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erastova [34]
3 years ago
14

PLEASE HELP QUICK 3t-2=-11

Mathematics
2 answers:
valentina_108 [34]3 years ago
5 0
-3
step by step
add 2 to -11 and divide-9 by 3
Alex Ar [27]3 years ago
3 0

Answer:

-3

Step-by-step explanation:

-11 plus 2 equals -9 then you divide -9 by 3 to get -3. :)

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What is answer to 16=5x-9
Archy [21]

16=5x-9
+9. +9
25=5x
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7 0
3 years ago
Read 2 more answers
A computer store buys a computer system at a cost of $465.60. The selling price was first at $776, but then the store advertised
Diano4ka-milaya [45]

Answer: a: 543.2 b: 465.6

Step-by-step explanation:

a. find 30% of $776, which is 232.8. subtract 232.8 from 776.

b. find 40% of $776, which is 310.4. subtract 310.4 from 776

3 0
3 years ago
The mean annual tuition and fees for a sample of 15 private colleges was with a standard deviation of . A dotplot shows that it
Fudgin [204]

Answer:

Step-by-step explanation:

The question is incomplete. The complete question is:

The mean annual tuition and fees for a sample of 15 private colleges was $35,500 with a standard deviation of $6500. A dotplot shows that it is reasonable to assume that the population is approximately normal. You wish to test whether the mean tuition and fees for private colleges is different from $32,500. State the null and alternate hypotheses. A) H0: 4 = 32,500, H:4=35,500 C) H: 4 = 35,500, H7:35,500 B) H: 4 = 32,500, H : 4 # 32,500 D) H0:41 # 32,500, H : 4 = 32,500

Solution

We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean

For the null hypothesis,

H0: µ = 32500

For the alternative hypothesis,

Ha: µ ≠ 32500

This is a two tailed test.

Since the number of samples is small and the population standard deviation is not given, the distribution is a student's t.

Since n = 15,

Degrees of freedom, df = n - 1 = 15 - 1 = 14

t = (x - µ)/(s/√n)

Where

x = sample mean = 35500

µ = population mean = 32500

s = samples standard deviation = 6500

t = (35500 - 32500)/(6500/√15) = 1.79

We would determine the p value using the t test calculator. It becomes

p = 0.095

Assuming alpha = 0.05

Since alpha, 0.05 < than the p value, 0.095, then we would fail to reject the null hypothesis.

7 0
3 years ago
HELP PLEASE THANK U
Solnce55 [7]
This is just my guess but I want to say no they are not similar because the first 10 + 5 = 15
8 + 5 = 13 not 12
To make it similar, 8 needs to be 7. This is ONLY my guess, I’m not 100% confident in my answer
5 0
3 years ago
If 2 inches are equivalent to 5 centimeters, how many square centimeters are in one square inch
Sonja [21]

Answer:

there are 6.45 or 6.5 square cm in one square inch

Step-by-step explanation:

6 0
2 years ago
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