepic
\[5(-13)=?\]
noahbred
  • noahbred
65 its 65
♪Chibiterasu
  • ♪Chibiterasu
yup
confluxepic
  • confluxepic
No.
confluxepic
  • confluxepic
It's NEGATIVE 65.
noahbred
  • noahbred
THANKSS sorry i am really dumb
confluxepic
  • confluxepic
The negative symbol in front of 13 makes the product of -13 and a positive number become negative.
confluxepic
  • confluxepic
No, you're not dumb at all. You just need time to understand math. It's actually quite fun. :)
UsukiDoll
  • UsukiDoll
Awesome explanation @confluxepic
confluxepic
  • confluxepic
Thank you.
noahbred
  • noahbred
thankss
confluxepic
  • confluxepic
Now let's do a practice problem. @noahbred What is 10+a-5b if a is 2 and b is 3?
confluxepic
  • confluxepic
The first step is the simplest. All you do is plug in the values.
noahbred
  • noahbred
tanks annd yah i wil practice more

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