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Alla [95]
3 years ago
6

85 points, please answer ASAP question below, my brain is hating me today, I feel like this is easy but I just can't get it

Mathematics
2 answers:
san4es73 [151]3 years ago
5 0

Answer:

25

Step-by-step explanation:

420 - 45 = 375

375 / 15 = 25

Mice21 [21]3 years ago
4 0

Answer:

25 pages

Step-by-step explanation:

To start, you need to subtract the pages he's already read.

420 - 45 = 375

He'd have 375 pages left to read

If you equally distribute the number of pages left (375) by the number of days (15) you come across this:

375 ÷ 15 = 25

He'd have to read 25 pages a day.

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Step-by-step explanation:

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I need help ASAP because I need done before 4:00pm
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Step-by-step explanation:

8 0
3 years ago
Simplify negative 8 over 3 divided by negative 2 over 6
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5 0
3 years ago
Find values a and b that satisfy a∙〈5,-4,0〉+b∙〈2,2,-3〉=〈11,-16,-6〉.
WARRIOR [948]

The right hand side of the equation is 〈11 , -16 , 6〉

The values of a and b are a = 3 , b = -2

Step-by-step explanation:

If n . <a , b> + m . <c , d> = < x , y>, then

  • na + mc = x
  • nb + md = y

∵ a  ∙〈5 , -4 , 0〉 + b ∙ 〈2 , 2 , -3〉 = 〈11 , -16 , 6〉

- By using the rule above

∴ a(5) + b(2) = 11 ⇒ (1)

∴ a(-4) + b(2) = -16 ⇒ (2)

∴ a(0) + b(-3) = 6 ⇒ (3)

Use equation (3) to find the value of b

∵ a(0) + b(-3) = 6

∴ 0 - 3b = 6

∴ -3b = 6

- Divide both sides by -3

∴ b = -2

Substitute b in equation (1) or equation (2) to find a

∵ a(5) + b(-2) = 11

∴ 5a - 2b = 11

∵ b = 2

∴ 5a - 2(2) = 11

∴ 5a - 4 = 11

- Add 4 to both sides

∴ 5a = 15

- Divide both sides by 5

∴ a = 3

To check your answer substitute a and b in equation (2)

∵ a(-4) + b(2) = -16

∴ -4a + 2b = -16

∵ a = 3 , b = -2

∵ The left hand side is -4a + 2b = -4(3) + 2(-2) = -12 - 4 = -16

∵ The right hand side is -16

∴ L.H.S = R.H.S

∴ The values of a and b are 3 , -2

The values of a and b are a = 3 , b = -2

Learn more:

You can learn more about the equations in brainly.com/question/11306893

#LearnwithBrainly

8 0
3 years ago
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