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2 years ago

The answer please answer

Mathematics

2 answers:

Mariana [72]2 years ago

7 0

Answer:

option c

Step-by-step explanation:

the answer is option a because you are trying to solve _____ - 4 (since for students left early) = 12 (since that is how many students are left)

so, you can reverse the equation, if that makes sense, and make it look like 12+4=_____ (fact families)

12+4=____

12+4=16

stealth61 [152]2 years ago

3 0

So basically . Four plus Twelve equals Sixteen

The answer would be, 16

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uysha [10]

Answer:

Step-by-step explanation:

Q1)

Use Phythogoras theorem:

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Q2)

Apply phythogoras theorem:

$CD^2=CE^2+DE^2\\CD^2=7^2+9^2\\CD^2=49+81\\CD^2=130\\\\Apply\ square\ root\ on\ both\ sides\\\\\\sqrt{CD^2} = \sqrt{130} \\\\CD=\sqrt{130} \\\\CD=11.4$

Q3)

Apply phythogoras theorem again:

$BC^2=BD^2+CD^2\\BC^2=7^2+13^2\\BC^2=49+169\\BC^2=218\\\\Apply\ square\ root\ on\ both\ sides\\\\\\sqrt{BC^2} =\sqrt{218} \\\\BC=\sqrt{218} \\\\BC=14.76$

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3 years ago

Katrina works as an agent for "Let's Go Air". She averages fifteen passengers every twenty minutes. Stefon also works for the ai

Kisachek [45]

The equation computed shows that the number of minutes that it will take to process fifteen passengers is 11.11 minutes.

<h3>How to solve the equation</h3>

Since Katrina averages fifteen passengers every twenty minutes and Stefon also works for the airline and averages fifteen passengers every twenty-five minutes, this can be represented this:

1/x = 1/20 + 1/25

1/x = 9/100

9x = 100

Divide through by 9

x = 100/9

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2 years ago

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Step-by-step explanation:

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