If f(x)=4x+8 find f(5) f means function

A screening of 1,250 teenage boys shows 15 have high blood pressure. What is the probability a teenage boy will have high blood

Lyrx [107]

To find this just divide 15 by 1250 and get 0.012
to find the percent just multiply 0.012 by 100 : 1.2%
the answer is 1.2%

4 0

3 years ago

The sum of two numbers is 23, and one half their product is 65. What are the numbers?

zysi [14]

It’s 13 and 10. Since half of the product is 65 when it’s doubled you have 130, so basically you just to trial and error to get two numbers that add to 23 but multiple to get 130

6 0

3 years ago

Two consecutive numbers whose squares differ by 25

yaroslaw [1]

An example of this might be 7 and 8. 7 multiplied by 7 to find the square root is 59, and 8 multiplied by 8 to find the square root is 64. 64 subtract 49 equals 25, so there you have your answer.

6 0

4 years ago

Please help Ladder question!!

PIT_PIT [208]

Answer:

Step-by-step explanation:

This is a related rates problem from calculus using implicit differentiation. The main equation is going to be Pythagorean's Theorem and then the derivative of that. Pythagorean's Theorem is

$x^2+y^2=c^2$ where c is the hypotenuse and is a constant. Therefore, the derivative of this with respect to time, and using implicit differentiation is

$2x\frac{dx}{dt}+2y\frac{dy}{dt}=0$ and dividing everything by 2 to simplify a bit:

$x\frac{dx}{dt}+y\frac{dy}{dt}=0$ . Upon analyzing that equation, it looks like we need values for x, y, $\frac{dx}{dt}$ , and $\frac{dy}{dt}$ . And here's what we were given: