2 years ago

Can someone pls answer this? (the dots at the beginning of each sentence is a A,B,C type of thing)

Mathematics

1 answer:

Fofino [41]2 years ago

8 0

Answer: dude take a deep breath and answer the question it’s very easy

Step-by-step explanation:

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Painter A charges $70 to start a job and $80 per hour he/she is there. Painter B charges $100 per hour. Write an inequality that

Debora [2.8K]

Let the number of hours be x.

70 + 80x < 100x

20x > 70

x > 3.5

8 0

2 years ago

Probe that:<br><img src="https://tex.z-dn.net/?f=%20%5Csec%20%5Calpha%20%20%5Csqrt%7B1%20-%20%20%5Csin%28%20%7B%7D%5E%7B2%7D%20%

Nataly [62]

Step-by-step explanation:

<h3> $\sec \alpha \sqrt{1 - \sin ^{2} \alpha } = 1$ </h3>

Prove the LHS

Using trigonometric identities

That's

<h3> $\cos ^{2} \alpha = 1 - \sin^{2} \alpha$ </h3>

<u>Rewrite the expression</u>

We have

<h3> $\sec \alpha \sqrt{ \cos^{2} \alpha }$ </h3>

<h3> $\sqrt{ { \cos }^{2} \alpha } = \cos \alpha$ </h3>

So we have

<h3> $\sec \alpha \times \cos \alpha$ </h3>

Using trigonometric identities

<h3> $\sec \alpha = \frac{1}{ \cos \alpha }$ </h3>

<u>Rewrite the expression</u>

That's

<h3> $\frac{1}{\cos \alpha } \times \cos \alpha$ </h3>

Reduce the expression with cos a

We have the final answer as

As proven

Hope this helps you

7 0

2 years ago

Brian and Mark are fishing. They both catch a fish. Brian's fish weighs 17 pounds less than Mark's fish. Mark's fish weighs 22 p

Fittoniya [83]

Answer:

5 pounds.

Step-by-step explanation:

22 - 17 = 5

6 0

3 years ago

A rectangle has a perimeter of 78 inches. Its length is 6 inches more than<br> twice its width.

Ratling [72]

Answer:

Step-by-step explanation:

ww33

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2 years ago

In a sale Gameboys are reduced by two-fifths what is the sale price if the original price was 50.00

viktelen [127]

The sale price is $30.

I hope this helps. :)

And have a great day. :)

5 0

2 years ago