Step-by-step explanation:
Let the required number be x.
According to the given information:
Hence the required number is 31.
1,000 because kilometers is 1,000 is how many is for 2 but for one it's 500
D.The puppy gains approximately 0.25 pound each week.
<u>x = no. of weeks</u> in f(x) = 0.25x + 1.2
Answer:
Option B is the correct choice.
Step-by-step explanation:
The graph is attached below.
We have to find the intercept meaning the value of the point on when
So we will put the value of zero instead of in our given equation.
So here we have solved it algebraically.
Putting
Multiplying both sides.
Adding both sides.
Dividing with both sides.
So the x-intercept of the given equation is which can be written as in terms of coordinates.
Option B is the correct choice.
The diagonal of a rectangle = sqrt(w^2 + l^2)
w = width
l = length
In this problem,
The diagonal = 20 in
w = x
l = 2x + 8
Let's plug our numbers into the formula above.
20in = sqrt((x)^2 + (2x + 8)^2)
Let's simplify the inside of the sqrt
20 in = sqrt(5x^2 + 32x + 64)
Now, let's square both sides.
400 = 5x^2 + 32x + 64
Subtract 400 from both sides.
0 = 5x^2 + 32x - 336
Factor
0 = (5x - 28)(x + 12)
Set both terms equal to zero and solve.
x + 12 = 0
Subtract 12 from both sides.
x = -12
5x - 28 = 0
Add 28 to both sides.
5x = 28
Divide both sides by 5
x = 28/5
The width cant be a negative number so now we know that the only real solution is 28/5
Let's plug 28/5 into our length equation.
Length = 2(28/5) + 8 = 56/5 + 8 = 96/5
In conclusion,
Length = 96/5 inches
Width = 28/5