Answer:
Has your teacher given you notes to practice?
Step-by-step explanation:
If no, then break the question down into pieces and write down what you know.
Solution:
<u>We know that:</u>
- Perimeter of rectangle = 2L + 2B
<u>Given:</u>
<em>Substitute the values into the expression to find the perimeter.</em>
- Perimeter of rectangle = 2L + 2B
- => 2(9) + 2(5)
- => 18 + 10
- => 28 cm
Answer:
3x + y = -10
Step-by-step explanation:
To solve this problem, we make use of the formula for
Confidence Interval:
Confidence Interval = X ± z * σ / sqrt (n)
where X is the mean value, z is the z score which is taken
from the standard tables, σ is the standard deviation, and n is the number of
samples
z = 1.645 (at 90% Confidence Level)
Substituting the values into the equation:
Confidence Interval = 94 ± 1.645 * 12 / sqrt (70)
Confidence Interval = 94 ± 2.36
Confidence Interval = 91.64, 96.36
Therefore at 90% confidence level, the blood pressure
reading ranges from 91.64 mmHg to 96.36 mmHg.
To find 30% of 32,000, first divide by 100 to find 1%, then multiply the result by 30 to find 30%:
