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3 years ago

8

Last month you spent $20 on art supplies. This month you spent 180% of what you spent last month. How much did you spend this mo

nth?

1 answer:

Stolb23 [73]3 years ago

7 0

$20 × 1.8 (180% in decimal form) = 36

$36 is how much you spent the 2nd

Brainliest please!

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Brennan took a total of 16 pages of notes during 8 hours of class. After attending 10 hours of class, how many total pages of no

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We use unitary method over here. To find out the number pages he writes in 1 hour we should;
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3 years ago

There are 158 students registered for American History classes. There are twice as many students registered in second period as

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There are 28 students in first period and 56 students in sceond period and 74 students in third period

<em><u>Solution:</u></em>

Let the number of students in first period be "x"

Let the number of students in second period be "y"

Let the number of students in third period be "z"

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Therefore,

x + y + z = 158 ---------- eqn 1

<em><u>There are twice as many students registered in second period as first period</u></em>

number of students in second period = twice of number of students in first period

y = 2x ------- eqn 2

<em><u>There are 10 less than three times as many students in third period as in first period</u></em>

number of students in third period = 3 times number of students in first period - 10

z = 3x - 10 ------ eqn 3

<em><u>Substitute eqn 2 and eqn 3 in eqn 1</u></em>

x + 2x + 3x - 10 = 158

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<em><u>Substitute x = 28 in eqn 2</u></em>

y = 2(28)

<h3>y = 56</h3>

<em><u>Substitute x = 28 in eqn 3</u></em>

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<h3>z = 74</h3>

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Answer:

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The computation of the length of the bridge in miles is shown below:

Given that

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For 5927.261 yard, the miles would be

= 5927.261 ÷ 1760

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Answer:

There are no solutions for the pair of equations.

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3 years ago

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