3 years ago

What is 4.3 x 10 is it 43 yes or no

Mathematics

2 answers:

VARVARA [1.3K]3 years ago

6 0

Answer:

yes that is correct

Step-by-step explanation:

natka813 [3]3 years ago

3 0

The answers is correct yes

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Which equation is linear? a xy = 60 b y + 1 = x c 3x – 2y = 5

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equation B is linear. A linear equation will not contain exponents.

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Use a half-angle identity to find the exact value of tan 22.5°.

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Answer:

$\sqrt{2} -1$

Step-by-step explanation:

22.5 degrees is half of 45 degrees (special angle for which we know exactly the value of all three basic trigonometric functions (sine, cosine, and tangent).

So we start recalling the formula for tangent of a half angle: $tan(\frac{\alpha }{2} )= \frac{1-cos(\alpha) }{sin(\alpha) }$

We need just the values of:

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and of

$cos(\alpha )=cos(45^o)=\frac{\sqrt{2} }{2}$

to answer the question. Then, we use those values in the original formula for tangent of a half angle:

$tan(\frac{\alpha }{2} )= \frac{1-cos(\alpha) }{sin(\alpha) }\\tan(22.5^o)=\frac{1-\frac{\sqrt{2} }{2} }{\frac{\sqrt{2} }{2}} =\frac{2-\sqrt{2} }{\sqrt{2} } =\frac{2\sqrt{2}-2 }{2} =\sqrt{2} -1$

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3 years ago

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Together, teammates Pedro and Ricky got 2682 base hits last season. Pedro had 280 more hits than

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Answer:

Ricky had 1201 hits and

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Step-by-step explanation:

Let Ricky be 'y'.

Since, Pedro hit 280 mroe than Ricky.

Pedro is 'y+ 280'

Thus,

y + y+ 280 = 2682

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Ricky had 1201 hits and

Pedro hade 1201 + 280 = 1481 hits

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2 years ago

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