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m_a_m_a [10]
3 years ago
12

In a fish tank, there are 24 goldfish, 2 angel fish, and 5 guppies. If a fish is selected at random, find the probability that i

t is a goldfish or an angel fish.
Blank 1
Mathematics
1 answer:
horrorfan [7]3 years ago
3 0
There are 31 fish in total. There are 26 goldfish and angelfish. The probability is 26/31.
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Using what you have learned about solving systems of equations, find the number that represents the apple, banana, and cherry.
erica [24]

it would be convenient if you actually give us the equation

8 0
3 years ago
Your sister is getting married this summer and she has asked you to help her select a D.J.
ioda
So Dave charges 150 at first and then 10.50 per each hour, so if your sister has the party going for say "h" hours, then his total charges will then be 150 + 10.5h.

now, Marvin's Mobile Music charges 135 at first, but then is more expensive per hour is 15 bucks per each hour, so if she has a party for "h" hours, then his total charges are 135 + 15h.

now, let's check when they're both equal, at how many hours will they cost your sister the same amount.

\bf 150+10.50h=135+15h\implies 150-135=15h-10.5h
\\\\\\
15=4.5h\implies 15=4\frac{1}{2}h\implies 15=\cfrac{9}{2}h\implies \cfrac{15}{\frac{9}{2}}=h\implies \cfrac{\frac{15}{1}}{\frac{9}{2}}=h
\\\\\\
\cfrac{15}{1}\cdot \cfrac{2}{9}=h\implies \cfrac{30}{9}=h\implies \cfrac{10}{3}=h\implies 3\frac{1}{3}=h

so, 3 and a third of a hour, or 3 hours and 20 minutes, they both will cost your sister the same amount, so it wouldn't matter who's hired if the party is only 3 hours and 20 minutes long.

however, after that, the one with higher hourly rate, Marvin's, gets more expensive, and she's better off hiring the one with cheaper hourly rate.

now, you can just get some mp3s and some loud speakers and nevermind the  DJs and you do it, or she can do it, I have the macarena song if you need that one.
3 0
4 years ago
Jon Kent's parents subtracted $3,500 from their adjusted gross income when they listed him as an exemption on their tax return .
NeX [460]

Answer: 3,917

Step-by-step explanation:

3 0
3 years ago
Jenna manipulated the equation 4x + 7=10 by adding -7 to both sides.Which of the follolwing properties justifies this manipulati
elena-14-01-66 [18.8K]
The addition property of equality justifies this. You could also say that she simply subtracted 7, and then it would be the subtraction property of equality. This is the case because if you add or subtract (or multiply or divide) the same number on both sides of an equation, the equation will still be the same.


Hope it helps!
5 0
3 years ago
Using multiplication when multiplied by 9 will give the answer 2385
Evgen [1.6K]
265 is the number when multiplied by 9 will give you 2385.

This can be obtained by dividing 2385 by 9.
3 0
3 years ago
Read 2 more answers
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