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3 years ago

Alright, Since my previous questions have not been answered, here's 50p to whoever solves this

Mathematics

1 answer:

BigorU [14]3 years ago

6 0

Step-by-step explanation:

We can make 2 equations as follows:

2x = y + 16 and x + 2y = 18

x + 2y = 18 is the same as x = 18 - 2y. Hence, 2(18 - 2y) = 2x = y + 16.

2(18 - 2y) = y + 16

36 - 4y = y + 16

5y = 20

y = 4.

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You are planning on applying to the Knirhsdaeh institute as a psychology counselor. They hire millions of psychologists around t

elena-14-01-66 [18.8K]

Answer:

The 98% of the confidence interval for the true average salary of Knirhsdaeh employees as a psychology counselor

(75.4206, 86.5794)

Step-by-step explanation:

Step(i):-

Given that the mean of the sample = $81 k

Given that the size of the sample 'n' = 23

Given that the standard deviation for the salaries is $13 k

Step(ii):-

98% of the confidence interval for the true average salary of Knirhsdaeh employees is determined by

 $(x^{-} - t_{0.02} \frac{S.D}{\sqrt{n} } , x^{-} + t_{0.02} \frac{S.D}{\sqrt{n} })$ 

Degrees of freedom = n-1 = 23-1 =22

 $t_{0.02} = 2.5083$ 

$(81 - 2.0583 \frac{13}{\sqrt{23} } , 81 + 2.0583 \frac{13}{\sqrt{23} } )$

( 81 - 5.57940 , 81 + 5.57940)

(75.4206, 86.5794)

Final answer:-

The 98% of the confidence interval for the true average salary of Knirhsdaeh employees as a psychology counselor

(75.4206, 86.5794)

7 0

3 years ago

11. Twenty-four students in Jamal's class are wearing tennis shoes. There are

RUDIKE [14]

Answer: Incorrect.

Step-by-step explanation: 24 out of 30 is 80.00%.

Step 1: We make the assumption that 30 is 100 % since it is our output value.

Step 2: We next represent the value we seek with x.

Step 3: From step 1, it follows that 100 % = 30.

Step 4: In the same vein, x % = 24 .

Step 5: This gives us a pair of simple equations:

100 % = 30(1).

x % = 24(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); we have

100 % / x % = 30/24

Step 7: Taking the inverse (or reciprocal) of both sides yields

x/100 = 24/30

x = 80 %

3 0

1 year ago

Read 2 more answers

What are the 3 central beliefs of Christianity

Nookie1986 [14]

Answer:

A. B. and D.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

If you only work .2 of a 6 day work week, how many days and hours would that be.

maria [59]

0.2 of 6 is the same as saying 1/5 of 6.

One fifth of 6 is 1.2 days

Knowing this, we can find the hours by simply multiplying 24 (The amount of hours in 1 day) by 1.2

24 * 1.2 = 28.8 hours or 28 hours and 48 minutes.

8 0

3 years ago

-2a(3a to the power of 4)

ElenaW [278]

The answer would be -6a^5

5 0

3 years ago