2 years ago

Can someone help me pls!!

Mathematics

1 answer:

olga nikolaevna [1]2 years ago

4 0

Answer:

x=1

Step-by-step explanation:

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2.43

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3 years ago

Melissa has 350 in her savings account. she decides that she will put the same amount of money each month into her account.Her g

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3 years ago

Using addition formula solve tan 15

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Answer:

2 - $\sqrt{3}$

Step-by-step explanation:

Using the addition formula for tangent

tan(A - B) = $\frac{tanA-tanB}{1+tanAtanB}$ and the exact values

tan45° = 1 , tan60° = $\sqrt{3}$ , then

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tan(60 - 45)°

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Rationalise the denominator by multiplying numerator/ denominator by the conjugate of the denominator.

The conjugate of 1 + $\sqrt{3}$ is 1 - $\sqrt{3}$

= $\frac{(\sqrt{3}-1)(1-\sqrt{3}) }{(1+\sqrt{3})(1-\sqrt{3}) }$ ← expand numerator/denominator using FOIL

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

= $\frac{-4+2\sqrt{3} }{-2}$

= $\frac{-4}{-2}$ + $\frac{2\sqrt{3} }{-2}$

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2 years ago

Write an equation (7,-4) and has a slope of m =-6

Ann [662]

Answer:

Step-by-step explanation:

y + 4 = -6(x - 7)

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3 years ago

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Answer:

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Step-by-step explanation:

II-30I-I-5II=

I30-5I=

I25I=

II-5I-I-30II=

I5-30I=

I-25I=

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2 years ago