A proportion is two ratios equivalent to each other
Answer:
x=-14
Step-by-step explanation:
-x-11^2+1
-x-11^3
-x^14
x=-14
Sorry, I am not sure but it is either A. 28% or B. 22%
Answer:
In this family there are 5 girls and 2 boys
Step-by-step explanation:
Fred has five times as many sisters as brothers, so at least he has five sisters.
1. Let's suppose Fred has just one brother, in this case he would have five sisters (including Amanda). The condition that Fred has five times as many sisters as brothers is fufilled.
2. If Fred has one brother, it means that Amanda has two brothers
3. If Fred has five sisters (including Amanda), it means that Amanda has four sisters.
4. If Amanda has two brothers and four sisters, the condition that she has twice as many sisters as brothers is fufilled.
5. Then, in both cases, there are 5 girls and 2 boys:
Fred + 1 brother + 5 sisters = 2 boys, 5 girls
Amanda + 2 brothers + 4 sisters = 2 boys, 5 girls
Answer:
Step-by-step explanation:
First, what's a polynomial? It's an algebraic expression whose only independent variable is x, and in which all the x powers are either zero or positive and are integers: x^3, x^2, x^1, x^0 (for example).
Looking at possible answer choice A, we immediately reject this because that power of x is in the denominator, representing 2x^(-3). This negative power of x is not allowed. Reject A.
In B, we have the powers x^2, x^1 and x^0. Great. This is a polynomial.
In C, we have x^2 + 1 in the denominator of the final fraction. Reject this because of the final term.
In D, we have x^2 + 2x + √