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topjm [15]
3 years ago
11

Simplify the following expression (3x-5)(4-9x)+(2x+1)(6x^2+5)

Mathematics
1 answer:
timama [110]3 years ago
6 0
Expand out the brackets and simplify, largest indices first.
12x³-21x²+67x+30
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a cone has a volume of 6 cubic inches. what is the volume of a cylinder that the cone fits exactly inside of
ella [17]

Answer:

= 18 cubic inches

Step-by-step explanation:

The volume of a cone is given by the formula;

V = 1/3 × base area × height

While that of cylinder is given by the formula;

Volume = Base area × height

Since we need the cylinder to fit exactly inside the cone, then it  means that their bases are the same and heights are the same.

Therefore;

The cone has three times less volume compared to the cylinder.

Thus;

Volume of the cylinder = Volume of cone × 3

                                       = 6 In³ × 3

                                       <u>= 18 cubic inches</u>

5 0
3 years ago
1. simplify radical expression. <br> please and thank you
gayaneshka [121]

Answer:

option number 2 should be the answer if I'm wrong I'm mega sorry not that  great at math. :>

3 0
3 years ago
Find the midpoint of NP⎯⎯⎯⎯⎯ given N(2a, 2b) and P(2a, 0).
geniusboy [140]

Answer:

(2a, b )

Step-by-step explanation:

Given the endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is

[ \frac{1}{2}(x₁ + x₂ ), \frac{1}{2}(y₁ + y₂ ) ]

Here (x₁, y₁ ) = N(2a, 2b) and (x₂, y₂ ) = P(2a, 0), thus

midpoint = [ \frac{1}{2}(2a + 2a), \frac{1}{2}(2b + 0 ) ] = (2a, b )

4 0
3 years ago
Helllp please <br> Find the area of The following figures. Dimensions are in centimeters.
lukranit [14]

Answer:

\huge\mathfrak\red{Answer...} \\  \\ area \: of \: square \:  = side {}^{2} \\  \\  side = \: 6 \: cm   \\  \\ area \: of \: square \:  = 6 \times 6 \\  \\ area \: of \: square \:  = 36 \: cm.sq \\  \\ area \: of \: semicircle \:  = (1 \div 2)\pi \: r {}^{2}  \\  \\ radius = 2 \: cm \\  \\ area \: of \: semicircle = 6.28 \: cm.sq \\  \\ area \: of \: whole \: figure \:  = 36 + 6.28 \\  \\ area = 42.28 \: cm.sq

5 0
2 years ago
Read 2 more answers
Diana ,and Jennifer and Christina are making class for the craft fair Diana has made three tenths of her Jennifer has made Two f
Sladkaya [172]
A- Christina
B-Diana
4 0
3 years ago
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