2 years ago

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Mathematics

1 answer:

Fed [463]2 years ago

3 0

Doing it for points sorry

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If the ratio of the length to the breadth of a rectangle be 5:3 and its perimeter is 144m find the length of the rectangle

Kamila [148]

Answer:

length=45 m (2 sides = 90m)

Step-by-step explanation:

5x +3x=144

8x=144

x=18 (each of the 8 parts of 144 measure 18m)

5(18) + 3(18)=144

90 +54=144

90/2=45 (1 length side)

54/2=27 (1 width side)

The rectangle= 45+45 +27+27 = 144

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3 years ago

2350 million in standard form

topjm [15]

Answer:

in this problem we have

2,350 million

Remember that

1 million=1,000,000

2,350 million=2,350*1,000,000=2,350,000,000

convert to standard form

2,350,000,000=2.35*10^{9}

therefore

the answer is

2.35*10^{9}

Step-by-step explanation:

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3 years ago

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xxMikexx [17]

69.118 is the correct answer

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2 years ago

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Please help with at least one of these( I accept 1 answer if you have it; make sure you are 100% positive its correct though!)

AlladinOne [14]

Answer:

Step-by-step explanation:

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3 years ago

The function below models the voltage, in volts, of a certain alternating current after x seconds, where A and b are positive co

Katarina [22]

First of all, we can just ignore A, it has no effect but to vertically stretch our cosine.

If it was only $f(x)=cosx$ , the function would be invertible as long as it's confined between $0$ and $\pi$ . Now, the argument of our cosine is not $x$ but $bx$ . It means that it won't stop at $\pi$ , but at $\frac{\pi}{b}$ .

Another way to think about it, "what should i replace x with so I get $\pi$ inside the cosine?"

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3 years ago

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