3 years ago

In the triangle below,

Mathematics

1 answer:

defon3 years ago

3 0

Answer: y ≈ 10.6 cm

Step-by-step explanation:

The cosine function relates the adjacent side to the hypotenuse in a right triangle. The side adjacent to the 20° angle is 10 cm.

cos(20°) = (10 cm)/y

y = (10 cm)/cos(20°)

y ≈ 10.6 cm

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Andre has a summer job selling magazine subscriptions. He earns $25 each week plus $3 for every subscription he sells. Andre hop

Strike441 [17]

Answer: 25 + 3n

Step-by-step explanation:

Hi, the answer is lacking the last part:

<em>Write an expression for the amount of money he makes this week. </em>

So, to answer this we have to write an expression:

The fixed amount that he earns per week (25) plus the product of the amount he earns per subscription (3) and the number of subscriptions sold (n) , must be equal to his weekly earnings.

Mathematically speaking:

25 + 3n

Feel free to ask for more if needed or if you did not understand something.

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natali 33 [55]

Answer:

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Step-by-step explanation:

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Bess [88]

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3 years ago

PLEASE HELP What is the radical form of the expression 423 ? 43−−√ 34−−√ 42−−√3 24−−√3

ira [324]

For this case we must express the number "423" in a radical way.

We have to, we can rewrite it as:

$423 = 9 * 47 = 3 ^ 2 * 47$

So, we have to:

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By definition of properties of powers and roots we have:

$\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}$

So:

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3 years ago

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LekaFEV [45]

Answer:

$\boxed{ \bold{ \boxed {\huge{ \sf{ {x}^{2} + 7x}}}}}$

Step-by-step explanation:

$\sf{x(x + 7)}$

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$\dashrightarrow{ \boxed{ \sf{ {x}^{2} + 7x}}}$

Hope I helped!

Best regards! :D

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3 years ago