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ioda
3 years ago
12

Yoko paid $10.70 for stamps. She bought three times as many

Mathematics
2 answers:
snow_lady [41]3 years ago
6 0

Answer:

  • 30 of 25 cent, 10 of 14 cent, 60 of 2 cent

Step-by-step explanation:

  • <em>Note: it must be typo 10.70, changed to 10.10</em>

Number of 25 cent stamps = x

Number of 14 cent stamps = y

Number of 2 sent stamps = z

  • Total = $10.10 = 1010 ¢
  • x = 3y
  • z = 2x ⇒ z = 6y

<u>Solving equation</u>

  • 25x + 14y + 2z = 1010
  • 25(3y) + 14y + 12y = 1010
  • 75y + 26y = 1010
  • 101y = 1010
  • y = 1010/101
  • y = 10

<u>The finding x and z</u>

  • x = 3*10 = 30
  • z = 6*10 = 60
koban [17]3 years ago
3 0

punta ka Google then search mo 'yang tanong mo

di'ba Sabi ni'la Alam ni google lahat ka'ya Alam ni google 'yan

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Vadim26 [7]

Answer:

\displaystyle D)  {x}^{5}  +  \rm C

Step-by-step explanation:

we would like to integrate the following Integral:

\displaystyle \int 5 {x}^{4} \, dx

well, to get the constant we can consider the following Integration rule:

\displaystyle \int c{x} ^{n}  \, dx  =  c\int  {x}^{n}  \, dx

therefore,

\displaystyle 5\int  {x}^{4} \, dx

recall exponent integration rule:

\displaystyle \int {x} ^{n}  \, dx  =  \frac{ {x}^{n + 1} }{n + 1}

so let,

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Thus integrate:

\displaystyle  =  5\left( \frac{ {x}^{4+ 1} }{4 +  1}  \right)

simplify addition:

\displaystyle  =  5\left( \frac{ {x}^{5} }{5}  \right)

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our answer is D)

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3 years ago
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Given expression is 0.2(5x – 0.3) – 0.5(–1.1x + 4.2).

To simplify the expression, first multiply the common term within the bracket.

0.2(5x – 0.3) – 0.5(–1.1x + 4.2)

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Combine like terms together.

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