Answer:
A: positive B: Negative C: Positive
Step-by-step explanation:
<span>It doesn't matter that she guessed correctly on the first two questions, guessing the third question correctly is independent of guessing any other question correctly. Therefore, the probability is one out of four, 1/4.</span>
Answer:
Andre.
Step-by-step explanation:
Andre's group was asked to write an expression equivalent to 5p²q + 7pq² - 10.
Andre gives the expression 7p²q + 7pq² - 1 - 2p²q - 9, which gives the expression 5p²q + 7pq² - 10.
Jill gives the expression 5p²q + 2 pq² - 6 + 5pq² - 3, which does not give the expression 5p²q + 7pq² - 10.
Now, Anuj gives the expression 4p²q + 7pq²- 7 + 2p²q - 3, which also does not give the expression 5p²q + 7pq² - 10.
Again, Marsha gives the expression 5p²q + 5 pq²- 10 + 3pq², which also does not gives the expression 5p²q + 7pq² - 10.
Hence, only Andre gives the correct expression. (Answer)
Answer:
4 and 5
Step-by-step explanation:
Step-by-step explanation:
2x2=4
2x2+.5x2=5
Answer:
see explanation
Step-by-step explanation:
you are looking for perfect square factors of the numbers under the radical sign. both numbers and the sum are irrational because they contain √5
125 = 5×25
80 = 5×16
<em>3</em>√125 =<em> 3</em>√(25×5) = <em>3</em>×5√5 = 15√5
√80 = √(16×5) = 4√5
1) 15√5 + 4√5 = 19√5 the √5 is the same square root so you add the coefficients
perfect square factors are bold
4×√(25×2)×√(9×2) =
4×5×3×√(2×2) =
60×√4 =
2) 60 × 2 = 120
the numbers are both irrational but the answer is rational because √2 ×√2 = √4 = 2
