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Butoxors [25]
2 years ago
5

Simplify: (−12az2−2z3)+(−2a3+7a2z)−(−4a2z+8az2)

Mathematics
1 answer:
Setler [38]2 years ago
3 0

Answer:

\large{ \boxed{ \tt{ - 20a {z}^{2}  - 2 {z}^{3}  - 2 {a}^{3} + 11 {a}^{2} z }}}

- Please see the attached picture for full solution!:)

----------------- HappY LearninG <3 --------------

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A number of two digits is increased by 54 when the digits are reversed. The ten digits is three times the unit digit. Find the n
bija089 [108]

Let <em>n</em> be the unknown number. We can write it as

<em>n</em> = 10<em>a</em> + <em>b</em>

with <em>a</em> and <em>b</em> integers between 1 and 9 (either with positive or negative sign).

Reversing the digits gives another number

<em>m</em> = 10<em>b</em> + <em>a</em>

The first number is increased by 54 when the digits are reversed, which means

<em>m</em> = <em>n</em> + 54   →   10<em>b</em> + <em>a</em> = 10<em>a</em> + <em>b</em> + 54   →   9<em>b</em> - 9<em>a</em> = 54   →   <em>b</em> - <em>a</em> = 6

The digit in the tens place of <em>n</em> is 3 times the digit in the ones place, so

<em>a</em> = 3<em>b</em>

Substitute this into the previous equation and solve for <em>b</em> :

<em>b</em> - <em>a</em> = <em>b</em> - 3<em>b</em> = -2<em>b</em> = 6   →   <em>b</em> = -3

Solve for <em>a</em> :

<em>a</em> = 3<em>b</em> = 3(-3) = -9

Then the original number is <em>n</em> = 10<em>a</em> + <em>b</em> = 10(-9) + (-3) = -93

3 0
3 years ago
Read 2 more answers
A roulette wheel has 38 slots. a gambler will play roulette 50 times, betting a dollar on four numbers each time. if one of thes
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For 1 play, the chance of gaining $8 is 4/38, while the chance of losing the $1 is 34/38. Therefore, the expected value is ($8)(4/38) + ($-1)(34/38) = $(-1/19). Over 50 plays, which are mutually independent of each other, we multiply the number of plays by the expected value to get $(-50/19) = $-2.63.
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3 years ago
Circumference of 6cm ? help plz &lt;3 heyyy b a e (bet you won't reply :)
Naily [24]

Answer:

If r = 6 cm, the the circumference is c = 2π(6) = 12π cm

HOPE THIS HELPS AND PLS MARK AS BRAINLIEST

THNXX :)

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3 years ago
The degree of the polynomial p(y) =(y-4)^3-y^3 is<br><br>Plz urgent ​
Scilla [17]

Answer:

The degree of polynomial is 2

Step-by-step explanation:

Given

p(y) = (y -4)^3 - y^3

Required

The degree

When expanded,  p(y) = (y -4)^3 - y^3 is:

p(y) =y^3-12y^2+48y-64-y^3

Collect like terms

p(y) =-12y^2+48y-64-y^3+y^3

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4 0
3 years ago
Please help thank you
NeTakaya

Answer:

From the attached graphic, we can see:

(SP + PR) * PR = (WQ + QR) * QR

SP * PR + PR^2 = WQ * QR + QR^2

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SP = 49 / 4

SP = 12.25

Step-by-step explanation:

6 0
3 years ago
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