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sdas [7]
3 years ago
7

11) Ten customers enter a convenience store during

Mathematics
1 answer:
photoshop1234 [79]3 years ago
6 0

Answer:

C. 3.8

Step-by-step explanation:

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Suppose an opinion poll predicted that, if the election were held today, the Conservative party would win 68% of the vote. If th
Dmitry [639]
<span>That there is a 95% chance that the Conservative party will win between 64% and 72% of the vote.</span>
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4 years ago
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Each cone of the hourglass has a height of 12 millimeters. The total height of the sand within the top portion of the hourglass
kolbaska11 [484]

The solution would be like this for this specific problem:

Volume of a cylinder = pi * r^2 * h 

Volume of a cone = 1/3 * pi * r^2 * h 

Total Height = 47

Height of the cone = 12

Height of the cylinder = 35

If the top half is filled with sand, then:

volume (sand) = pi * 4^2 * 36

volume (cone) =  1/3 * pi * 4^2 * 12

Total volume = 1960.353816 cubic millimeters

353816 / (10 * pi) = 62.4 seconds.

It will take 62.4 seconds until all of the sand has dripped to the bottom of the hourglass.

8 0
3 years ago
In triangle abc, the measure of angle b is 20 more than three times the measure of angle
sleet_krkn [62]
Let x be the degree of angle a. 

Angle b: 20+3x
Angle c: 55+x 

We know that all angles add up to 180 degrees. 

180=x+(20+3x)+(55+x) 
180= 5x+75 
180-75=5x 
105/5=x
21=x 

Angle a: 21 degrees 
Angle b: 20+3(21) => 83 degrees 
Angle c: 21+55 => 76 degrees 

Hope I helped :) 
5 0
4 years ago
A triangle has a base of (3x + 7) and a height of (5x - 1). A second
Mars2501 [29]

Answer:

The difference between the area of the original triangle and the area of the new triangle is \Delta A_{\bigtriangleup} = \frac{5}{2}\cdot (3\cdot x +7)\cdot (5\cdot x -1).

Step-by-step explanation:

The equation for the area of a triangle (A_{\bigtriangleup}) is:

A_{\bigtriangleup} = \frac{1}{2}\cdot b \cdot h

Where:

b - Base, dimensionless.

h - Height, dimensionless.

The expression for each triangle are described below:

First Triangle (b = 3\cdot x + 7, h = 5\cdot x - 1)

A_{\bigtriangleup,1} = \frac{1}{2}\cdot (3\cdot x+7)\cdot (5\cdot x -1)

Second Triangle (b = 3\cdot (3\cdot x+7), h = 2\cdot (5\cdot x -1))

A_{\bigtriangleup,2} = 3\cdot (3\cdot x+7)\cdot (5\cdot x -1)

The difference between the area of the original triangle and the area of the new triangle is:

\Delta A_{\bigtriangleup} = A_{\bigtriangleup,2}-A_{\bigtriangleup,1}

\Delta A_{\bigtriangleup} = 3\cdot (3\cdot x+7)\cdot (5\cdot x-1)-\frac{1}{2} \cdot (3\cdot x+7)\cdot (5\cdot x-1)

\Delta A_{\bigtriangleup} = \frac{5}{2}\cdot (3\cdot x +7)\cdot (5\cdot x -1)

The difference between the area of the original triangle and the area of the new triangle is \Delta A_{\bigtriangleup} = \frac{5}{2}\cdot (3\cdot x +7)\cdot (5\cdot x -1).

7 0
3 years ago
Elimination equation:<br> 5x-6y= 6<br> 2x+9y= 10
lys-0071 [83]

Step-by-step explanation:

it's close to 6

.................

3 0
3 years ago
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