2 years ago

Simplify 3x^2(7x^2 + 2x -4)

Mathematics

1 answer:

arsen [322]2 years ago

6 0

Answer:

21x^4+6x^3-12x^2

Step-by-step explanation:

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Juliette [100K]

Answer:

The first one is 648 and the second one is 11,600

Step-by-step explanation:

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3 years ago

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Combine all like terms to simplify the expression.

Dvinal [7]

12x + 5 - 4x + 2x² =

= 2x² + 12x - 4x + 5 = 2x² + 8x + 5

8 0

2 years ago

Solve the Linear system using substitution X=6-4y 3x-2y=1

katovenus [111]

3(6-4y)-2y=1
18-12y-2y=1
18-14y=1
-14y=-17
Y=17/14
Now with a calculator plug in 17/4 multiply it by 4 and subtract the solution from 6 and h get x

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2 years ago

Find the missing length marked with a question mark. UVW-USR

mariarad [96]

Given:

$\Delta UVW\sim \Delta USR$

To find:

The missing length marked with a question mark.

Solution:

Let x be the missing value.

We have,

$\Delta UVW\sim \Delta USR$

Corresponding sides of similar triangles are proportional, so

$\dfrac{UV}{US}=\dfrac{VW}{SR}=\dfrac{UW}{UR}$

Using this, we get

$\dfrac{UV}{US}=\dfrac{UW}{UR}$

On substituting the values, we get

$\dfrac{70}{x}=\dfrac{55}{44}$

$\dfrac{70}{x}=\dfrac{5}{4}$

On cross multiplication, we get

$70\times 4=5\times x$

$280=5x$

$\dfrac{280}{5}=x$

$56=x$

Therefore, the missing length is 56 units.

3 0

2 years ago

Are corresponding sides and angles equal

andrezito [222]

Yes they are equivalent

8 0

2 years ago