Answer:
630
Step-by-step explanation:
(-21) × (-30)
21×30 Since 2 negatives multiplied to make a positive
Answer is 630
F(x) = 3(2)^(x − 2)<span> + 4</span>
Answer:
NOT found in obtuse triangles
Step-by-step explanation:
you only talk about hypotenuse, adjacent, and opposite in right triangle
Answer:
Identity property of multiplication
Step-by-step explanation:
From step 5:

Here, to solve for x so that the variable x stands alone, Alberto uses the identity property of multiplication, which justifies what he has in step 6.
Step 6:

According to the identity property of multiplication, any value you multiply by 1 gives you that same value.
Therefore, 1x = 1 × x = x.
The variable x multiplied by 1 will give you x.