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2 years ago

5

What is the value of x? 2 3 6 7 Geometry B - 5.0 - Extended – 2

1 answer:

Yanka [14]2 years ago

3 0

Answer:

I think 6.............,..........

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Total surface area of the drawing

Crazy boy [7]

The pentagon's area is the sum of the 5 triangles that comprise it. This is

$5( \frac{1}{2}bh) \times 2=5(9)(6.2)= 279$

where the factor of 2 accounts for the top and bottom. The walls have an area of 5 rectangles

$5(bh)=5(9)(6)=270 \\ \\ 279+270=549km^2$

4 0

2 years ago

Which is the slope of the line that passes through the points (-2,4 and (5,-1)?

12345 [234]

Use the slope formula which is y2-y1/x2-x1. -1-4/5-(-2)= -5/7

5 0

3 years ago

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HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!

castortr0y [4]

Answer:

$3.75

Step-by-step explanation:

dimes= x

quarters= x+2

nickels= 2x+2

sum is 3.75

.10x+.25(x+2)+0.05(2x+2)=3.75

.10x+.25x+.50+0.10x+0.10=3.75

0.45x=3.15

x=7 dimes (0.70)

x+2=9 quarters (2.25)

2x+2=16 nickels (0.80)

They add to $3.75

5 0

2 years ago

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Please help!! thank you.

Zina [86]

(A) Product of $-2x^{3}+x-5$ and $x^{3}-3x-4$ is:

$(-2x^{3}+x-5)(x^{3}-3x-4)$

$=-2x^{3}(x^{3}-3x-4)+x(x^{3}-3x-4)-5(x^{3}-3x-4)$

$=(-2x^{3})(x^{3})+(-2x^{3})(-3x)+(-2x^{3})(-4)+x(x^{3})+(x)(-3x)+(x)(-4)+(-5)(x^{3})+(-5)(-3x)+(-5)(-4)$

$=-2x^{6}+6x^{4}+8x^{3}+x^{4}-3x^{2}-4x-5x^{3}+15x+20$

$=-2x^{6}+6x^{4}+x^{4}+ 8x^{3}-5x^{3}-3x^{2}-4x+15x+20$

$=-2x^{6}+7x^{4}+3x^{3}-3x^{2}+11x+20$

(B) Yes.

Product of $-2x^{3}+x-5$ and $x^{3}-3x-4$ = Product of $x^{3}-3x-4$ and $-2x^{3}+x-5$ because multiplication is commutative.

Commutative Property of multiplication says that a.b = b.a.

Thus, multiplication is same irrespective of the order of two numbers.

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3 years ago

Help me with geometry

melisa1 [442]

Answer:

What question do you need help with?

Step-by-step explanation:

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3 years ago

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