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vampirchik [111]
4 years ago
6

Admission to the zoo is $6 for children and $9 for adults. On a certain day, 1480 people go to the zoo and $10,500 is collected.

Mathematics
1 answer:
erik [133]4 years ago
6 0
<span>6x+9y = 10500
x+y = 1480
 
Using elimination I get: 6x + 9y = 10500 -6x-6y = -8880
Add the 2 equations and I get 3y = 1620
Divide both sides by 3 and I get y = 540
 Substitute that back in to 6x+9y = 10500.
 I get that 6x+9*540 = 10500 9 * 540 = 4860
 Subtract 4860 from both sides and I get 6x = 5640
 Divide both sides by 6 and I get x = 940
 So there must have be 940 children and 540 adults</span>
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Answer:

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Step-by-step explanation:

This is the LCM.

15  = 3 * 5

20 = 2 * 2 * 5

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One 5 appears in all 3  factors so we only use this once in the calculation:

LCM = 2 * 2 * 3 * 5* 5 = 300

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Answer:

Option ?) 17 cm, 15 cm, 8 cm

<em>The assignment should have </em><em>four options</em><em> to choose from, but there is only a picture of two. </em>

Step-by-step explanation:

<em>None of the squares </em><em>shown</em><em> form a right triangle. To determine if sides form a right triangle, you use </em><em>this</em><em> formula:</em>

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<em>We are given two options in the picture.</em>

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Option B)

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<em>Both of these options are false.</em><em> But, I decided to look up this assignment to check my answer. It turns out, there are </em><em>4 options</em><em>, and you only had a picture of two. So, what's the answer?</em>

<em />

<em>There is an answer choice that shows 3 squares with the lengths of 17 cm, 15 cm, and 8 cm. </em><em>This is the correct answer</em><em>.</em>

<em />

<em>For proof, let's apply the formula:</em>

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<em>[Since the option isn't shown, I'll put a '?' so there is no confusion]</em>

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