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2 years ago

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:

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

3x = 252

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:

95% of confidence interval for the Population

( 6.1386 , 6.8614)

Step-by-step explanation:

Step( i ):-

Given random sample size 'n' =85

Mean of the sample size x⁻ = 6.5 years

Standard deviation of Population = 1.7 years

Level of significance = 0.95 or 0.05

Step(ii):-

95% of confidence interval for the Population is determined by

$(x^{-} - Z_{0.05} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.05} \frac{S.D}{\sqrt{n} })$

$(6.5 - 1.96\frac{1.7}{\sqrt{85} } , 6.5 + 1.96 \frac{1.7}{\sqrt{85} })$

( 6.5 - 0.3614 , 6.5 + 0.3614 )

( 6.1386 , 6.8614)

Conclusion:-

95% of confidence interval for the Population

( 6.1386 , 6.8614)

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