3 years ago

A fair spinner has 10 equal sections: 3 red, 3 blue and 4 green.

Mathematics

1 answer:

Natalka [10]3 years ago

6 0

Answer:

Step-by-step explanation:

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A candy store sells varieties of candy. Out of these 20 varieties,12 varieties contain chocolate. What precent of the total numb

vazorg [7]

12/20=.6

Thus, move the decimal point two places to the right, and the answer is 60%

5 0

3 years ago

What is the slope of the line that passes through the points (-4, -9) and (5, 3)

egoroff_w [7]

Answer:

4/3

Step-by-step explanation:

Moving from (-4, -9) to (5, 3), x (the 'run') increases by 9 from -4 to 5, and y (the 'rise') increases by 12 from -9 to +3. Thus, the slope of the line connecting the two points is

m = rise / run = 12/9 = 4/3

It may help to think of the change in x (9) as the horizontal leg of a right triangle and the change in y (12) as the vertical leg. Then

m = (vertical leg length) / (horizontal leg length) = 12/9 = 4/3

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3 years ago

In my number the digit in the ones place is double the digit in the tens place. the sum of the digits is 3

jasenka [17]

The number is 21 because 2 is 1 doubled, and 2+1 is 3.

6 0

3 years ago

The total area of Wisconsin is 65498 square miles. Of that about 80% is land area. About how many of Wisconsin is not land area

geniusboy [140]

Answer:

52398.4 square miles

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Descried how to derive the quadratic formula from a quadratic equation in standard form

Aleks [24]

Answer:

The standard form of a quadratic equation is:

$ax^2+bx+c=0$ , $a\neq 0$

Quadratic Formula Derivation:

$ax^2+bx+c=0\\$

$x^2+\frac{b}{a}x+\frac{c}{a} =0$

$x^2+\frac{b}{a}x = -\frac{c}{a}$

Completing the Square:

$x^2+\frac{b}{a}x +\frac{b^2}{4a^2} = \frac{b^2}{4a^2}-\frac{c}{a}$

$( x+\frac{b}{2a} )^2 = \frac{b^2-4ac}{4a^2}$

Square Root property:

$x+\frac{b}{2a} = \pm \sqrt{ \frac{b^2-4ac}{4a^2}}$

$x = -\frac{b}{2a} \pm { \frac{\sqrt {b^2-4ac}}{2a}}$

$x = \frac{-b\pm\sqrt{b^2-4ac}} {2a} }$

8 0

3 years ago