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IRISSAK [1]
2 years ago
10

Marvin has decided to buy some toys to share with some children at the daycare center his sonattends. He buys 4 dolls for d doll

ars each, 12 race cars for r dollars each, and 8 coloring books for cdollars each. If Marvin had 40 dollars to spend, which expressions show how much money Marvin hasafter his purchase
Mathematics
1 answer:
muminat2 years ago
3 0

The expression that show the amount of money that Marvin has after his purchase is 400 - (4d + 12r + 8c)

Amount with Martin = $40

Since he buys 4<em> dolls</em> for d dollars each, 12 <em>race cars</em> for r dollars each, and 8 coloring books for c dollars each, the total value will be:

= (4 × d) + (12 × r) + (8 × c)

= 4d + 12r + 8c

Therefore, the expression that show the amount of money that Marvin has after his purchase will be:

= 400 - (4d + 12r + 8c)

Read related link on:

brainly.com/question/24429956

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Over which interval is the graph of the parent absolute value function f(x) = |xl decreasing?
Romashka [77]

Answer:

(-∞,0)

Step-by-step explanation:

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8 0
3 years ago
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(1/27)^x-6=27<br><br>Could I please have a step by step as well? Much appreciated! ​
Andrei [34K]

Answer:

x = 7

Step-by-step explanation:

1) Use Division Distributive Property: (x/y)^a = x^a/y^a.

\frac{1}{ {27}^{x - 8} }  = 27

2) Multiply both sides by 27^x - 8.

1 =  {27} \times 27^{1 + x  - 8}

3) Use the product rule: x^a x^b = x^a+b.

1 =  {27}^{1 + x - 8}

4) Simplify 1 + x - 8 to x - 7.

1  =  {27}^{x - 7}

5) Use Definition of Common Logarithm: b^a = x if and only if log<u>b</u><u> </u>(x) = a.

log_{27}1 = x - 7

6) Use Change of Base Rule.

\frac{ log_1  }{  log{27} }  = x - 7

7) Use rule of 1: log 1 = 0.

\frac{0}{ log_{27}}  = x - 7

8) Simplify 0/log_27 to 0.

0 = x - 7

9) Add 7 to both sides.

7 = x

10) Switch sides.

x = 7

<u>Therefor</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>x</u><u> </u><u>=</u><u> </u><u>7</u><u>.</u>

5 0
3 years ago
I need help on all of these
lord [1]

well #7 is a solution.

y= 9x (4,36)

9 times 4 = 36

36/9=4

so the ordered pair is a solution.

y=3x-5 (7,16)

3 times 7 -5= 16

so once again the ordered pair is a solution.


Hoped this helped.

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3 years ago
Happy new year, <br> add 2000 + 21 = 2021<br> trying to be fun and creative.
uranmaximum [27]

HAPPY NEW YEAR:)

not only today

always be fun and creative

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2 years ago
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Two less than four times a number is 6
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