Answer:
The answer is 27
Step-by-step explanation:
The reason being, you can solve this 2 ways.
1) Combine like terms, 7a-4a = 3a.
Now just substitute (a=9) into 3a.
3 * (9) = 27.
2) Or just substitute a = 9 into the original expression.
7 * (9) - 4 * (9)
= 63 - 36 = 27
"Nina and Ryan each ran at a constant speed for a 100-meter race. Each runner’s distance for the same section of the race is displayed..." Ryan had a head start of 10 meters.
This is further explained below.
<h3>Who had a head start, and how big was the head start?</h3>
Generally, To help low-income children and their families, the United States government funds a program called Head Start, which offers a variety of services including early childhood education, health care, nutrition education, and parent engagement.
In conclusion, who had a head start, and how big the head start was is; Ryan had a head start of 10 meters.
Read more about distance
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Right triangle means:
sin, cos, and tangent
Here, we can see that:
sin 35° =
Simplify.
20sin 35° = x
Multiply 20 by sin of 35 degrees.
x = 11.47(ROUNDED)
Answer: Choice C
