3 years ago

Help please! Giving away brainliest.

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

3 0

Answer:

triangle

A=bh/2

=2cm×4cm/2

=8cm^2/2

=4cm^2

square

A=s^2

=2cm×2cm

=4cm^2

You might be interested in

Which statement best explains how to find the area of the kite?

eimsori [14]

I think it is a D I'm not really sure

3 0

2 years ago

The mean sat verbal score is 486, with a standard deviation of 95. use the empirical rule to determine what percent of the score

Pavel [41]

Find the z-scores for the two scores in the given interval.

$z=\frac{x-\mu}{\sigma}$

For the score x =391, $z=\frac{391-486}{95}=\frac{-95}{95}=-1$ .

For the score x = 486, $z=\frac{486-486}{95}=0$

Now you want the area (proportion of data) under the normal distribution from z = -1 to z = 0. The Empirical Rule says that 68% of the data falls between z = -1 to z = 1. But the curve is symmetrical around the vertical axis at z = 0, so the answer you want is HALF of 68%.