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Andreyy89
4 years ago
15

1 over 4 + 1 over 10 in simplist form

Mathematics
1 answer:
NISA [10]4 years ago
4 0

Answer:

7/20

Step-by-step explanation:

1/4+1/10=5/20+2/20=7/20

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Find the volume of a right circular cone that has a height of 12 m and a base with a diameter of 8.9 m. Round your answer to the
steposvetlana [31]

Volume of Cone

Volume of the right circular cone is  248.7 m³

Step-by-step explanation:

A right circular cone is a three dimensional geometrical object. Right circular cone is a circular cone whose axis is perpendicular to its base. The slant height is the length of an element. All elements of a right circular cone  are all equal.

The volume of the right circular cone is defined as  1/3 \pi r^{2}h

where r is radius of the cone and h is the height of the cone

V =  1/3 \pi r^{2}h

Given diameter d  = 8.9 m

So the radius r = 8.9 ÷ 2 = 4.45 m

V = (1/3) × 3.14 × (4.45)²  × 12

= (1/3) × 3.14 × 19.80 × 12

= 248.69 m³

Hence the Volume of the right circular cone is  248.7 m³

4 0
3 years ago
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Use the elimination method to solve the system of equations. Choose the
miss Akunina [59]

9514 1404 393

Answer:

  A.  (4, 12)

Step-by-step explanation:

Adding the second equation to twice the first will eliminate y.

  2(10x +2y) +(3x -4y) = 2(64) +(-36)

  23x = 92 . . . . . . . . simplify

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2. What percent of 80 is 8?
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Step-by-step explanation:

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To change a decimal to a fraction we route write the digit to the left or to the right of the decimal point over the appropriate
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The digit goes to the right of the decimal point

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An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 220 engines and the mean pressure was 5.4 pounds/square inch (psi), the level of significance for the hypothesis test is 0.05. This is further explained below.

<h3>What is the level of significance?</h3>

Generally, the level of significance is simply defined as statistical analysis, the significance level is defined as the likelihood of rejecting the null hypothesis when it is correct.

In conclusion,  The average pressure throughout testing on 220 engines was 5.4 psi, and the significance threshold for the hypothesis test was set at 0.05.

Read more about  probability

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