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lukranit [14]
3 years ago
12

-10.6 x -8.05 = ? (need help!!)

Mathematics
1 answer:
andrey2020 [161]3 years ago
3 0

Answer:

85.33

Step-by-step explanation:

-10.6 x -8.05 = 85.33

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A cone of base 10 cm^2 and a height of 60 cm has what volume?
Temka [501]

Answer:

200

Step-by-step explanation:

6 0
3 years ago
What is the product of (3x-9) and 6x↑2-2x+5 Write your answer in standard form.
klio [65]

Answer:

a. 18x^3 -60x^2 + 33x - 45

b. No

Step-by-step explanation:

Given:

(3x-9) and 6x^2-2x+5

=> the production of them is:

(3x-9)(6x^2-2x+5) , we will use distributive law to solve this To do that. we first multiply  6x^2-2x+5 by 3x then by -9. This is done as follows

= 3x (6x^2-2x+5) - 9(6x^2-2x+5)  = (3x * 6x^2-3x * 2x+3x *5) - (9* 6x^2-9* 2x+9* 5)\\\\= (18x^3 -6x^2+ 15x) - (54x^2 - 18x +45)

Then Open both brackets

= 18x^3 -6x^2+ 15x -54x^2 + 18x -45

After that, we group the same terms

= 18x^3 -(6x^2 +54x^2)+ (15x  + 18x) -45

= 18x^3 -60x^2 + 33x - 45

(b) Is the product of (3x-9) and  6x^2-2x+5  equal to the product of (9x-3) and 6x^2-2x+5

No, let find the product of (9x-3) and 6x^2-2x+5 , we will use distributive law to solve this as the above example.

= (9x-3)(6x^2-2x+5)

= 9x (6x^2-2x+5) - 3(6x^2-2x+5)

=(9x * 6x^2 - 9x * 2x + 9x *5) - (3* 6x^2 - 3 * 2x + 3* 5)

= (54x^3  - 18x^2+ 45x) - (18x^2 - 6x +15)

After that, we open the bracket to find the same terms

= 54x^3  - 18x^2+ 45x -18x^2 + 6x -15

= 54x^3  - 18x^2 -18x^2 + 45x  + 6x -15

= 54x^3  - 36x^2 + 51x  -15  

As you can see 54x^3  - 36x^2 + 51x  -15   ≠18x^3 -60x^2 + 33x - 45

Hope it will find you well.

3 0
4 years ago
In a theatre seats are arranged in rows. A teacher took her team of 50 students to the theatre for a field trip.there are 6 rows
lord [1]
48*465=8462*585655*446=745
7 0
3 years ago
In a local ice sculpture contest, one group sculpted a block into a rectangular based pyramid. The dimensions of the base were 3
Natasha_Volkova [10]

Answer:

87.6m²

Step-by-step explanation:

From the above question, we are given the following information

The dimensions of the base were 3 m by 5 m:

Length = 3m

Width = 5m

The pyramid was 3.6 m high

Height = 3.6m

To calculate the amount of ice needed for this sculpture, we would have to find the Surface Area of the Rectangular Prism

This is calculated as:

Surface Area =2(wl+hl+hw)

= 2(3 × 5 + 3.6 × 3 + 3.6 × 5)

= 2(15 + 10.8 + 18)

= 2(43.8)

= 87.6m²

The amount of ice needed for this sculpture is 87.6m²

6 0
3 years ago
Which expression is not a polynomial
icang [17]

Hello from MrBillDoesMath!

Answer:

The last choice x^2 - x^(1/2) + 2

Discussion:

The last choice x^2 - x^(1/2) + 2 is NOT a polynomial because of the sqrt(x) term

Thank you,

MrB

8 0
4 years ago
Read 2 more answers
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