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Musya8 [376]
3 years ago
12

Please help!

Mathematics
1 answer:
dedylja [7]3 years ago
7 0
This may help :))

She worked 9 hours on store and gave piano lessons for 6 hours


Let x be the no. of hours she worked on store
Cost of 1 hour on shop = $8.47
Cost of x hours on shop = $8.47x
Let y be the no. of hours she gave piano lessons
Cost of 1 hour for piano lessons = $17
Cost of y hours on shop = $17y
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Answer:

i think is D

Step-by-step explanation:

because 2×7=21

3×21=63

and the parent still going

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Which expression is equivalent to (-4y-x)-(y-9x) ?
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Answer:

-5y + 8x

Step-by-step explanation:

(-4y-x)-(y-9x)\\\\-4y-x-(y-9x)\\\\\rightarrow-(y-9x)*-1=-y+9x\\\\-4y-x-y+9x\\\\-4y-y+9x-x\\\\\boxed{-5y+8x}

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Amanda uses the equation y = kx to determine how much money (y) she earns after working any number of hours (x). Amanda earned $
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Suppose that a student has $150 in a band savings account at the start of the school year. Calculate the change in that savings
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8 0
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Question 2(Multiple Choice Worth 1 points)
Tomtit [17]

The sequence is " Algebraic, common difference = −10 " ⇒ 1st answer

Step-by-step explanation:

Let us revise the algebraic and geometric sequences

  • The Algebraic sequence is the sequence that has a common difference between each two consecutive terms, like 2 , 5 , 8 , 11 , 14 , .......... the difference between the 5 and 2 is equal to the difference between 8 and 5, and the difference between 11 and 8 and the difference between 14 and 11
  • The geometric sequences is the sequence that has a common ratio between each two consecutive terms, like 3 , -9 , 27 , -81 , ...... the ratio between -9 and 3 as the ratio between 27 and -9 as the ratio between -81 and 27

→  x   :    1    :    2    :    3    :    4

→ f(x) :    5   :   -5    :    -15  :    -25

x represents the positions of the terms

f(x) represents the value of each term

∵ 1st = 5 and 2nd = -5

∵ -5 - 5 = -10

∵ 2nd = -5 and 3rd = -15

∵ -15 - (-5) = -15 + 5 = -10

∵ 3rd = -15 and 4th = -25

∵ -25 - (-15) = -25 + 15 = -10

∴ There is a common difference -10 between each two

   consecutive terms

∴ The sequence is algebraic with common difference -10

The sequence is " Algebraic, common difference = −10 "

Learn more:

You can learn more about the sequences in brainly.com/question/1522572

#LearnwithBrainly

8 0
3 years ago
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