An architect planned to construct two similar stone pyramid structures in a park. The figure below shows the front view of the pyramids in her plan, but there is an error in
the dimensions:
7.5 ft
6 ft
2.5 ft
3 ft
B
R
10.5 ft
3.5 ft
Which of the following changes should she make to the length of side AB to correct
her error? (6 points)
1) Change the length of side AB to 2 feet
2) Change the length of side AB to 8 feet
3) Change the length of side AB to 1 foot
4) Change the length of side AB to 4 feet

1. Change the length of side AB to 2 feet

Step-by-step explanation:

Since both stone pyramid structures are to be similar, the ratio of their corresponding side lengths must be equal. That is:

Since it is said there was an error in side AB, let's assume AB is unknown.

Use the following to find the length of side AB that would be used if she is to make the correction:

PR = 7.5

AC = 2.5

PQ = 6

AB = x

Plug in the values

Cross multiply

Divide both sides by 7.5

AB = x = 2

Therefore, she should change the length of side AB to 2 feet.

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

i think is g(1)=-1.

hope that i can