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il63 [147K]
3 years ago
12

Find the values of x and y. x= y=

Mathematics
1 answer:
mezya [45]3 years ago
7 0

Answer:

7x+90+20=180

7x+110=180

7x=180-110

7x=70

7x/7 = 70/7

X=10

Y=40

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Find the volume of a pyramid with a square base, where the side length of the base is 16.6m and the height of the pyramid is 9.1
aleksandrvk [35]

Answer:

Formula for volume of square pyramid:-

V = 1/3 x a^2 x h

Where 'a' is the length of one side of the base, and 'h' is the height.

Plug in our values, given that:

16.6m = side length of base.

9.1m = height of pyramid.

V = 1/3 x a^2 x h

V = 1/3 x 16.6^2 x 9.1

V = 1/3 x 275.56 x 9.1

V = 1/3 x 2507.596

V = 2507.596/3

V = 835.865, which rounds to <u>835.9 cubic meters</u>.

7 0
2 years ago
lou thinks the expression 27x^3-64 factors to (3x-4) (9x^2+12x+16). is he correct? How can you check his work? Show all work to
larisa [96]

Answer:

Step-by-step explanation:

(a³ - b³) = (a - b) (a² + ab + b²)

27x³ - 64 = 3³x³ - 4³

               = (3x)³ - 4³   {a = 3x & b= 4)

Substitute in the above formula.

               = (3x -4)([3x]² + 3x*4 + 4²)

              = (3x - 4)(9x² + 12x + 16)

The expression 27x^3-64 factors to (3x-4) (9x^2+12x+16).

4 0
3 years ago
Identify the GCF and then factor out: 6x2y + 12xy2
Alex_Xolod [135]

Answer:

6xy(x+2y)

Step-by-step explanation:

6x²y+12xy²

The GCF between 6 and 12 is 6. Factor out 6.

= 6(x²y+2xy²)

The GCF between x² and x is x. Factor out x.

= 6x(xy+2y²)

The GCF between y and y² is y. Factor out y.

= 6xy(x+2y)

Therefore, the GCF of the expression is 6xy and the factored expression is 6xy(x+2y).

I hope this helps!

8 0
3 years ago
I don’t know how to do the problem
ahrayia [7]
Gotta move that b to the side ya dig
5 0
3 years ago
8. What is the sum of the exterior angles of
PolarNik [594]

Answer:

D. 1080°

Step-by-step explanation:

Sum=(n-2)x180°

(8-2)x180°

6x180°

1080°

Hope it helps ❤

6 0
4 years ago
Read 2 more answers
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