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Mademuasel [1]
3 years ago
11

5 + 5x2 – 2x = 3x2 - 4 What is the answer to this question?

Mathematics
1 answer:
EastWind [94]3 years ago
8 0

Answer:

Step-by-step explanation:

5 + 5x^{2} - 2x = 3x^{2} - 4

use your algebra skillz  :P  to move terms back and forth across the equal sign

5x^{2} - 3x^{2}  - 2x + 5 +4 = 0

2x^{2} -2x +9 = 0

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Suppose you work in the quality assurance department of a chemical processing plant and it is your responsibility to ascertain w
aleksandrvk [35]

Answer:

48.668 ≤ μ ≤ 63.332

Step-by-step explanation:

Given the data:

Sample (X) : 71, 45, 54, 75, 50, 49, 63, 55, 48, 50

Number of samples (n) = 10

α = 95% = 0.05

Determine the range within which the true mean of the fluid samples from the day shift will be with a 95% confidence

True mean = μ

Confidence interval :

m ± t(α/2 ; df) * s/√n

m - t(α/2 ; df) * s/√n ≤ μ ≤ m + t(α/2 ; df) * s/√n

m = sample mean ; s = sample standard deviation ; df = degree of freedom =(n - 1) = (10 - 1) = 9

Calculating the sample mean and standard deviation using calculator to save computation time :

71, 45, 54, 75, 50, 49, 63, 55, 48, 50

m = 56 ; s = 10.25

m - t(0.05/2 ; 9) * s/√n ≤ μ ≤ m + t(0.05/2 ; df) * s/√n

From t table : t(0.05/2 ; 9) = t(0.025, 9) = 2.262

56-2.262 * (10.25/√10) ≤ μ ≤ 56+2.262 * (10.25/√10)

48.668 ≤ μ ≤ 63.332

6 0
3 years ago
Need help fast will give brainliest!!!!!
Fofino [41]

Answer:

C and E i think

Step-by-step explanation:

7 0
3 years ago
Which measure is less than 435 inches?
Alex_Xolod [135]
435 inches = 36 1/4 ft.

So, the answer would be D) 12 ft. 3 in.

*Hope I helped :)*

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Sandy has 28 pencils and 72 erasers. She wants to make the greatest number of bags that have the same number of pencils and eras
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Answer:

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Step-by-step explanation:

find all the factors each numbers are divisible by:

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72 => 1, 2, 3, 4, 8, 9, 18, 24, 36, 72

choose the maximum common denominator.

7 0
3 years ago
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The diameter of a small gear is 16 cm. This is a 2.5 cm more than 1/4 of the diameter of a large gear. What is the diameter of t
eimsori [14]
The large gear has a diameter of 54 CM.
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3 years ago
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