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s344n2d4d5 [400]
3 years ago
10

Barney and Joan sold birdhouses at a yard sale. They sold the large birdhouses for $12.00 each and the small birdhouses for $8.7

5 each. On Friday they sold 87 birdhouses and made $845.75. How many large and small birdhouses did they sell?
Mathematics
1 answer:
LekaFEV [45]3 years ago
5 0

the answer is 26 large and 61 small

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Option D is the correct option.

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Find the unit vector in the direction of u = (-3,2).
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\bf \textit{and now let's \underline{rationalize} the denominator for each}&#10;\\\\\\&#10;-\cfrac{3}{\sqrt{13}}\cdot \cfrac{\sqrt{13}}{\sqrt{13}}\implies -\cfrac{3\sqrt{13}}{13} \qquad \qquad \qquad \qquad  \cfrac{2}{\sqrt{13}}\cdot \cfrac{\sqrt{13}}{\sqrt{13}}\implies \cfrac{2\sqrt{13}}{13}&#10;\\\\\\&#10;\textit{and written in \underline{ai+bj form}}\qquad -\cfrac{3\sqrt{13}}{13}i~~~~+~~~~\cfrac{2\sqrt{13}}{13}j
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3 years ago
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(g + a)2<br> g = -5 and a = 25 <br> Evaluate expression:
agasfer [191]
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5 0
3 years ago
Read 2 more answers
William is 3 years, older than Charmine. The sum of 3 times Charmaine's age and 2 times William's age is 76. How old are William
lana66690 [7]

William is 17 years old and Charmaine is 14 years old.

Step-by-step explanation:

Let x be the age of William and y be the age of Charmaine

Then

William is 3 years, older than Charmine.

x = y+3    Eqn 1

The sum of 3 times Charmaine's age and 2 times William's age is 76.

2x+3y = 76     Eqn 2

Putting x = y+3 in Eqn 2

2(y+3)+3y=76\\2y+6+3y=76\\5y+6=76\\Subtracting\ 6\ from\ both\ sides\\5y+6-6=76-6\\5y=70\\Dividing\ both\ sides\ by\ 5\\\frac{5y}{5} = \frac{70}{5}\\y=14\\Putting\ the\ value\ of\ y\ in\ Eqn\ 1\\x=y+3\\x=14+3\\x=17

Hence,

William is 17 years old and Charmaine is 14 years old.

Keywords: Linear equations, Variables

Learn more about linear equations at:

  • brainly.com/question/899976
  • brainly.com/question/884169

#LearnwithBrainly

5 0
3 years ago
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