3 years ago

I need help with questions #5 and #6

Mathematics

1 answer:

nekit [7.7K]3 years ago

8 0

6 is A because on of the x values is repeated. I can't read 5 I'm sorry. Could you maybe type what the question is?

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Can someone help me? I know that t=20 I just don't know how to get there

Aneli [31]

2t/5=8t/20 (both numbers multiplied by 4)

t/4=5t/20 (both numbers multiplied by 5)

3=60/20

⇒ 8t/20 - 5t/20= 60/20

3t/20=60/20

⇒3t=60

t=60:3

t=20

I hope you understand !

7 0

4 years ago

If sin(theta) =4/5 and is in quadrant 2, the value of cot(theta

iren [92.7K]

$\sin\theta= \frac{4}{5} 
\\
\\\sin^2\theta+\cos^2\theta=1
\\ \cos\theta=\pm \sqrt{1-\sin^2\theta} =\pm \sqrt{1-( \frac{4}{5})^2 } =\pm \sqrt{1- \frac{16}{25} } =\pm \sqrt{\frac{9}{25} }=\pm \frac{3}{5}}$

$\theta \in II \Rightarrow \cos\theta\ \textless \ 0 \Rightarrow \cos\theta=-\frac{3}{5}$

$\cot\theta= \frac{\cos\theta}{\sin\theta}= \frac{-\frac{3}{5}}{\frac{4}{5}} =- \frac{3}{4}$

5 0

3 years ago

“Use the rule 5n - 2 to complete the missing entry labeled A and B in the input-output table below”

Shtirlitz [24]

Step-by-step explanation:

5n-2

5(4) - 2

20-2=18

A= 18

5n - 2 =48

5n=48+2

5n=50

divide by 5

n= 10

B=10

7 0

3 years ago

A tree in Michael's yard has 120 leaves and loses an average of 4.5 leaves each day. A tree in Heather‘s yard has 45 leaves and

kaheart [24]

Answer:

60 days

Step-by-step explanation:

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3 years ago

I need help with #6<br>.

Vitek1552 [10]

Answer:

5.wy

6.?

7.?

Step-by-step explanation:

sorry i dont have that book

maybe too the other

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2 years ago