Grade 7 math preap | semester 1
1. gwendolyn placed a 10-foot ladder against the side of her house so that the base of the ladder was 3 feet
from the base of the house, as shown in the diagram below.
10 ft
d
uit
which measurement in feet is closest to d, the distance from the top of the ladder to the ground? [8.7c]
a. 10.4 ft
b. 7.0 ft
c. 6.5 ft
d. 9.5 ft

What is the number 321,000,000 in scientific notation? also what is the number? ?

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1