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jok3333 [9.3K]
3 years ago
12

What does x equal in x+4=2x-3

Mathematics
1 answer:
barxatty [35]3 years ago
7 0

Answer:

Step-by-step explanation:

x+4=2x-3

x-3=4

x=7

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A water sprinkler sends water out in a circular pattern. How large is the watered area if the radius of the watering pattern is2
Mamont248 [21]

Answer:

Step-by-step explanation:

Simply put, it is similar to finding the area of a circle.

Therefore, a=pi*r^2

a=pi*23^2

a=529pi

a=1661.9 ft^2

6 0
2 years ago
A Web music store offers two versions of a popular song. The size of the standard version is 2.4 megabytes (MB). The size of the
Margarita [4]

Answer:

880 high-quality version

Step-by-step explanation:

I think the below is your full question:

<em>A Web music store offers two versions of a popular song. The size of the standard version is 2.1megabytes (MB). The size of the high-quality version is 4.5 MB. Yesterday, there were 1290 downloads of the song, for a total download size of 4821 MB. How many downloads of the high-quality version were there?</em>

Here is my answer:

Let x is the number of high-quality version

So the number of standard version= 1290 - x

We also know:  total download size of 4821 MB. which means:

4.5x + 2.1(1290-x) = 4821

<=> 4.5x+2709-2.1x=4821

<=> 2.4x=2112

<=> x=880

So there were 880 high-quality version

5 0
3 years ago
Read 2 more answers
The measure of an angle is 60°. What is the measure of its supplementary angle?
SVEN [57.7K]

Answer:

120

Step-by-step explanation:

supplementary equal up 180

3 0
3 years ago
Solve 4(6k -12) = 3 (8k - 16)
schepotkina [342]

Answer:

i think the answer is 0=0

5 0
2 years ago
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In a survey of sleeping habits, 8400 adults were selected randomly and contacted by telephone. Based on a medical association's
Andreas93 [3]

Answer:

d. None of the above.

Step-by-step explanation:

<em>a. By the law of large numbers, it would again be 46%. </em>

FALSE. This proportion (46%) is a sample statistic, that can or can not be repeated in another sample.

<em>b. By the law of large numbers, the smaller (second) survey will certainly produce a sample proportion farther from the true population proportion than the larger (first) survey. </em>

FALSE. Smaller samples will produce wider confidence intervals for the estimation of the population proportion, but larger samples does not necessarily gives us better point estimations of the true proportion. A small sample can be closer to the true proportion than a large sample, although is less probable.

<em>c. The proportion computed from the sample of 5000 people would be more accurate because smaller samples tend to be more homogeneous than larger samples. </em>

FALSE. There is no evidence to claim that smaller samples are more homogeneous.

<em>d. None of the above.</em> TRUE

6 0
3 years ago
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