Help me on these mathematics questions please?

Mathematics

2 answers:

Klio2033 [76]3 years ago

7 0

Think i got it
E= 75
F= 90
G= 25

CaHeK987 [17]3 years ago

7 0

Answer:

x=61

E=65

F=90

G=25

Step-by-step explanation:

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Factor the trinomial by grouping. 9x^3 - 3x^2 -30x

katen-ka-za [31]

Answer:

3x(3x+5)(x-2)

Step-by-step explanation:

$9x^3-3x^2-30x= \\\\3x(3x^2-x-10)= \\\\3x(3x^2+5x-6x-10)= \\\\3x(x(3x+5)-2(3x+5))= \\\\3x(3x+5)(x-2)$

Hope this helps!

4 0

3 years ago

The oblique pyramid has a square base. What is the volume of the pyramid? 2.5 cm3 5 cm3 6 cm3 7.5 cm3

Olenka [21]

Take a look at the attachment below. It fills in for the attachment that wasn't provided in the question -

An oblique pyramid is one that has a top not aligned with the base. Due to this, the height of the pyramid connects with two vertices at its ends to form a right angle present outside the pyramid, knowing that it is always perpendicular to the base. There is no difference between the calculations of the volume of an oblique pyramid and a pyramid however -

$\\Base Area = 2 cm * 2 cm = 4 cm^2,\\Volume ( Pyramid ) = 1 / 3 * ( Base Area ) * ( Height ),\\Volume = 1 / 3 * ( 4 ) * ( 3.75 ),\\-------------------------\\Volume = 5 cm^3$

And thus, you're solution is 5 cm^3, or in other words option b!

3 0

3 years ago

ANSWER ASAP 30 POINTS

sammy [17]

The correct answer is A) Property Tax. Hope this helps.

4 0

3 years ago

If the MAD for a forecast is 3.2, we can say that a. The forecast is 3.2 units too high on the average b. The forecast is 3.2 un

Rudik [331]

Answer:

The forecast is accurate within plus or minus 3.2 units

Step-by-step explanation:

Mean Absolute Deviation is a statistical measure of dispersion from forecast. It measures accuracy level of predicted forecast, by averaging the difference between absolute value of each error from forecasted value.

MAD for a forecast states that : Forecast is accurate within the expected range variation of Mean Absolute Deviation.

So : If the MAD for a forecast is 3.2, we can say that - The forecast is accurate within plus or minus 3.2 units

3 0

3 years ago

I need help with this because ima fail

Studentka2010 [4]

Answer:-αx-20=-14 --> $\frac{-6}{x}$