Answer:
x = 7
Step-by-step explanation:
Step 1. Combine like terms for simplification
x + 2 = 2x - 5
Step 2. Subtact 2 from both sides
x = 2x - 7
Step 3. Subtract 2x from both sides
-x = -7
Step 4. Divide it all by -1 to isolate the variable.
x = 7
The answer is just 24.3 miles.
The questions asked "How long was the ride from Kiley's house to the airport?"
The first sentence of the problem reads "They drove 24.3 miles from their house to the airport in an hour". The rest of the information isn't necessary to find this answer.
I can give you the answers; making you understand is a taller order.
1. Given
Proofs usually start with the givens
2. Corresponding Angle Theorem
Two sides of the triangle are transverses to parallel lines so each generates congruent angles.
3. AA (angle angle) Similarity Theorem
If a pair of triangles has two congruent pairs of angles, the third pair is congruent as well and the triangles are similar.
4. Corresponding sides of similar triangles are proportional
All the linear dimensions in a similar triangle are scaled by the same factor.
5. Segment Addition Postulate
This one is so basic sometimes it's not even mentiond. But it's really important. When we have a segment with a distinguished point dividing it into two shorter segments, the length of the whole is the sum of the lengths of the two parts.
6. That's the algebra one, (a+b)/c=a/c+b/c
It basically says we can add fractions with a common denominator by adding their numerators.
7. Subtract 1 ...
More algebra rules
8. Take reciprocals
More algebra
Answer: C. The graph crosses the x-axis at x=-2 and x=1 & touches the x-axis at x=0
Step-by-step explanation:
You can tell this by factoring the equation to get the zeros. To start, pull out the greatest common factor.
f(x) = x^4 + x^3 - 2x^2
Since each term has at least x^2, we can factor it out.
f(x) = x^2(x^2 + x - 2)
Now we can factor the inside by looking for factors of the constant, which is 2, that add up to the coefficient of x. 2 and -1 both add up to 1 and multiply to -2. So, we place these two numbers in parenthesis with an x.
f(x) = x^2(x + 2)(x - 1)
Now we can also separate the x^2 into 2 x's.
f(x) = (x)(x)(x + 2)(x - 1)
To find the zeros, we need to set them all equal to 0
x = 0
x = 0
x + 2 = 0
x = -2
x - 1 = 0
x = 1
Since there are two 0's, we know the graph just touches there. Since there are 1 of the other two numbers, we know that it crosses there.
Answer:
i dunno try 400?
Step-by-step explanation:i hope this works=p
