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4 years ago

10

Chloe sorts her beads. The number of red beads she has is 5 5/6 times the number of green beads. If she has 60 green beads, how

many rec beads dose she have?

2 answers:

love history [14]4 years ago

5 0

Answer:

60x5 would equal 350, right? So then to break it down, just add this. 300+50=350 beads. Hope this helps.

Molodets [167]4 years ago

4 0

60*5=300+50=350 beads (I'm pretty sure this is right.)

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PLEASE HELP ME ALSO LOOK

saul85 [17]

Answer:

B. 0.73

Step-by-step explanation:

Add all numers so the first is 2/10 = 0.2

then 35/100 = 0.35

and then 16/100 = 0.16

finally 2/100 = 0.02

Now add all decimals which is equal to 73/100 = 0.73 and that's your answer.

^Virtuoso^

8 0

3 years ago

Consider the equation below. (If an answer does not exist, enter DNE.) f(x) = x3 − 6x2 − 15x + 2 (a) Find the interval on which

Burka [1]

Answer:

a) $(-\infty, -1) \cup (5, \infty)$

b) $(-1,5)$

Step-by-step explanation:

The first step to solve this question is finding the roots of the derivative of x.

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:

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

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

$\bigtriangleup = b^{2} - 4ac$

In this question:

$f(x) = x^{3} - 6x^{2} - 15x + 2$

So

$f'(x) = 3x^{2} - 12x - 15$

Finding the roots:

$3x^{2} - 12x - 15 = 0$

Simplifying by -3

$x^{2} - 4x - 5 = 0$

So $a = 1, b = -4, c = -5$

Then

$\bigtriangleup = (-4)^{2} - 4*1*(-5) = 36$

$x_{1} = \frac{-(-4) + \sqrt{36}}{2} = 5$

$x_{2} = \frac{-(-4) - \sqrt{36}}{2} = -1$

So the function can be divided in three intervals.

They are:

Less than -1

Between -1 and 5

Higher than 5

In which it increases and which it decreases?

Less than -1

Lets find the derivative in a point in this interval, for example, -2

$f'(x) = 3x^{2} - 12x - 15$

$f'(-2) = 3*(-2)^{2} - 12*(-2) - 15 = 21$

Positive.

So in the interval of $(-\infty, -1)$ , the function increases.

Between -1 and 5

Will choose 0.

$f'(x) = 3x^{2} - 12x - 15$

$f'(0) = 3*(0)^{2} - 12*(0) - 15 = -15$

Negative.

So in the interval of $(-1,5)$ , the function decreases.

Higher than 5

Will choose 6.

$f'(x) = 3x^{2} - 12x - 15$

$f'(6) = 3*(6)^{2} - 12*(6) - 15 = 21$

Positive

So in the interval of $(5, \infty)$ , the function increases.

(a) Find the interval on which f is increasing.

Using interval notation

$(-\infty, -1) \cup (5, \infty)$

b) Find the interval on which f is decreasing.

$(-1,5)$

5 0

3 years ago

Estimate the value of 9.9 squared 2 x 1.79

Mekhanik [1.2K]

Answer: 180

Step-by-step explanation: 9.9 squared by 1.79 is 180

5 0

3 years ago

Please help and show how you got the answer

Contact [7]

Answer:

w=3

Step-by-step explanation:

$\frac{2w - 1}{5} + w + 2 = 2w \\ \frac{2w - 1 + 5w + 10}{5} = 2w \\ 7w + 9 = 10w \\ 9 = 10w - 7w \\ 9 = 3w \\ w = 3$

7 0

3 years ago

Find the indicated z-score shown in the graph to the right. Area = 0.1401

True [87]

Answer:

Sorry i dont do math

Step-by-step explanation:

6 0

3 years ago