You would first write a proportion like this:
15 over 20 = x over 16
Cross multiply 15 times 16 and 20 times x.
15 times 16 = 240. 20 times x = 20x.
Divide both sides by 20.
240/20 = 12
x = 12
The slide tree is 12 feet tall.
Answer:
-7
Step-by-step explanation:
<em>This is a classic algebra problem with 2 equations and 2 unknowns. Let N = #nickles and D=#dimes.
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<em>Then N+D=65 the number of coins he has.
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<em>Also 5N +10D=490 working the amount of money in pennies. Put equation 1 into 2
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<em>5N+10(65-N)=490
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<em>5N+650-10N=490
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<em>-5N=-160
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<em>N=32 and D=33
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<em>To check 32 + 33 = 65
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<em>160 + 330 = 490 (in 1c increments)</em>
Final Answer:
Steps/Reasons:
Question: Simplify
<u>Step 1</u>: Expand by distributing the terms.
×
<u>Step 2</u>: Simplify × to .
~I hope I helped you :)~