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3 years ago

Grade 9 math

Mathematics

1 answer:

stellarik [79]3 years ago

6 0

If you insert 0 in the first formula, that means that they both haven’t worked yet, you have 18x3=54 dollar. This means that they earned money before working and that is not the situation. The second formula is also not true, because if they work for 1 hour, so you insert, you get a negative value, so they lose money.

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If sin(t) = 3/5 and t is in the 2nd quadrant, find cos(t).

NemiM [27]

Cosine is $\frac{hypotenuse}{adjacent}$ .

Apply the equation:

$sin(t) = \frac{3}{5} \\3^2 + b^2 = 5^2\\b^2 = 5^2 - 3^2\\\\\sqrt{b^2} = \sqrt{5^2}- \sqrt{3^2}\\\\\\b = 5 - 3 \\\\b = 2$

B is the adjacent side so

cosine is:

Cos(t) = 5/2

Have a great day,

And I hope this helps you!

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3 years ago

The Lake Smith basketball team had a team picture taken of the players, the coaches, and the trophies from the season. The pictu

UkoKoshka [18]

Answer:

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Step-by-step explanation:

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3 years ago

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A lake has a small patch of lily pads and every day the patch grows to double its size. It takes 32 days for the patch to cover

S_A_V [24]

Answer:

It took 31 days for the patch to cover half the lake

Step-by-step explanation:

The patch grows to double its size everyday

the patch completely covers the lake in 32 days

Since the patch doubles itself everyday, this means that the previous day before the 32nd day, the lake was just half covered.

Therefore, the the patch covered half the lake on the 31st day, i.e it took 31 days for the patch to cover half the lake

6 0

3 years ago

Explain solving Slope

xeze [42]

ratio of vertical change between 2 points

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3 years ago

Plz help i need this done now.

tatuchka [14]

Answer:

infinite solutions

Step-by-step explanation:

4x+4(3x+7) = 8(2x-3) +52

Distribute

4x+12x+28 = 16x-24+52

Combine like terms

16x+28 = 16x +28

Subtract 16x from each side

16x-16x+28 = 16x-16x +28

28=28

This is true, so there are infinite solutions

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3 years ago