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wariber [46]
3 years ago
14

Additional mathematics

Mathematics
1 answer:
insens350 [35]3 years ago
5 0

Answer:

I don't know what you want me to answer but this is the definition=Additional Mathematics is a qualification in mathematics, commonly taken by students in high-school (or GCSE exam takers in United Kingdom). It is applied to a range of problems set out in a different format and wider content to the standard Mathematics at the same level.

Step-by-step explanation:

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Part of performing routine computer maintenance includes
tigry1 [53]

Answer:

deleting Internet browsing history.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The area of a rectangular piece of cardboard is represented by
Liula [17]

This question is solved applying the formula of the area of the rectangle, and finding it's width. To do this, we solve a quadratic equation, and we get that the cardboard has a width of 1.5 feet.

Area of a rectangle:

The area of rectangle of length l and width w is given by:

A = wl

w(2w + 3) = 9

From this, we get that:

l = 2w + 3, A = 9

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = a(x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}

x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}

\Delta = b^{2} - 4ac

In this question:

w(2w+3) = 9

2w^2 + 3w - 9 = 0

Thus a quadratic equation with a = 2, b = 3, c = -9

Then

\Delta = 3^2 - 4(2)(-9) = 81

w_{1} = \frac{-3 + \sqrt{81}}{2*2} = 1.5

w_{2} = \frac{-3 - \sqrt{81}}{2*2} = -3

Width is a positive measure, thus, the width of the cardboard is of 1.5 feet.

Another similar problem can be found at brainly.com/question/16995958

5 0
3 years ago
When mrs. myles gave a test, the scores were normally distributed with a mean of 72 and a standard deviation of 8. this means th
irina [24]
The empirical rule states that in a normal distribution,
68% of data is within 1 std deviation of the mean
95%  of data is within 2 std deviation of the mean
99.7% of data is within 3 std deviation of the mean

In this case 95% of the cases would be within two std deviations of the mean 
    mean - 8         and    mean + 8
     72   - 8 = 64   and    72 + 8 = 80 

then 95% of the scores are between  64% and 80% on the test. 
5 0
3 years ago
Jan saw 9 full moons in 52 daya
MrRissso [65]

Answer:

1 full moon per 6 days

I'm going to guess that is what you want.

3 0
3 years ago
I need help with this pleasee
Sauron [17]

Answer:

120

Step-by-step explanation:

The area of the room is 300 feet^2

The carpet has a side length of 2.5 feet so you divide 300 by 2.5

300/2.5 = 120

3 0
3 years ago
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