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olga_2 [115]
3 years ago
12

5x-19≤1 OR -4x+3 -9/4 D) No solution E) All values of x are solutions

Mathematics
1 answer:
sukhopar [10]3 years ago
6 0

Answer:

i'm not sure let me write down the equation one more time

Step-by-step explanation:

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Find the length of a side of a square whose area is 625 square inches
Schach [20]
156.25 because a square has 4 sides so it would be 625/4 which equals to the answer 156.25
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3 years ago
Show how to solve the following; answer must be with fractions and pi
Bess [88]

Answer:

3pi/4 and -pi/4

Step-by-step explanation:

We can simplify -6/6 to -1.

Therefore, this function can be simplified to arctan(-1).

Recall that the meaning of arctan is to find a value that will get the value inside the parenthesis when taken the tangent of it. In other words, tan(x) = -1.

Recall that tan(x) = sin(x)/cos(x). Now recall that sin(pi/4) and cos(pi/4) are both sqrt(2)/2, meaning that tan(pi/4) is 1. To make it -1, we can either make sin(x) -1 while keeping cos(x) 1, or the other way around.

If x is -pi/4, cos(x) will still be 1, but sin(x) will be -1, so tan(-pi/4) will be -1.

If x is 3pi/4, cos(x) will be -1, but sin(x) will still be 1, so tan(3pi/4) will be -1.

Side note: there are still infinite more answers. You can attain them by adding or subtracting 2pi as many times as you want from 3pi/4 or -pi/4 and still get an arctan of -1.

3 0
3 years ago
How many 1/3 inch cubes does it take to fill a box with width 2 2/3 inches, lengths 3 1/3 inches, and height 2 1/3 inches?
Nataly [62]

Answer:

560 cubes

Step-by-step explanation:

width: 8 cubes

length: 10 cubes

height: 7 cubes

volume: 8*10*7=560

divided l, w, and h by 1/3 to get them in cubes

7 0
3 years ago
Read 2 more answers
A survey found that​ women's heights are normally distributed with mean 63.9 in. and standard deviation 3.6 in. The survey also
stich3 [128]

Answer:

a: 0.1%

b. No it does not

c.  Probably for safety reasons

Step-by-step explanation:

for women: z = (55.9 - 63.9)/3.6 = -2.22

The p-value for z = -2.22 is 0.0132, so only 1.32% of women could walk through without bending

for men: z = (55.9 - 69.7)/3.6 = -3.83

The p-value for z = -3.83 is 0.001, so only 0.1% of men could walk through without bending

4 0
3 years ago
Read 2 more answers
The scores on a standardized test are normally distributed. If a random sample of standardized test scores is taken and the conf
evablogger [386]

Answer: The sample mean (\overline{x}) = 517

Step-by-step explanation:

The confidence interval is given by :-

Sample mean ± Margin of error

Given : The scores on a standardized test are normally distributed. If a random sample of standardized test scores is taken and the confidence interval is (497,537).

i.e. Sample mean - Margin of error = 497  ..(i)

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Adding (1)  and (2), we get

2 (Sample mean) = 1034

⇒Sample mean = 517

Hence, the sample mean (\overline{x}) = 517

7 0
3 years ago
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