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liubo4ka [24]
2 years ago
12

Please help me with these algebra questions. Image attached.

Mathematics
2 answers:
Vladimir79 [104]2 years ago
3 0

Answer:

a is 5 b is 3 c is 19 for number 5

Vinil7 [7]2 years ago
3 0

Answer:

maybe I can help you

Step-by-step explanation:

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The average of three test scores is 82. The scores on the first test and the third test are the same. The score on the second te
kondaur [170]

Answer:

84

Step-by-step explanation:

Let x = the test

(x + x + ( x - 6))/3=82

((3x - 6)/3) • 3= 82 • 3

3x - 6 + 6 = 246 + 6

<u>3x</u> = <u>252</u>

3        3

x = 84

5 0
2 years ago
A random sample of 85 group leaders, supervisors, and similar personnel revealed that a person spent an average 6.5 years on the
strojnjashka [21]

Answer:

<em>95% of confidence interval for the Population</em>

<em>( 6.1386 , 6.8614)</em>

Step-by-step explanation:

<u><em>Step( i ):-</em></u>

<em>Given random sample size 'n' =85</em>

<em>Mean of the sample size x⁻ = 6.5 years</em>

<em>Standard deviation of Population = 1.7 years</em>

<em>Level of significance = 0.95 or 0.05</em>

<u><em>Step(ii):-</em></u>

<em>95% of confidence interval for the Population is determined by</em>

<em></em>(x^{-} - Z_{0.05} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.05} \frac{S.D}{\sqrt{n} })<em></em>

<em></em>(6.5 - 1.96\frac{1.7}{\sqrt{85} } , 6.5 + 1.96 \frac{1.7}{\sqrt{85} })<em></em>

<em>( 6.5 - 0.3614 , 6.5 + 0.3614 )</em>

<em>( 6.1386 , 6.8614)</em>

<u><em>Conclusion</em></u><em>:-</em>

<em>95% of confidence interval for the Population</em>

<em>( 6.1386 , 6.8614)</em>

8 0
3 years ago
Determine whether the following sequence is geometric. If​ so, find the common ratio.
Debora [2.8K]

The sequence is geometric and the common ratio is 2

7 0
2 years ago
10x+2/2=4x+.25 help please
d1i1m1o1n [39]

Answer:

x= 0.125

Step-by-step explanation:

4 0
2 years ago
What is 1,000 raised to the power of 5?
yan [13]
1,000 ^5 =
1 x 10^15 =
1,000 x 1,000 x 1,000 x 1,000 x 1,000 =
1,000,000,000,000,000  ( one followed by 15 zeros )
4 0
3 years ago
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