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3 years ago

Write 430 _minutes after __thrity

Mathematics

2 answers:

Luda [366]3 years ago

7 0

It can be anyways..400 minutes after 30 or 30 minutes after 400

vaieri [72.5K]3 years ago

5 0

Four Hundred Minutes after 30

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Cos s=-2/5 and sin t=4/5, s and t are in quadrant II<br> find cos(s+t) and cos(s-t)

mojhsa [17]

Answer:

•cos(s+t) = cos(s)cos(t) - sin(s)sin(t) = (-⅖).(-⅗) - (√21 /5).(⅘) = +6/25 - 4√21 /25 = (6-4√21)/25

•cos(s-t) = cos(s)cos(t) + sin(s)sin(t) = (-⅖).(-⅗) + (√21 /5).(⅘) = +6/25 + 4√21 /25 = (6+4√21)/25

cos(t) = ±√(1 - sin²(t)) → -√(1 - sin²(t)) = -√(1 - (⅘)²) = -⅗

sin(s) = ±√(1 - cos²(s)) → +√(1- cos²(s)) = +√(1 - (-⅖)²) = √21 /5

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2 years ago

11/6 + -2/5 +-13/10?

Goshia [24]

Answer:

<h2><u><em>Step-by-step explan</em></u>ation:</h2>

11/6 + -2/5 +-13/10?

11/6 + (-2/5) + (-13/10)

43/30 - 13/10

2/15

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1 year ago

Fwee points also can somebody please answer my last 2 question pwease ♡

ladessa [460]

Why thank u very much

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2 years ago

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How can i easily subtract and add a fraction?

gulaghasi [49]

Line the decimals up and add like you normally would.But don't forget to put your decimal in your answer

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3 years ago

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Which sequence of similar transformations could map △ABC onto △A'B'C'?

nadya68 [22]

Answer: A sequence of similar transformations of dilation and translation could map △ABC onto △A'B'C'.

Step-by-step explanation:

Similar transformations: If one figure can be mapped onto the other figure using a dilation and a congruent rigid transformation or a rigid transformation followed by dilation then the two figures are said to be similar.

In the attachment △ABC mapped onto △A'B'C' by a sequence of dilation from origin and scalar factor k followed by translation.

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2 years ago

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Write 430 ___minutes after ____thrity

Write 430 _minutes after __thrity