I need help with this math problem

Mathematics

1 answer:

dimaraw [331]3 years ago

7 0

Choice J both prices are per a unit

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What is the area of rhombus ABCD ?

Zina [86]

check the picture below.

so, notice there, the rhombus is really just two triangles, each triangle has a base of 4 units and a height of also 4 units, so simply let's get the area of a triangle and multiply that times 2.

$\bf \stackrel{\textit{area of 2 triangles}}{2\left[\cfrac{1}{2}(4)(4) \right]}\implies 16$

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3 years ago

In a poll, 37% of the people polled answered yes to the question "Are you in favor of the death penalty for a person convicte

Nimfa-mama [501]

Answer:

2239

Step-by-step explanation:

Given-

Percent of peopl polling yes to the question "Are you in favor of the death penalty for a person convicted of murder?" $= 37$ %

Margin error in the poll $= 2$ %

Confidence Interval $= 95$ %

The alpha value is $1 -0.95 =0.05$

The $z_\frac{\alpha }{2}$ for Confidence Interval of $95$ % $= 0.196$

The sample size is given by

$n = p*q*(\frac{z}{e} )^2$

Where,

$p = \frac{37}{100} = 0.37 q = 100-0.37 = 0.63 e =2/100 = 0.02 z = 1.96 (critical value)n = p*q*(\frac{z}{e} )^2 = 0.37 * 0.63(\frac{1.96}{0.02} )^2 \\n = 2238.69\\n= 2239$