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3 years ago

Please help!!!! It’s #14 and explain and show me how to do it please

Mathematics

1 answer:

GREYUIT [131]3 years ago

3 0

Part One

The cost of 2 liters is $2.40

The cost of 1 liter = 2.40/2 = 1.20

Part two

1 bottle contains 12 liters

6 bottles contain 12*6 = 72 liters.

All of this comes at a cost of 3.90

The cost is 3.90 / 72 = 0.054 dollars / Liter which is about 5 pennies.

The one with the higher cost is 1.40 dollars / liter. Part One. Answer

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Answer correclty

kolezko [41]

Answer:

2. B) The events have a strong positive linear correlation.

1. C) Find the slope using the slope formula:

$\frac{y_2 - y_1}{x_2 - x_1}$

Step-by-step explanation:

2. The correlation coefficient is 0,02, which is positive, so this would be the obvious choice.

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I am joyous to assist you anytime.

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3 years ago

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Mark is baking cookies he needs 2/3 cup of flour for each batch of cookies if each batch represents 1/4 of the total numbers of

Lera25 [3.4K]

Answer: 2 2/3 cups of flour

Step-by-step explanation: If one batch represents 1/4 of the total number of cookies he needs, then it can be deduced that he needs four total batches. If it requires 2/3 cups of flour for each batch and he needs 4 batches, you would multiply 2/3 by 4 to get the answer.

2/3 × 4 = 2 2/3

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3 years ago

How do u factor this

PilotLPTM [1.2K]

You can factor a parabola by finding its roots: if

$p(x)=x^2+bx+c$

has roots $x_1,\ x_2$ , then you have the following factorization:

$p(x) = (x-x_1)(x-x_2)$

In order to find the roots, you can use the usual formula

$x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

In the first example, this formula leads to

$x_{1,2} = \dfrac{-2\pm\sqrt{4+4}}{2} = \dfrac{-2\pm\sqrt{8}}{2} = \dfrac{-2\pm2\sqrt{2}}{2} = 1 \pm \sqrt{2}$

So, you can factor

$x^2-2x-1 = (x-1-\sqrt{2})(x-1+\sqrt{2})$

The same goes for the second parabola.

As for the third exercise, simply plug the values asking

$f(1.5)=-5.25$

you get

$f(-1.5) = 1.5c-3 = -5.25$

Add 3 to both sides:

$1.5c = -2.25$

Divide both sides by 1.5:

$c = 1.5$

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3 years ago

One angle in an obtuse isosceles triangle measures 40°. What are the measures of the other two angles?

Damm [24]

An obtuse triangle has one obtuse angle, or an angle that measures more than 90° but less than 180°. Options 1 and 2 are not correct, because these are acute angles.
So, one of the angles must be 40°, and the other may be 100° or 120°.
The measures of the angles in a triangle add up to 180°.
$40^\circ + 40^\circ +x = 180^\circ \\
80^\circ + x=180^\circ \\
x=180^\circ - 80^\circ \\
x=100^\circ$
The other two angles are 40° and 100°.

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3 years ago

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Murljashka [212]

Answer:

The correct option is B.

Step-by-step explanation:

It is given that triangle A"B"C" is the image of triangle ABC after transformation.

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It means the figure is rotated either counterclockwise 90° or clockwise 270°. The rotation rule is

$(x,y)\rightarrow (-y,x)$