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tatuchka [14]
3 years ago
12

The length of a rectangle is 8 centimeters, and the area of the rectangle is 72 square centimeters. What is the width of the rec

tangle?
Mathematics
1 answer:
Afina-wow [57]3 years ago
8 0

Answer:

The width if the rectangle is 9 sq. cm.

Step-by-step explanation:

a = wl, which means area equals length times width, so to find the width when you have the length and area you need to divide the area by the length.

72/8 = 9

This exact method will also work if you have the width and not the length.

Hope this helps!

You might be interested in
Question 24 points)Bill cuts a circle out of a square piece of wood to use for a project.Approximately how much wood will be lef
maks197457 [2]

The square piece of wood measures 32 in per side,

Then the circle that can be cut off it has a radius of 16 in (half of the diameter 32 in)

Therefore, the area of the circle is going to be given by the formula:

\begin{gathered} \text{Area}=\pi R^2 \\ \text{Area}=\pi(16)^2\text{ }\approx803.\, 84in^2 \end{gathered}

And the area of the initial square was:

Area = 32^2 in^2 = 1024 in^2

Therefore the left-overs of the piece of wood would be the difference:

1024 in^2 - 803.84 in^2

3 0
1 year ago
A bridge is sketched in the coordinate plane as a parabola represented by the equation h=40-0.01x2, where h refers to the height
ElenaW [278]

Answer:

The length of the bridge is 126.492 feet.

Step-by-step explanation:

Let h(x) = 40-0.01\cdot x^{2}, where x is the position from the middle of the bridge, measured in feet, and h(x) is the height of the bridge at a location of x feet, measured in feet. In this case, the length of the bridge is represented by the distance between the x-intercepts of the parabola, which we now find by factorization:

40-0.01\cdot x^{2} = 0 (Eq. 1)

x^{2} = \frac{40}{0.01}

x =\pm \sqrt{\frac{40}{0.01} }

x = \pm 63.246\,ft

Given that the parabola is symmetrical with respect to y-axis, then the length is two times the magnitude of the value found above, that is:

l = 2\cdot (63.246\,ft)

l = 126.492\,ft

The length of the bridge is 126.492 feet.

3 0
3 years ago
A scatter plot showed a positive correlation for 11 bowlers. As the number of strikes, s, a bowler made in a game increased, the
almond37 [142]

Answer:

s = 4

Step-by-step explanation:

The equation for the line of best fit for the data is p=25s+40.

Where p is no. of points and s is no. fo strikes

We need to find the number of strikes made by a bowler with 140 points.

Put p = 140

p=25s+40

140 = 25s+40

Subtract 40 to both sides,

140-40 = 25s+40-40

100 = 25s

⇒ s = 4

So, there are 4 strikes made by a bowler with 140 points.

5 0
3 years ago
Find the IQR of the data set in the dot plot
Sholpan [36]

Answer:

5.5 - 1.5 = 4

Brainliest pls

7 0
3 years ago
A laptop company claims up to 11.0 hours of wireless web usage for its newest laptop battery life. However, reviews on this lapt
emmainna [20.7K]

Answer:

Step-by-step explanation:

given that a  laptop company claims up to 11.0 hours of wireless web usage for its newest laptop battery life. However, reviews on this laptop shows many complaints about low battery life. A survey on battery life reported by customers shows that it follows a normal distribution with mean 10.5 hours and standard deviation 27 minutes.

convert into same units into hours.

X is N(10.5, 0.45)

a)  the probability that the battery life is at least 11.0 hours

P(X\geq 11)\\\\=1-0.8667\\=0.1333

(b)  the probability that the battery life is less than 10.0 hours

=P(X

(c)  the time of use that is exceeded with probability 0.97

=97th percentile

= 11.844

d)  The time of use that is exceeded with probability 0.9 is

is 90th percentile = 10.885

8 0
3 years ago
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