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Flura [38]
4 years ago
6

HELP I HAVE ONLINE CLASS QUESTIONS DUE TODAY

Mathematics
1 answer:
amm18124 years ago
8 0

Note: I didn't solve all of them, but hopefully this still helps.

4.

   h*b = b*h because of the commutative property. for example if h= 3 and b = 5, 5*3 = 15 = 3*5

2.

   a) 2x + 20

   b) 5x + 5

   c) 10x + 20

   d) 72 + 36y

   e) 64 + 72

   f) 35y + 30

5.

   a) 10x + 10y + 10

   b) 12x + 20y + 4

   c) 56x + 24y + 16

Goodluck with your schoolwork/homework!

---------------------------------------------------------------

Apologies in advance for any errors or bad explanations.

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Is your expression.

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The average allowsnce money of Ernest jack David and mike is 123 per month per person. The average allowance of Ernest jack and
Evgesh-ka [11]

Answer:

Ernest gets 194 monthly allowance

Step-by-step explanation:

* Lets revise the rule of the average

- Average = The sum ÷ the total number

- Assume that the allowances money of Ernest, Jack, David and Mike

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∵ The average allowance money of Ernest jack David and mike is

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∴ 123 = (E + J + D + M) ÷ 4

- Multiply both sides by 4

∴ E + J + D + M = 492 ⇒ (1)

∵ The average allowance of Ernest jack and David is 159 per month

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- Subtract equation(2) from equation (1) to find M

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* <em>Mike's monthly allowance is 15</em>

∵ David's monthly allowance is 2 less than mikes

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∴ <em>David's monthly allowance is 13</em>

∵ Mikes monthly allowance is 1/18 of jacks

∴ M = \frac{1}{18} × J

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- Multiply both sides by 18

∴ J = 270

* <em>Jack's monthly allowance is 270</em>

- Substitute the values of D , J in equation (2) to find E

∵ D = 13 and J = 270

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∴ E + 270 + 13 = 477

∴ E + 283 = 477

- Subtract 283 from both sides

∴ E = 194

* <em>Ernest's monthly allowance is 194</em>

*<em> Ernest gets 194 monthly allowance</em>

4 0
3 years ago
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2 - √x = 0
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