4 years ago

PleaseI really need help on this please

Mathematics

2 answers:

Karo-lina-s [1.5K]4 years ago

4 0

Answer:

Step-by-step explanation:

mamaluj [8]4 years ago

3 0

Answer:

Step-by-step explanation:

the anwser to number 7 is d or (x2-4) (x2+4)

by the way try using the app called Photo Math i use it for my test it works greatyou should try it some day.

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nignag [31]

Answer:

(3, 5)

Step-by-step explanation:

It would be (3, 5) because since Juans house is in the same quadrant as the school there wouldn't be any negative numbers in the coordinates. The only coordinate that doesn't have negative numbers is (3, 5). That's your answer.

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2 years ago

Plzz help <br><br>find value of following : 2sin75°.cos15°

polet [3.4K]

Answer:

$\frac{2+\sqrt{3} }{2}$

Step-by-step explanation:

Using the product to sum formula

sinxcosy = $\frac{1}{2}$ [ sin(x + y) + sin(x - y) ] , then

2sinxcosy = sin(x + y) + sin(x - y)

Given

2sin75°cos15° ← with x = 75 and y = 15 , then

= sin(75 + 15) + sin(75 - 15)

= sin90° + sin60°

= 1 + $\frac{\sqrt{3} }{2}$

= $\frac{2+\sqrt{3} }{2}$

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