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NARA [144]
3 years ago
9

The perimeter of a rectangle is 68 km. If the length is 2 km less than three times the width, w

Mathematics
1 answer:
iogann1982 [59]3 years ago
6 0

Answer:

Step-by-step explanation:

68=6x-4+2x

68=(6+2)x-4

68=8x-4

68+4=8x-4+4

72=8x

72%2F8=8x%2F8

9=cross%288%29x%2Fcross%288%29

9=x

The width:x=9km

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omeli [17]

Answer:

h≈1.43

Step-by-step explanation:

Simply ,Square the radius, and then divide the radius squared into the tripled volume. For this example, the radius is 2. The square of 2 is 4, and 300 divided by 4 is 75. Divide the amount calculated in Step 2 by pi, which is an unending math constant that begins 3.14, to calculate the cone's height.

4 0
3 years ago
Given that a 90% confidence interval for the mean height of all adult males in Idaho measured in inches was [62.532, 76.478]. Wh
NNADVOKAT [17]

Answer:

The point estimate used to estimate the mean height of all adult males in Idaho is 69.505 inches.

Step-by-step explanation:

Each confidence interval has two bounds, the lower bound and the upper bound. The points estimate used to estimate the mean is the halfway point between those two bounds, that is, the sum of those two bounds divided by two.

In this problem, we have that:

Lower bound: 62.532

Upper bound: 76.478

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3 years ago
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Ella has to add 32.833 lbs of water to get 33.333 lbs of syrup.

<u>Solution:</u>

Ella has 0.5 lbs of sugar. Let x lbs be the amount of water Ella should add to get the 1.5% of syrup,

\Rightarrow0.5\text{ lbs }- 1.5\%

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On writing the proportion,

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3 years ago
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