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4 years ago

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If sin θ = 3 over 7 and tan θ < 0, what is the value of cos θ? negative square root of 10 negative 2 square root of 10 2 squa

re root of 10 over 7 negative 2 square root of 10 over 7

1 answer:

Nookie1986 [14]4 years ago

8 0

Answer:

negative 2 square root of 10 over 7

Step-by-step explanation:

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3 years ago

What reasons can he use as a justification?

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3 years ago

Please solve (a^3 - 2a^2) - (3a^2 - 4a^3).

Wittaler [7]

Hi there! Hopefully this helps!

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<h2>Answer: $5a^{3} - 5a^{2}$ . </h2><h2 /><h2>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</h2><h2 />

| $(a^{3} - 2a^{2}) - (3a^{2} - 4a^{3} )$

|

| To find the opposite of $3a^{2} -4a^{3}$ , find the <em>opposite</em> of each term.

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$a^{3} - 2a^{2} - 3a^{2} + 4a^{3}$

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

|

|Combine $-2a^{2}$ and $-3a^{2}$ to get $-5a^{2}$ .

\/

$a^{3} - 5a^{2} + 4a^{3}$

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

|

|Combine $a^{3}$ and $4a^{3}$ to get $5a^{3}$ .

\/

<h2>Answer: $5a^{3} - 5a^{2}$ </h2>

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3 years ago

Norman bought 5/6 pounds of cookies. He ate 3/5 cookies. What was the weight of the cookies he ate

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Answer:

Step-by-step explanation:

5/6 pounds he ate 3/5 =0.23

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Step-by-step explanation:

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