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3 years ago

In a bag, there are 6 blue, 1 purple, 3 yellow, and 5 orange marbles. If a single choice is made from the

Mathematics

2 answers:

Dmitry [639]3 years ago

7 0

Answer:

it would be a 3/15 or 1/5 chance

Step-by-step explanation:

lora16 [44]3 years ago

6 0

Answer:

Its 3/15 which is 1/5. The percentages are 20%.

Step-by-step explanation:6+1+3+5=15

yellow marbles:3/15

Simplified version:1/5.

And the percentages is 20%

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Write a quadratic equation with the given roots. Write the equation in the form of ax^2+bx+c=0 where a b and c are integers

Bas_tet [7]

You haven't provided the required roots, but I can tell you how to do this kind of exercises in general.

If the $x^2$ coefficient is 1, i.e. the equation is written like $x^2+bx+c=0$ , then you can say the following about the coefficients b and c:

$b$ is the opposite of the sum of the roots
$c$ is the multiplication of the roots.

So, for example, if we want an equation whose roots are 4 and -2, we have:

$4+(-2) = 4-2 = 2 \implies b = -2$
$4 \cdot (-2) = -8 \implies c = -8$

So, the equation is $x^2-2x-8=0$

If your roots are rational, you can work like this: suppose you want an equation with roots 3/4 and 1/2. You have:

$\dfrac{3}{4}+\dfrac{1}{2} = \dfrac{3}{4}+\dfrac{2}{4} = \dfrac{5}{4} \implies b = -\dfrac{5}{4}$
$\dfrac{3}{4} \cdot \dfrac{1}{2} = \dfrac{3}{8} \implies c = \dfrac{3}{8}$

And so the equation is

$x^2 - \dfrac{5}{4} + \dfrac{3}{8} = 0$

In order to have integer coefficients, you can multiply both sides of the equation by 8:

$8x^2 - 10 + 3 = 0$

5 0

3 years ago

I need help with this

BigorU [14]

no u can only buy 6, or u dont have enough money for 7

6 0

3 years ago

Which equation has no solution? O |-*-31 = 5 12x - 1) = 0 O15-3x = -8 |-* + 9 = 0

harkovskaia [24]

A because it’s the first one I saw and it looks correct

4 0

3 years ago

A board is 85cm in length and must be cut so that one piece is 11cm longer than the other piece . Find the length of each piece.

iVinArrow [24]

The shorter piece is 37 cm

The longer piece is 48 cm:

Step-by-step explanation:

Divide 85 cm by 2 = 42.5

Divide 11 cm by 2 = 5.5

Add them together = 48 cm

85 cm - 48 cm = 37 cm

8 0

3 years ago

He was left with a remainder of zero. Which of the following statements must be true?

densk [106]

Answer:

where is the statements

Step-by-step explanation:

7 0

3 years ago