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2 years ago

Please help! Question above

Mathematics

2 answers:

notsponge [240]2 years ago

8 0

The answer is the first one

Lina20 [59]2 years ago

8 0

This answer is letter A.

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Student A spent $9 on a bottle of school glue, a package of colored pencils, and a pencil pouch. Student B

tino4ka555 [31]

Answer:

Step-by-step explanation:

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8 0

2 years ago

A tv show is on from 7:00 to 8:00pm.If there are 18 minutes of advertisements during that time,what percent of the show was adve

svetlana [45]

There are 60 minutes in an hour and percent means per one hundred so:

p/100=18/60

p=1800/60

p=30%

3 0

3 years ago

Read 2 more answers

Mike is biking to catch up with his sister who is already 1200 yards ahead of him. If he bikes at a speed of 600 yards per minut

sashaice [31]

Answer:

8 minutes.

Step-by-step explanation:

Let m represent number of minutes.

We have been given that Mike is biking to catch up with his sister who is already 1200 yards ahead of him. His sister is biking at a speed of 450 yards per minute.

So total distance covered by Mike's sister after m minutes would be $450m+1200$ .

Mike bikes at a speed of 600 yards per minute, so total distance covered by Mike in minutes would be $600m$ .

Now, we will equate both expressions to find minutes at which both distances will be equal as:

$600x=450m+1200$

$600x-450m=450m-450m+1200$

$150m=1200$

$\frac{150m}{150}=\frac{1200}{150}$

$m=8$

Therefore, it will take after 8 minutes for Mike to catch his sister.

6 0

3 years ago

Read 2 more answers

Plz help!

vlabodo [156]

Answer:

$76.8

Step-by-step explanation:

As, So 20% of 64 will be the markup price.

So 20/100 x 64 = $12.8

Now Markup price = $12.8

And The retail price = markup price + original price = $12.8 + $64 = $76.8

5 0

3 years ago

a. Write and simplify the integral that gives the arc length of the following curve on the given integral. b If necessary, use t

WINSTONCH [101]

Answer:

\int\limits^{\pi/2} _0 (1+4cos^{2} (2x)dx

Step-by-step explanation:

Arc length is calculated by dividing the arcs in to small segments ds

By pythagoren theorem

$ds^2=dx^2+dy^2$

then integrate ds to get arc length.

We are given a function as

y = sin 2x in the interval [0, pi/2]

To find arc length in the interval

Arc length $s =\int\limits^{\pi/2} _0 {1+y'^2} \, dx \\=\int\limits^{\pi/2} _0 (1+4cos^{2} (2x) )dx$

Hence arc length would be

B) $\int\limits^{\pi/2} _0 (1+4cos^{2} (2x)dx$

6 0

3 years ago