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3 years ago

8

There are 48 colored pencils in 4 boxes of colored pencils. Which of the following expresses the ratio of colored pencils to box

es?

2 answers:

Harman [31]3 years ago

6 0

The ratio is 48:4, 36:4:, 24:2, or 12:1. Depending on the choices given.

Alekssandra [29.7K]3 years ago

5 0

Divide 48 by 4 to see how many are in one.

it's 1 box containing 12

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Elise has to use the information given below to find the original number. Write an equation to represent the situation. What is

lilavasa [31]

Let x= original number
equation: 2x+24=2/7 x
move 2x over to the other side of the equation to get 24=-12/7 x. Then, multiply both sides of the equation by -7/12 to isolate the variable.
The final answer should be x=-14

3 0

3 years ago

denis-greek [22]

Answer:

$\frac{3\±\sqrt{3}}{3}$

Step-by-step explanation:

Whe have the function $3x^2-6x+2=0$

To solve this equation we must factor.

To factor, we need to find the points where the function is equal to zero. So we use the quadratic formula

$\frac{-b\±\sqrt{b^2-4ac}}{2a}$

Where:

a = 3

b = -6

c = 2

Then

$\frac{-(-6) + \sqrt{(-6)^2-4(3)(2)}}{2(3)} = \frac{3+\sqrt{3}}{3}\\\\and\\\\\frac{-(-6) - \sqrt{(-6)^2-4(3)(2)}}{2(3)}= \frac{3-\sqrt{3}}{3}$

finally the correct answer is $\frac{3\±\sqrt{3}}{3}$

5 0

3 years ago

Read 2 more answers

Will give brainliestt

Natasha_Volkova [10]

Answer: (-5, -3)

Step-by-step explanation:

(-10, -6)

-10/2 = -5

-6/2 = -3

7 0

3 years ago

Which is a quantitative variable?

ira [324]

Answer:

Variables that have are measured on a numeric or quantitative scale. Ordinal, interval and ratio scales are quantitative.

Step-by-step explanation:

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3 0

3 years ago

Read 2 more answers

You measure 20 turtles' weights, and find they have a mean weight of 45 ounces. Assume the population standard deviation is 11.5

Naily [24]

Answer: the maximal margin of error associated with a 90% confidence interval for the true population mean turtle weight = 4.23

Step-by-step explanation:

Formula for margin of error : $E=\dfrac{z^*\times (Population\ standard\ deviation)}{\sqrt{Sample\ size}}$

, where z* = Critical z-value.

Given: population standard deviation = 11.5 ounces

Sample size = 20

Z value for 90% confidence level = 1.645

margin of error (E) = $\dfrac{1.645\times11.5}{\sqrt{20}}$

$\approx4.23$

Hence, the maximal margin of error associated with a 90% confidence interval for the true population mean turtle weight = 4.23

3 0

3 years ago