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2 years ago

Clear parentheses and combine like terms:

Mathematics

1 answer:

Nuetrik [128]2 years ago

4 0

Answer:

2x - 6y + 16

3rd option

Step-by-step explanation:

Step 1: Write out expression

2(x - 3y + 8)

Step 2: Distribute

2x - 6y + 16

Since there is no other like terms to combine, that is our final answer.

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Use the circumference of 18.84 to find the radius. Use the radius to find the area of the circle.

lora16 [44]

Answer:

9.42

Step-by-step explanation:

The radius is always half of the circumference. So u would do 18.84 divided by 2.

4 0

3 years ago

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

4. Tisha has two bags of marbles like the ones

ki77a [65]

Answer:

0.25

Step-by-step explanation:

Bag 1 :

Number of marbles = 6

Number of Blue marbles = 3

Bag 2:

Number of marbles = 4

Number of Blue marbles = 2

Recall :

Probability = required outcome / Total possible outcomes

For Bag 1:

P(blue) = Number of Blue marbles / total marbles

P(blue) = 3 / 6 = 1/ 2

For Bag 2:

P(blue) = Number of Blue marbles / total marbles

P(blue) = 2 / 4 = 1/ 2

Probability of a picking a blue marble from each bag :

1/2 * 1/2 = 1/4 = 0.25

6 0

3 years ago

7.30 multiples by 4.19

daser333 [38]

Answer: 30.587

Step-by-step explanation:

4 0

3 years ago

Jeannie wants to buy her llama a sweater for $32. It's on sale for 20% off. Sales tax is 6.75%. What is the final cost?

n200080 [17]

Answer: Your total payment: $27.33

How much you saved: $6.83

The tax: $1.73

Step-by-step explanation:

4 0

2 years ago

Clear parentheses and combine like terms:​

Clear parentheses and combine like terms: