1. If the ratio of dogs to cats is 7 to 3, this means... A. For every 7 cats, there is one dog.

C. For every 7 dogs, there is one cat.

B. For every 7 cats, there are 3 dogs.

D. For every 7 dogs, there are 3 cats.

D. For every 7 dogs, there are 3 cats.

Step-by-step explanation:

D

Step-by-step explanation:

for every seven dogs there are three cats

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5