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Tcecarenko [31]
3 years ago
13

CAN SOMEONE PLEASE HELP ME OUT?!

Mathematics
1 answer:
Artyom0805 [142]3 years ago
4 0
A. Perfect square trinomial: a²+2ab+b²=(a+b)²
B. Difference of perfect squares: a²-b²=(a-b)(a+b)
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In a game, a player earns 100 points for each question answered correctly and earns -30 points for each question answered incorr
REY [17]

The general expression is 130 x - 600 and total points scored by the player is 1220

A) Let the number of correctly answered questions be x.

∴ Number of incorrectly answered questions will be 20 - x.

+ 100 points is awarded for each question answered correctly while -30 points is awarded for each question answered incorrectly.

Thus, the general equation becomes

= 100x - (20 - x)(-30)

= 100x +30x - 600

= 130x - 600

Thus the general expression becomes 130 x - 600

B)  The player answers 14 questions correctly, thus x = 14

Substituting the value of x =14 in the general equation we get,

= 130(14) - 600

= 1820 - 600

= 1220.

Thus the total points scored by the player will be 1220

Learn more about Linear Equations here :

brainly.com/question/14989092

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6 0
1 year ago
The steps for adding mixed numbers with unlike denominators are very ____________
raketka [301]

Answer:

imma need my points back

Step-by-step explanation:

5 0
3 years ago
3b^2-4b+1=0 solve each equation with the quadratic formula
hjlf
First multiply 3 and the 1
Then simplify b^2-4b+3=0
Then divide both numbers by 3 (b-3/3)(b-1/3)=0
If it doesn’t go in even like the second term then bring it before the B
Then equal both terms to 0 and solve

7 0
3 years ago
Rewrite the expression with rational exponents as a radical expression.
SpyIntel [72]
I think it’s the last one but I’m not sure. Let me know if you get it right.
3 0
2 years ago
I NEED HELP ASAP!!
S_A_V [24]
(1,-1)
(-4,2)
(-2,1)
I believe these will work
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3 years ago
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