The answer is D. All you have to do is graph the equation, and you will have the vertex and the roots. By the way, you can rule out B and C because those two do not follow the rules of a quadratic. Also, A and B have the wrong axis of symmetry, because the rocket lands after 10 seconds.
a.yes
Step-by-step explanation:
a.angle BCD =b because angle BCD is alternate angle of angle ABC
b.the two angles angle BAC and angle ACD is co-interior angle because they are inside a parallel line
7/20 barrels of corn are the buffalo fed each day.
How to solve word problems?
It's actually fairly easy to solve word problems using a tried-and-true step-by-step approach.
- Aloud to yourself, read the issue.
- Make a Drawing.
- Ask yourself, "What am I looking for?"
- List the items that have been provided.
- Locate the key phrases.
- Solve.
- Verify your work.
Here are some actions to take:
- Recognize the issue, including all the terminology used to describe it. Recognize what you need to look for, Recognize the issue's context.
- Convert the issue into an equation. Give the unknown a variable (or variables) to symbolize, Indicate exactly what the variable stands for.
- Put the strategy into action and find a solution.
Given:
Elephants at the Norfolk zoo are fed = 1/2
Buffalo are fed 7/10 as much corn as the elephants = 7/10 * Elephants fed
= 7/10 * 1/2
= 7/20
Hence, 7/20 barrels of corn are the buffalo fed each day.
To know more about word problems check the below link:
brainly.com/question/13818690
#SPJ4
Answer:
112
Step-by-step explanation:
The general form of all percentage questions is: the chunk= (some percentage) (of the whole), or c=p*w
We know that 18% of students are 8th grade and that is 126 students, so p = 0.18 and c=126 (126 students are 18% of the whole school)
126 = (0.18)w, divide both sides by 0.18
126/(0.18) = w = 700
9th graders are 16% of the school or 16% of 700 students
c = (0.16) 700 = 112 students
