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3 years ago

Solve for e. (-7) = e/3 + 14

1 answer:

5 0

(-7) = e/3 + 14

Subtract 14 on both sides

-7 - 14 = e/3 + 14 - 14

-21 = e/3

Multiply by 3 on both sides

-21 * 3 = e/3 * 3

-63 = e

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Which number is between 8.270 and 8.280

Nezavi [6.7K]

Answer:

8.275

Step-by-step explanation:

8.280 - 8.270 = 0.010

0.010/2 = 0.005

8.270 + 0.005 = 8.275

8 0

2 years ago

Help please and thank you!

Usimov [2.4K]

Answer:

Option A

Explanation:

$\rightarrow \sf sin\left(\dfrac{7\pi }{6}\right)$

$\rightarrow \sf \sin \left(\pi +\dfrac{\pi }{6}\right)$

$\rightarrow \sin \left(\pi \right)\cos \left(\dfrac{\pi }{6}\right)+\cos \left(\pi \right)\sin \left(\dfrac{\pi }{6}\right)$

$\rightarrow \sf 0 * \dfrac{\sqrt{3}}{2}+\left(-1\right) * \dfrac{1}{2}$

$\rightarrow \sf -\dfrac{1}{2}$

7 0

2 years ago

Help asap!!!!!!!

azamat

Answer:

C and D

Step-by-step explanation:

So from the equation y = 1.26x + 9.49 we can gather that 9.49 is an initial value because it has to be added to the number with a variable ( 1.26x)

Because 1.26 has a variable of x and x represents a week, we know that the number 1.26 will increases in value depending on how many weeks have passed.

7 0

3 years ago

Two numbers are in ratio s:t .if the first is a,find the second

Whitepunk [10]

Answer:

The second number is a*t/s

Step-by-step explanation:

s/t = a / x Let x be the second number.

sx = at divide by s

x = at/s

7 0

3 years ago

Assuming a 90% confidence level, the margin of error is approximately?

elena-s [515]

Answer:

0.3

Step-by-step explanation:

The margin of error is calculated as ...

(standard deviation)/√(sample size) × (z*-score)

where the z*-score is chosen based on the desired confidence level.

Here, you have ...

standard deviation = 2.7
√(sample size) = √225 = 15
z*-score for 90% confidence level = 1.645

Putting these values in the above expression for margin of error gives ...

2.7/15·1.645 = 0.2961 ≈ 0.3

7 0

3 years ago