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Stells [14]
3 years ago
11

Is 7s+8+5s equal to 12s+8

Mathematics
2 answers:
MatroZZZ [7]3 years ago
7 0
Yes you can combine the 7s and the 5s to get 12s then add the plus 8
Arte-miy333 [17]3 years ago
7 0

Answer:

yes

Step-by-step explanation:

because you have to add

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A random sample of 35 undergraduate students who completed two years of college were asked to take a basic mathematics test. The
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Answer:

The 90 % confidence limits are (-2.09, 8.09).

Since the calculated values do not lie in the critical region we accept our null hypothesis.

Step-by-step explanation:

The null and alternative hypothesis are given by

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Confidence interval for the population mean difference is given by

(x`1- x`2) ± t √S²(1/n1 + 1/n2)

Where S ²= (n1-1)S₁² + S²₂(n2-1)/n1+n2-2

Critical value of t with n1+n2-2= 50+ 35-2= 83 will be -1.633

Now calculating

S ²=34* (12.8)²+ (14.6)²*49/83= 192.96

Now putting the values in the t- test

(75.1 -72.1) ± 1.633 √ 192.96(1/35 +1/50)

=3 ±  5.09

=-2.09, 8.09  is the 90 % confidence interval for the difference

The 90 % confidence limits are (-2.09, 8.09).

Since the calculated values do not lie in the critical region we accept our null hypothesis.

5 0
3 years ago
What is the measure of z?
Lady bird [3.3K]

Answer:

The missing angle is 24 degrees

Step-by-step explanation:

The two angles form a straight line so they add to 180 degrees

x+156 = 180

Subtract 156 from each side

x+156-156 = 180- 156

x = 24

The missing angle is 24 degrees

3 0
2 years ago
If​ Tucson's average rainfall is
S_A_V [24]
You think I know right? yeah so no way boy I'm so sorry not my intencion
4 0
3 years ago
Which of the following is the graph of y = |x - 3|
quester [9]

Answer:

<u>y = | x - 3 | is graphed on the attachment below </u>↓

Step-by-step explanation:

If you ever need an equation graphed, here's a useful site called Desmos that can do that really well and for free.

8 0
2 years ago
Which of the following shows 2 + (x + 3y) rewritten using the Associative Property of Addition?
Paha777 [63]
B (2+x) +3y

Other examples include <span>(14 + 6) + 7 = 14 + (6 + 7)
because </span><span>Adding 14 + 6 easily gives the sum of 20 to which we can add 7. The right hand side of the equation is where we add 14 and 13. Both sides will result in 27.</span>
8 0
3 years ago
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