3 years ago

Please help me with this math problem I cannot figure it out

Mathematics

1 answer:

expeople1 [14]3 years ago

5 0

Answer: slope is 1/3

Explanation: you can use the slope formula to find the answer m= y2-y1 / x2-x1

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42.5% of what is 20.57

babunello [35]

42.5% of what = 20.57

<span>42.5% of x = 20.57
</span>
(42.5/100)*x = 20.57

42.5x / 100 = 20.57

x = 20.57 * 100 / 42.5

x = 48.4

Therefore 42.5% of 48.4 is 20.57.

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3 years ago

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antiseptic1488 [7]

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3 years ago

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Show that (a-b)/(√a-√b)=√a+√b for all values of a and b such that a> 0 and b> 0 and a≠b.

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Step-by-step explanation:

$\frac{a-b}{\sqrt{a} -\sqrt{b}} =\sqrt{a} +\sqrt{b}\\or ~a-b=(\sqrt{a} +\sqrt{b})(\sqrt{a} -\sqrt{b} )=(\sqrt{a} )^2-(\sqrt{b} )^2 =a-b$

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: Cho tam giác ABC vuông tại C, trong đó AC = 0,9m, BC = 1,2m. Tính các tỉ số lượng giác của góc B, từ đó suy ra các tỉ số lượng

Xelga [282]

Answer:

Step-by-step explanation:

Vì tam giác ABC vuông tại C nên ta áp dụng định lí pitago=> AB²=AC²+BC²=0.9²+1.5²=3.06=>AB= (3 căn bậc hai của 34)/10

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tan B= AC/BC

cot B= BC/AC

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