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Marat540 [252]
3 years ago
5

Evaluate the following expression: 3y2 - 4x + 2xy, when x = 2 and y = 5

Mathematics
1 answer:
Trava [24]3 years ago
8 0

Answer:

<h2><em><u>87</u></em></h2>

Step-by-step explanation:

<em>3×(5)^2 - 4×2 + 2×2×5</em>

<em>3×(5)^2 - 4×2 + 2×2×53×25 - 8 + 20</em>

<em>3×(5)^2 - 4×2 + 2×2×53×25 - 8 + 2075 + 20 - 8 </em>

<em>3×(5)^2 - 4×2 + 2×2×53×25 - 8 + 2075 + 20 - 8 95-8</em>

<em>3×(5)^2 - 4×2 + 2×2×53×25 - 8 + 2075 + 20 - 8 95-887</em>

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(HELP ME FAST!!)
love history [14]

Answer:

8 1/3

Step-by-step explanation:

the product of -2 1/2 and -3 1/3

-2 1/2 x -3 1/3 = 8 1/3

6 0
3 years ago
Read 2 more answers
What is 10% off £1.80?
frosja888 [35]
To find 10% you divide the amount by 10 so £1.80 dived by 10 is 0.18p. Therefore you want 10% OFF that amount so you do £1.80-0.80p and you are left with £1.00.
4 0
3 years ago
Read 2 more answers
The answer to number 3
olga55 [171]
3x^2 + 3x - 6

First factor out the 3 in front of x^2:

3( x^2 + x - 2 )

Now we can look at the inside of the brackets, and find two numbers that, when multiplied, give -2, and when added, give +1. You will usually find them if you create a list of factors of the constant term (-2 in this case).

2 * -1 = -2
2 + -1 = 1

So the factorization becomes 3(x+2)(x-1)
3 0
3 years ago
WILL GIVE BRAINLIST AS SOON AS I CAN I've also never seen this question before either?? Very confused.
shepuryov [24]

Answer:

0.360  %  or 40%

Step-by-step explanation:

Area circle = 50.27 (50)

Area square = 32.3 (32)

Area circle minus area square  = 50.27-32.3= 17.97 (18)

    18/50 = 9/25 = 0.36

6 0
4 years ago
Please help me emergency
CaHeK987 [17]

Answer:

A = -1 6/8

B = -1 2/8

C = -0.5

D = 1

E = 1 5/8

Assuming that the points are left from right (a point -> b point -> c point -> d point -> e point) cause I cant see the points names. Hope this helps


7 0
4 years ago
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