Answer:
1480
Step-by-step explanation:
26 / 7 is 3.7. 2 x 3.7 = 7. 400 x 3.7 = 1480
Answer:
2
−
9
x
Step-by-step explanation:
Don't you mean "the sum of the squares ..."?
The sum of the squares of two consecutive whole numbers is 25. Find the numbers. Let the first be represented by x and the second by x+1.
Then x^2+(x+1)^2=25. Expanding, x^2+x^2+2x+1=25.
Rewriting this as a quadratic equation in standard form,
2x^2+2x+1=25, or 2x^2+2x-24=0. Simplifying, x^2+x-12=0.
Factoring, (x-3)(x+4)=0. Solving for x: x-3=0, so x=3; x+4=0, so x=-4.
Choose the positive x value: x=3. Then the next consecutive number is 2+1=3+1=4.
Check: Does 3^2 + 4^2 = 5^2 = 25? Yes.
The numbers are 3 and 4.
Answer:
Step-by-step explanation:
The domain of a function is the set of input values that the function can take.
There are no restrictions on the value of x.
The domain of the function is all real numbers.
Answer:
20
Step-by-step explanation:
1. substitute x for (4)
2. multiply 5(4)
3. The answer is 20
