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3 years ago

Can someone please help me and explain

Mathematics

1 answer:

julia-pushkina [17]3 years ago

4 0

Answer: (x-2) inches.

The question asks for length in square inches. There is no such thing. It should read in inches. Since it is a square frame, we can take the square root of (x^2-4x+4), which is (x-4). This is in incnes

Step-by-step explanation:

(x-4)*(x-4) = x^2-4x+4

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Unit sales for new product ABC have varied in the first seven months of this year as follows: Month Jan Feb Mar Apr May Jun Jul

Alecsey [184]

Answer:

$\sigma = 121.53$

Step-by-step explanation:

Required

The population standard deviation

First, calculate the population mean

$\mu = \frac{\sum x}{n}$

This gives:

$\mu = \frac{148+ 329+ 491 +167+ 228+285+ 441}{7}$

$\mu = \frac{2089}{7}$

$\mu = 298.43$

The population standard deviation is:

$\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n}}$

So, we have:

$\sigma = \sqrt{\frac{(148 - 298.43)^2 + ..........+ (441- 298.43)^2}{7}}$

$\sigma = \sqrt{\frac{103387.7143}{7}}$

$\sigma = \sqrt{14769.6734714}$

$\sigma = 121.53$

8 0

3 years ago

Shannon test-drives a car in Germany and drives 95 kilometer per hour. What is her speed in miles per hour? (1 kilometer < 0.

victus00 [196]

Answer:

58.9 miles per hour

Step-by-step explanation:

Step 1: Convert 95 Kilometers per hour to miles per hour

1 Kilometer = 0.62 miles

95 Km x $\frac{0.62 miles}{1 km}$

cancel Km

95 Km x $\frac{0.62 miles}{1 km}$ = $\frac{95}{1}$ x $\frac{0.62 miles}{1}$ = $\frac{58.9 miles}{1}$ or 58.9 miles

Change it into speed

58.9 miles per hour (59 miles per hour (Round off))

(Note: I don't know if I should round off because the instructions aren't that clear. This solution might or might not have been thought to you by your lecturer.)

4 0

2 years ago

Calcylate the volume of this regular solid

MatroZZZ [7]

Answer:

V = 270 cm³

Step-by-step explanation:

Remember your volume formula: V=<em>lwh</em>

So, plug in all your variables and multiply:

(6)(5)(9) = 270

And we have our final answer!

8 0

4 years ago

To get ready for her first semester of school, Jayne spend a total of $7.92 for eight identical notebook what was the cost of ea

skelet666 [1.2K]

Answer:

0.99 cents each

Step-by-step explanation:

7.92 divided by 8= 0.99

Hope this helped

8 0

3 years ago

Read 2 more answers

What is the best estimate for the product of 289 and 7

Alja [10]

The best estimate would be 2,000 but, the original answer is 2,023

7 0

4 years ago