3 years ago

Simplify ( 5w + 13 ) + ( 2w + 1)

Mathematics

2 answers:

Drupady [299]3 years ago

8 0

Answer:

7w+14

Step-by-step explanation:

Vadim26 [7]3 years ago

6 0

Answer:

10w^2 + 24w + 13

Step-by-step explanation:

use Foil method

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Choose the correct simplification of the expression (−2x + 4y)(3x − 7y).

Rudik [331]

-2x • 3x = -6x2 (the 2 is an exponent)
4y • -7y = -28y2 (the 2 is an exponent)
-2x • -7y = 14xy
4y • 3x = 12xy
14xy + 12xy = 26xy

—> -6x2(expo) - 28y2(expo) + 26xy

Check the answer again just to be sure, it’s been a while since I’ve had algebra!

3 0

3 years ago

The average score of 100 students taking a statistics final was 70 with a standard deviation of 7. Assuming a normal distributio

san4es73 [151]

Answer:

74.72

Step-by-step explanation:

Given

mean $\left ( \mu \right )=70$