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Helen [10]
3 years ago
5

Evaluateeee????????????

Mathematics
2 answers:
andreev551 [17]3 years ago
8 0
The answer is 15. just replace the letters with the numbers they're equal to.
amid [387]3 years ago
4 0
3x^2 - 2xy + 4y^2 ; x = -1 , y = -2
3(-1)^2 - 2(-1)(-2) + 4(-2)^2
3(1) - 4 + 16
3 - 4 + 16
-1 + 16
15

The answer is c) 15
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I need help to solve please
antiseptic1488 [7]

Answer:

<h2><em><u>x = 52</u></em></h2>

Step-by-step explanation:

<em><u>Known:</u></em>

What to find = x

Exterior angle = 142

Right angle = 90

<em><u>Unknown:</u></em>

what unknown value is = ?

Interior angle = ?

<em><u>1. Find the angle of the interior angles.</u></em>

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<em><u>2. Add the two known angles</u></em>

38 + 90 = 128

<em><u>3. Subtract from 180</u></em>

180 - 128 = 52

<h2><em><u>x = 52 is the answer.</u></em></h2>

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Kavitha Banarjee

6 0
3 years ago
Please help i have a test and this is the only question im stuck on 30 points
tia_tia [17]
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Wisdom scores n marks in a test. a. Antonio scores 2 marks less than wisdom. Write down an expression for Antonio's mark in term
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