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alexandr402 [8]

3 years ago

10

It took 7.2 minutes to upload 8 digital photographs from your computer to a website. At this rate, how long will it take to uplo

ad 20 photographs? How do I set this problem up?

1 answer:

JulijaS [17]3 years ago

4 0

72wmp and you have to substitute

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Which is a completw sentence?

cestrela7 [59]

D. would be the right answer mate

6 0

3 years ago

the cat is a high speed catamaran auto ferry that operates between City A and City B. The cat can make the trip in 1 1/2 hours a

malfutka [58]

City A and City B are about 76.5 miles apart because 51*1.5 = 76.5

3 0

2 years ago

When I solved this equation I got x=0.5

qwelly [4]

You might have made an error the first time you solved for x. I got x = -0.5.

When you have your log base 4, the way you cancel that out is by making 4 the base on both sides, so you get 4^(log4) to reduce to 1, and you're left with:

2x + 3 = 4^(1/2) ... Simplify

2x + 3 = 2

2x = -1

x = -1/2

If you plug that back in, everything checks out. Maybe double check your use of logarithm/exponent properties?

4 0

2 years ago

(3.2 x 10^14) (5.1 x 10^2) in scientific notation

tresset_1 [31]

Those expressions are already in scientific notation.

6 0

3 years ago

A Web music store offers two versions of a popular song. The size of the standard version is 2.8 megabytes (MB). The size of the

Serga [27]

Answer:

Number of high quality version downloads = 880

Step-by-step explanation:

Let,

x be the number of standard version songs downloaded

y be the number of high quality version songs downloaded

According to given statement,

x+y=1600 Eqn 1

2.8x+4.1y=5624 Eqn 2

Multiplying Eqn 1 by 2.8 to eliminate x

2.8(x+y=1600)

2.8x+2.8y=4480 Eqn 3

Subtracting Eqn 3 from Eqn 2

(2.8x+4.1y)-(2.8x+2.8y)=5624-4480

2.8x+4.1y-2.8x-2.8y=1144

1.3y=1144

Dividing both sides by 1.3

$\frac{1.3y}{1.3}=\frac{1144}{1.3}\\y=880$

Hence,

Number of high quality version downloads = 880

3 0

3 years ago