what times 3 equals 20

Related Questions

• use the equation S=n(n+1) to find the sum of consecutive even numbers through 40
• Lamonte has 80 cents, Maggie has 3/4 of a dollar Gus is has two dimes and a nickle, and beau has six six dimes. Who has the most money?
• A researcher wants to estimate the average systolic blood pressure of female college students to within 2 points with 90% confidence. To determine the sample size required, she needs to know the population standard deviation, which is 4.8. Here are the steps to calculate the sample size: 1. Determine the z-value corresponding to a 90% confidence level. For a 90% confidence interval, the z-value typically used is 1.645 (this can be found in z-tables or through statistical software). 2. Use the formula for calculating the sample size for estimating a mean with a known standard deviation: \( n = \left( \frac{z \cdot \sigma}{E} \right)^2 \) Where: - \( n \) is the sample size. - \( z \) is the z-value corresponding to the desired confidence level. - \( \sigma \) is the population standard deviation. - \( E \) is the desired margin of error. 3. Plug the values into the formula: \( n = \left( \frac{1.645 \cdot 4.8}{2} \right)^2 \) \( n = \left( \frac{7.896}{2} \right)^2 \) \( n = (3.948)^2 \) \( n \approx 15.586 \) 4. Since the sample size must be a whole number, round up to the nearest whole number to ensure the desired confidence level is maintained. Rounding up gives you: \( n = 16 \) So, the researcher should select a sample size of 16 female college students to estimate the average systolic blood pressure within 2 points with 90% confidence.
• (8.4 times 10 to the 2 power)(2.5 times 10 to the 6 power)
• what is the answer to 8y^2+30y+13
• Factor completely x8 − 625. (x4 − 25)(x4 + 25) (x2 − 5)(x2 + 5)(x4 − 25) (x2 − 5)(x2 − 5)(x4 − 25) (x2 − 5)(x2 + 5)(x4 + 25)
• How to write an equivalent ratio for 9 over 27 without using a multiplication table
• compared the decimals 66.10, 21.10, and 66.11. which is greater
• Solve for z: -4.75 = z/2 z = ?
• The cash register at the ice cream store started the day with $120. During the day, the store earned $56 selling ice cream. The manager also paid for a delivery out of the cash register. At the end of the day, the cash register had $141. How much did the delivery cost?' Urgent please help!! Thanks!