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photoshop1234 [79]

2 years ago

10

Daniel sees a lighthouse in the harbor. He estimates the angle of elevation is 60°. If the lighthouse is 160 feet tall, what is

the approximate distance between Daniel and the top of the lighthouse? (Assume the lighthouse meets the ground at a right angle.)

1 answer:

AnnyKZ [126]2 years ago

6 0

Answer:

Step-by-step explanation:

If u want to find the distance I think you should divide bit of the numbers

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Given a sample mean difference of 23, a standard error of 4.2, and a critical t value of 2.262, what are the values for the conf

erastova [34]

Answer: (13.4996, 32.5004)

Step-by-step explanation:

The confidence interval for mean difference is given by :-

$(\overline{x}_1-\overline{x}_2)\pm t^*\times SE$ ,

where $(\overline{x}_1-\overline{x}_2)$ = sample mean difference .

$t^*$ = critical t value (two-tailed)

SE= Standard error.

Given : $(\overline{x}_1-\overline{x}_2)=23$

$t^*=2.262$

SE= 4.2

Now, the confidence interval for mean difference will be :-

$23\pm (2.262)\times (4.2)\\\\= 23\pm9.5004\\\\=(23-9.5004,\ 23+9.5004)\\\\=(13.4996,\ 32.5004)$

Hence, the required confidence interval : (13.4996, 32.5004)

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2 years ago

The average of a set of 18 consecutive integers is 22.5.what is the smallest set in the integer

Solnce55 [7]

Answer:

(y+17)÷18=22.5

y+17=22.5×18

y+17=405

y=405-17

y=388

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1 year ago

Solve for x. 1/2x + 3 = 2/3x + 1

makvit [3.9K]

Answer:

x = 12

Step-by-step explanation:

$\frac{1}{2}$ x + 3 = $\frac{2}{3}$ x + 1

multiply through by 6 ( the LCM of 2 and 3 ) to clear the fractions

3x + 18 = 4x + 6 ( subtract 3x from both sides )

18 = x + 6 ( subtract 6 from both sides )

12 = x

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To use energy efficiently, a certain washing machine should wash at least 2 kilograms of clothes. To avoid overloading the machi

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Step-by-step explanation:

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mamaluj [8]

Answer:

49 ÷ 66 × 100= x

Step-by-step explanation:

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1 year ago