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3 years ago

A box contains 5 red marbles, 6 white marbles, and 4 blue marbles. find p(red or blue)

Mathematics

2 answers:

vladimir1956 [14]3 years ago

5 0

That is what i think is the right answer.

9/15=3/5

Stells [14]3 years ago

3 0

for the red it is 5out of 15 or 3/5

and for the blue it is 4/15

and if it wants it together it is 9/15 or 3/5

hope this helps

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What are the coordinates of the vertex of the function f(x)=x^2+10x−3? (–5, –28) (–5, 28) (5, –28) (5, 28)

polet [3.4K]

Answer:

(-5,-28)

Step-by-step explanation:

Given

$f(x)=x^2+10x - 3$

Required

Find the coordinates of the vertex

Given that the function is a quadratic function;

The general form of a quadratic function is

$f(x)= ax^2+bx +c$

By comparison;

$a = 1\ b = 10\ and\ c = -10$

To calculate the coordinates of the vertex;

we start by calculating the x-coordinate;

$x = \frac{-b}{2a}$

Substitute 10 for b and 1 for a

$x = \frac{-10}{2*1}$

$x = \frac{-10}{2}$

$x = -5$

Substitute $x = -5$ in the given function;

$y=x^2+10x - 3$

$y=(-5)^2+10*-5 - 3$

$y=25-50 - 3$

$y=-28$

<em>Hence, the coordinates of the vertex is (-5,-28)</em>

6 0

3 years ago

Plz Help Me! I don’t have much time

JulijaS [17]

Equilateral triangles have three equal angles, so we right away know that x=60º. Then, we just solve (3(60)-70)º, which is 110º, for the answer.

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3 years ago

Read 2 more answers

Simplify the following expressions -5(-7x + 4 + 9y)

bonufazy [111]

Answer:

35x-45y-20

Step-by-step explanation:

-5(-7x+4+9y)

distribute the 5:

35x-20-45y

To put this in order, variables first so:

35x-45y-20

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vovangra [49]

Answer:

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Step-by-step explanation:

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Ainat [17]

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3 years ago