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3 years ago

How to simplify this equation 5/4+4(3/4-1/2)

Mathematics

1 answer:

Dovator [93]3 years ago

7 0

Answer:

Exact Form:

9/4

Decimal Form:

2.25

Mixed Number:

2 1/4

Step-by-step explanation:

Make sure you SIMPLIFY. You need to solve the part of the problem that has Parentheses. Then you can move on from there.

(Hope this helps!)

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Answer:

Step-by-step explanation:

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2.) Given $x = 7 sin\theta$

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$\int\limits {7\sqrt{49-x^{2} } } \, dx \\= \int\limits {7\sqrt{7^{2} -x^{2} } } \, dx\\= \int\limits {7\sqrt{7^{2} -(7sin\theta)^{2} } } \, dx\\= \int\limits {7\sqrt{7^{2} -49sin^{2}\theta } } \, dx\\= \int\limits {7\sqrt{49(1-sin^{2}\theta)} } } \, dx\\= \int\limits {7\sqrt{49(cos^{2}\theta)} } } \, dx\\since\ dx = 7cos\theta d\theta\\= \int\limits {7\sqrt{49(cos^{2}\theta)} } } \, 7cos\theta d\theta\\= \int\limits {7\{7(cos\theta)} }}} \, 7cos\theta d\theta\\$

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