If im not mistaking it may be 25
An x intercept is where you have a point on the graph where y = 0, in othet words if you look at the graph, any points on the horizontal line going across the center: (x-axis), One way to show x intercepts is by actually showing the graph and circling where these points are, another, is to simplify the equation and find all of the x's when y is equal to zero. In this problem, there should only be 1. First I would replace g(x) with zero, so its 0 = -x^3+27 and subtract 27 on both sides: -27=-x^3, then divide by negative one on both sides to get rid of the negative in front of the x: 27=x^3, and now just cube root both sides, x^3 cubed is x and 27 cubed is 3, so your only x-intercept is 3
Answer:
Step-by-step explanation:
The area of an isoceles triangle is:
A = base x height / 2
The base is the unequal side in the isosceles triangle. You have to calculate the height using the Pythagorean Theorem.
Since two side are equal in length, if you draw a vertical lined from where these two sides meet and bisect the base, you will create two right triangles.
So a² + b² = c² where c is the hypotenuse of the right triangle. This hypotenuse is also the two equal sides of the isosceles triangle. They told you the length of the base but you need to divide that in half since your line bisected the base.
So now you know one side of the right triangle is 8cm which is half of 16cm. You also know the hypotenuse is 17cm. Solve the Pythagorean Theorem for the other side and that will give you the height of your bisecting line.
8² + b² = 17² OR 64 + b² = 289
Solve for b
b² = 289 - 64 OR b² = 225 and finally b = which is 15
So now you can calculate the area of the triangle:
A = 16 x 15 / 2 or 240 / 2 which is 120
So the area is 120 cm²
Answer:
£16:£144
Step-by-step explanation:
1+9=10
160/10=16
1×16=16
9×16=£144