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Vika [28.1K]
3 years ago
7

The ratio of tagged fish to untagged fish was 2 to 9. Ninety fish were tagged. How many fish were untagged

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
5 0

Answer:

405

Step-by-step explanation:

Since

2 : 9 = 90 : X

Then we know

9/2 = X/90

Multiplying both sides by 90 cancels on the right

90 × (9/2) = (X/90) × 90

90 × (9/2) = X

Then solving for X

X = 90 × (9/2)

X = 405

Therefore

2 : 9 = 90 : 405

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Kathy stood on the middle rung of a ladder. she climbed up 44 ​rungs, moved down 33 ​rungs, and then climbed up 99 rungs. then s
scoundrel [369]

Solution:

we are given that

Kathy stood on the middle rung of a ladder.

Since she climbed up 44 ​rungs, moved down 33 ​rungs...total up move of 44-33=11 rungs

Then climbed up 99 rungs. so a total of 11+99=110 rungs up.

Then she climbed up the remaining 33 rungs to the top of the ladder so total up move by 110+33=143 rungs

Since Kathy stood on the middle rung of a ladder so number of rungs=143x2=186

Now add the middle rungs.

Total number of rungs in the whole ladder=186+1=187





7 0
3 years ago
What's 15⁄45 written as a fraction in simplest form?
grigory [225]
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4 years ago
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6 0
4 years ago
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-66.14 + 73.53 - 87.15
den301095 [7]

Answer:

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Step-by-step explanation:

Just do -66.14-87.15 then add 73.53

8 0
3 years ago
By increasing the speed of her car  by 5 km/h, Alice was able to drive 12 km in 0.2 hours.  What was her original speed?
Mama L [17]
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