Answer:
x = 19.
Step-by-step explanation:
By the tangent - secant theorem:
BD^2 = AB * EB
so:
8^2 = (x - 7 + 4) * 4
4(x - 3) = 64
4x - 12 = 64
4x = 64 + 12 = 76
x = 76/4
= 19.
Answer:
AC and AE
Step-by-step explanation:
Those are the only secants in the image shown.
Answer:
a. 3/2.
b. (0, 2).
Step-by-step explanation:
a. 2y = 3x + 4 Divide through by 2:
y = 3/2 x + 2
Comparing this to the general form y = mx + c where m = the gradient we see that the gradient = 3/2.
b. When the line crosses the y-axis x = 0 so we have the equation:
2y = 3(0) + 4
2y = 4
y = 2.
So the required point is (0, 2).
Answer:
8.75
Step-by-step explanation:
the formula to use would be:
$325 = 40x - 25
add 25 to both sides of the equation to get:
$350 = 40x
divide both sides by 40 to get:
x = 350/40 = $8.75
if they charge $8.75 per car, they will raise 40 * that for a total of $350.
they would then subtract the $25 for the cost of the supplies and they would be left with $325.
that's their minimum goal.
Conditional frequency:A two-way table (also called a contingency table) is used to examine relationships between categorical variables. ;-;