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3 years ago

one of the comers of a cube is sliced off the resulting cross section will have a minimum of ? Sides ?

Mathematics

1 answer:

Molodets [167]3 years ago

8 0

a corner of a cube connects 3 sides to each other,

then add the side of the cut

so it would have 4 sides

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Which expressions are equivalent to 2(4f + 2g)?

andreyandreev [35.5K]

Answer:

For example, 8f + 4g is one of the most used expression

Another example is 4 (2f + g), is correct too

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2 years ago

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Five pounds of birdseed is used to fill 4 identical bird feeders.

enyata [817]

Answer:

a. We need 1/4 for each feeder

b. To fill each feeder we need 1.25 pounds

c. We need 60 ounces to fill three bird feeders

Step-by-step explanation:

Five pounds of birdseed is used to fill 4 identical bird feeders,

a. We divide all the birdseed in 4 feeders, so, we need 1/4 for each feeder.

b. If we use 5 pounds for the 4 feeders, so each feeders will take 1/4 of the 5 pounds

=1/4 x 5=1.25 pounds

c. To fill three bird feeders we have to multiply the amount of pounds by feeder by 3 feeders

=1.25 pounds x 3

= 3,75 pounds

If 16 ounces are a pound

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3 years ago

Select the two values of x that are roots of this equation 3x^2 + 1 =5x

Zina [86]

Answer:

x = 1.434 and x=0.232

Step-by-step explanation:

To find the root of the equation stated above we need to:

(1) Write the polynomial equation with zero on the right hand side:

$3x^{2} + 1 = 5x$ ⇒ $3x^{2} -5x + 1 = 0$

(2) Divide the whole equation by 3

$3x^{2} -5x + 1 = 0$ ⇒ $x^{2} -\frac{5}{3}x + \frac{1}{3}= 0$

(3) Use the quadratic formula to solve the quadratic equation:

The quadratic formula states that the two solutions for a quadratic equation is given by:

$\frac{-b±\sqrt{b^{2} - 4ac}}{2a}$ (1)

In this case, a = 1, b = $-\frac{5}{3}, c= \frac{1}{3}$

Substituiting a, b and c in equation (1) We get:

$\frac{-\frac{5}{3}±\sqrt{(-\frac{5}{3})^{2} - 4(1)(\frac{1}{3})}}{2(1)}$ (1)

The two solutions are:

x = 1.434 and x=0.232

8 0

3 years ago