The answer is B
100% use photomath
And sub to pewdiepie
Answer:
9x - 5
Step-by-step explanation:
<u>Simplify:</u>
- (4x − 6) + (5x + 1) = ⇒ opening parenthesis
- 4x - 6 + 5x +1 =
- (4x+ 5x) + (1 -6) = ⇒ grouping like terms
- 9x + (- 5) = ⇒ simplifying like terms
- 9x - 5 ⇒ answer
<u>Correct choice:</u> B. 9x -5
Hey there,
Solution:
Fabric needed = 1 3 / 4
Fabric she has = 4 5 / 8
1 3 / 4 - make the denominator into 8
1 3 / 4 = 1 6 / 8
Fabric left = 4 5 / 8 - 1 6 / 8
= 37 / 8 - 14 / 8
= 23 / 8
= 2 7 / 8
Hope this helps :))
<em>~Top♥</em>
Considering that we have the standard deviation for the sample, the t-distribution will be used, and the critical value is t = 2.6682.
<h3>When should the t-distribution and the z-distribution be used?</h3>
- If we have the standard deviation for the sample, the t-distribution should be used.
- If we have the standard deviation for the population, the z-distribution should be used.
In this problem, σ is not known, hence we get the standard deviation of the sample from the histogram and the t-distribution is used.
Using a t-distribution calculator, considering a <em>confidence level of 99%</em> and 56 - 1 = <em>55 df</em>, the critical value is t = 2.6682.
More can be learned about the t-distribution at brainly.com/question/16162795
