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3 years ago

Whats the midpoint between 8.5 and 8.6?

Mathematics

2 answers:

nordsb [41]3 years ago

6 0

The midpoint between 8.5 and 8.6 is 8.55

kaheart [24]3 years ago

4 0

I would say 8.55, regardless you're talking about the median or not.

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Convert -3pi/10 to degrees

ipn [44]

we know there are 180° in π radians, how many degrees then in -3π/10 radians?

$\bf \begin{array}{ccll} degrees&radians\\ \cline{1-2} 180&\pi \\\\ x&-\frac{3\pi }{10} \end{array}\implies \cfrac{180}{x}=\cfrac{\pi }{~~-\frac{3\pi }{10}~~}\implies \cfrac{180}{x}=\cfrac{\frac{\pi}{1} }{~~-\frac{3\pi }{10}~~} \\\\\\ \cfrac{180}{x}=\cfrac{\pi }{1}\cdot \cfrac{10}{-3\pi }\implies \cfrac{180}{x}=-\cfrac{10}{3}\implies 540=-10x\implies \cfrac{540}{-10}=x \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill -54=x~\hfill$

5 0

3 years ago

If h(x) = 7 + 6f(x) , "where f(5) = 7 and f '(5) = 3", find h'(5).

Otrada [13]

Does arms WNYC settled Adidas acid sky

4 0

3 years ago

What is 2/3 times 4/5 as a decimal!

Nitella [24]

Hey there,

Your correct answer to $\frac{2}{3}$ × $\frac{4}{5}$ as a decimal would be 0.53

Your correct answer would be $\boxed{0.53}$

Hope this helps

~Jurgen

5 0

3 years ago

Read 2 more answers

Two boxes have the same volume. One box has a base that is 5\text{ cm}5 cm5, start text, space, c, m, end text by 5\text{ cm}5 c

sveticcg [70]

Answer:

4times tall

Step-by-step explanation:

Volume of the boxes = Base area × height

Volume of the first box V1 = A1h1

Given the base of the first box to be 5cm, the base area:

A1 = 5cm×5cm = 25cm²

Volume of the first box V1 = 25h1... 1

Similarly, volume of the second box

V2 = A2h2

Given the base of the second box to be 10cm, the base area:

A2= 10cm×10cm = 100cm²

Volume of the second box

V2 = 100h2... 2

If the two boxes have the same volume, then V1 = V2

25h1 = 100h2

divide both sides by 25

25h1/25 = 100h2/25

h1 = 4h2

Since the height of the smaller box is represented as h1, then the height of the smaller base is 4 times tall.

3 0

3 years ago

A random sample of 45 door-to-door salespersons were asked how long on average they were able to talk to the potential customer.

dimulka [17.4K]

Answer:

b. =8.5+1.96*3/SQRT(45), and =8.5-1.96*3/SQRT(45)

Step-by-step explanation:

Sample size (n) = 45

Sample mean (M) = 8.5 minutes

Variance (V) = 9 minutes

Z-score for a 95% confidence interval (z) = 1.96

A confidence interval is defined by the following expression:

$M\pm z\sqrt{\frac{V}{n} }$

Applying the given data:

$8.5\pm 1.96\sqrt{\frac{9}{45} }\\8.5\pm 1.96\frac{3}{\sqrt 45}$

Writing in Excel statements, the limits of the interval would be

=8.5+1.96*3/SQRT(45), and =8.5-1.96*3/SQRT(45)

Therefore, the answer is alternative b.

8 0

3 years ago