A scientist is measuring the temperature change in a chemical

compound. The temperature dropped 11 °F per hour from the

original temperature. After 4 hours, the temperature was

90 °F. Find the compound's original temperature.

The prices of three jacket styles are $42, $60 and $84 The probability of choosing a $42 jacket is 1/6 the probability of choosing a $60 jacket is 1/4 the probability of choosing an $84 jacket is 7/12 A) $71 B) $63 C) $62 D) $60

Eliza cannot decide which of two bicycles to buy. The original price of each is $380. The first is marked down by 50%. The second is marked down by 30% with an additional 20% off.

Why does a triangle have three sides if a pillow has four.

Kate ran 4200 meters in 30 minutes. How many meters did Kate run each minute?

What makes a sample random

If we take samples from normal populations and construct two confidence intervals (CI) for which the only difference is that one of them was at the 80% confidence level and the other was at the 90% level, which of the following statements is true?

In triangle ABC, angle B = 30°, a = 210, and b = 164. The measure of angle A to the nearest degree is a0

Raffey is upgrading his cell phone and monthly service plan check sell offers a new phone for $50 and unlimited service for a monthly fee of $40 cellular offers a new phone and unlimited service for a monthly fee of $50 after how many months were

June and Sushil win some money and share it in the ratio 1:4. June gets £14. How much did Sushil get?

Teachers at price middle school are planning a birthday party for the principal planners estimated that 42 slices of cake would be needed. In fact only 30 slices of cake were eating what was the error in estimate of how mucj cake was eaten?