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alexgriva [62]
3 years ago
9

Please help! Select one: a. $1.78 b. $0.85 c. $2.64 d. $6.32

Mathematics
1 answer:
Marina86 [1]3 years ago
8 0
10-(2*1.89+3*1.79)=10-(3.78+5.37)=10-9.15=0.85
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Please help please <br><br> -2x - x + 8 = ?
nataly862011 [7]

Answer:

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Step-by-step explanation:

Simplify. combine like terms (terms with the same amount of variables).

Subtract -2x and x: -2x - x = -3x

-3x + 8 is your answer.

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3 years ago
14=8+4y , what's y ?​
Sergio [31]

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timurjin [86]

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4 0
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Factorise polynomial<br> 27y3 + 125z3<br><br>​
tresset_1 [31]

Answer:

27y^{3} +125z^{3} =(3y)^{3} +(5z)^{3}

Apply the formula for sum of cubes: a^{3}+b^{3}=(a+b)(a^{2}-ab+b^{2})

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6 0
3 years ago
What is the volume of a sphere with a radius of 2 cm? use 3.14 for π. round to the nearest hundredth, if needed?
adoni [48]
So the formula of the volume of a sphere is V= \frac{4}{3} *3.14*r^3

Just plug in 2 in the r variable and solve:

V=\frac{4}{3} *3.14*2^3 \\ V=\frac{4}{3} *3.14*8 \\ V=\frac{4}{3} *25.12 \\ V=33.49

Your volume is 33.49 cm^3
6 0
3 years ago
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