Let x be the population distribution.
p(25 ≤ x ≤ 33) = p((25 - 29)/4 ≤ z ≤ (33 - 29)/4) = p(-1 ≤ z ≤ 1) = p(z ≤ 1) - p(z ≤ -1) = p(z ≤ 1) - [1 - p(z ≤ 1)] = 2p(z ≤ 1) - 1 = 2(0.84134) - 1 = 0.68268 = 68%

p(21 ≤ x ≤ 25) = p((21 - 29)/4 ≤ z ≤ (25 - 29)/4) = p(-2 ≤ z ≤ -1) = p(z ≤ -1) - p(z ≤ -2) = [1 - p(z ≤ 1)] - [1 - p(z ≤ 2)] = p(z ≤ 2) - p(z ≤ 1) = 0.97725 - 0.84134 = 0.13591 = 13.5%

7 0

4 years ago

Measure of angle CXF

AnnyKZ [126]

50°

angle CXF and DXF are complementary which means they add to 90°

to 40° + x = 90
x = 50

5 0

3 years ago

Change to a decimal: 14 1/2 %. 0.145 0.0145 14.5

bearhunter [10]

The answer is 0.145
14 1/2 can be expressed as:
 $14 \frac{1}{2} = 14+ \frac{1}{2} =14+ \frac{1*5}{2*5} = 14+ \frac{5}{10} = 14 + 0.5 = 14.5$

Since we know that x% is x/100, then 14 1/2 % can be expressed as:
14 1/2% = 14.5% = 14.5/100 = 0.145

8 0

3 years ago

Read 2 more answers

Answer BOTH questions please!

LuckyWell [14K]

Answer:

9.53939201

Yes I did have a good Valentines thx for asking

8 0

3 years ago