Joshua babysits for his sister after school. He is paid

Mathematics

2 answers:

Yakvenalex [24]3 years ago

7 0

Answer:

9 hrs

Step-by-step explanation:

Joshua has already saved $43.50 so you subtract $43.50 from 70 which leaves you with $26.50. Joshua still needs $26.50.

$26.50 divided by $3 per hr is 8.833 repeating. Obviously you can’t work 8.833 hrs so you round it up to 9. So, Joshua has to work for at least 9 hrs more.

Hope this helps :)

Darina [25.2K]3 years ago

4 0

The answer is 14.50. Hope that helped

You might be interested in

11. Write the equation of the line in slope-intercept form that is parallel to the line y = - 4x + 2 and

notsponge [240]

Answer:

y= -4x

Step-by-step explanation:

hope this helps and lmk if you need anything!

5 0

3 years ago

Let the region R be the area enclosed by the function f(x)=ln(x) and g(x)= 1/2x-2. Find the volume of the solid generated when t

Neporo4naja [7]

Answer:

$V=61.66$

Step-by-step explanation:

This problem can be solved by using the expression for the Volume of a solid with the washer method

$V=\pi \int \limit_a^b[R(x)^2-r(x)^2]dx$

where R and r are the functions f and g respectively (f for the upper bound of the region and r for the lower bound).

Before we have to compute the limits of the integral. We can do that by taking f=g, that is

$f(x)=g(x)\\ln(x)=\frac{1}{2}x-2$

there are two point of intersection (that have been calculated with a software program as Wolfram alpha, because there is no way to solve analiticaly)

x1=0.14

x2=8.21

and because the revolution is around y=-5 we have

$R=ln(x)-(-5)\\r=\frac{1}{2}x-2-(-5)\\$