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fiasKO [112]
3 years ago
13

Find x in this proportion. 5/2x = 25/4 x=

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
5 0
5/2 is the answer.


Have a nive day!
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Can someone please tell me the correct answer.|-30| + |25| =
Mkey [24]

Answer:

55

Step-by-step explanation:

The absolute value of -30 is 30 and the absolute value of 25 is 25.

So you will end up with 30 + 25 which is 55.

7 0
3 years ago
To assess the precision of a laboratory scale, we measure a block known to have a mass of 1 gram. we measure the block n times a
vlada-n [284]
<span>n = 5 The formula for the confidence interval (CI) is CI = m ± z*d/sqrt(n) where CI = confidence interval m = mean z = z value in standard normal table for desired confidence n = number of samples Since we want a 95% confidence interval, we need to divide that in half to get 95/2 = 47.5 Looking up 0.475 in a standard normal table gives us a z value of 1.96 Since we want the margin of error to be ± 0.0001, we want the expression ± z*d/sqrt(n) to also be ± 0.0001. And to simplify things, we can omit the ± and use the formula 0.0001 = z*d/sqrt(n) Substitute the value z that we looked up, and get 0.0001 = 1.96*d/sqrt(n) Substitute the standard deviation that we were given and 0.0001 = 1.96*0.001/sqrt(n) 0.0001 = 0.00196/sqrt(n) Solve for n 0.0001*sqrt(n) = 0.00196 sqrt(n) = 19.6 n = 4.427188724 Since you can't have a fractional value for n, then n should be at least 5 for a 95% confidence interval that the measured mean is within 0.0001 grams of the correct mass.</span>
8 0
3 years ago
3/1/2+1/5/6÷1/3/5 <br>hello good afternoon can u please solve this question​
Likurg_2 [28]

Answer:

1/2

Step-by-step explanation:

See the steps below:)

7 0
3 years ago
A hospital parking lot charges $2.50 for the first hour or part thereof, and $1.25 for each additional hour or part thereof. A w
stepan [7]
12 times is the answer
3 0
3 years ago
12.) A rectangular garden bas a perimeter of 50 feet. The width of the garden is 7 feet. What is the area of the garden? 50 feet
amid [387]
U need to find the length
7 + 7 + 18 + 18 = 50
width is 7 and length is 18
area is length x width
18 x 7 = 126 ft^2
6 0
2 years ago
Read 2 more answers
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