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Ugo [173]
2 years ago
5

Evalute 2d + 3 when d =8 ​

Mathematics
2 answers:
vlada-n [284]2 years ago
5 0

Answer:

2(8)+3

16+3=19

Step-by-step explanation:

In-s [12.5K]2 years ago
4 0

Answer:

19

Step-by-step explanation:

replace the d with 8 and it will be 2 times 8 then you add 3 to the 8

2x8= 16

16+3= 19

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Alika [10]

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8 0
3 years ago
Use the standard norml distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justif
dalvyx [7]

Answer:

E) we will use t- distribution because is un-known,n<30

the confidence interval is (0.0338,0.0392)

Step-by-step explanation:

<u>Step:-1</u>

Given sample size is n = 23<30 mortgage institutions

The mean interest rate 'x' = 0.0365

The standard deviation 'S' = 0.0046

the degree of freedom = n-1 = 23-1=22

99% of confidence intervals t_{0.01} =2.82  (from tabulated value).

The mean value = 0.0365

x±t_{0.01} \frac{S}{\sqrt{n-1} }

0.0365±2.82 \frac{0.0046}{\sqrt{23-1} }

0.0365±2.82 \frac{0.0046}{\sqrt{22} }

0.0365±2.82 \frac{0.0046}{4.690 }

using calculator

0.0365±0.00276

Confidence interval is

(0.0365-0.00276,0.0365+0.00276)

(0.0338,0.0392)

the mean value is lies between in this confidence interval

(0.0338,0.0392).

<u>Answer:-</u>

<u>using t- distribution because is unknown,n<30,and the interest rates are not normally distributed.</u>

4 0
3 years ago
16 is a factor of 24.<br> O A. True<br> O B. False
Alexxx [7]
The answer is b/false I hope this help
5 0
2 years ago
Read 2 more answers
3in x 8in x 5in = ?<br><br> using cubic squares!!
KonstantinChe [14]

Answer:

120

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the solution to this equation?
vampirchik [111]

Steps to solve:

x - 5 = 2

~Add 5 to both sides

x = 7

Best of Luck!

5 0
3 years ago
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