2 years ago

Help needed asap please?

Mathematics

1 answer:

OleMash [197]2 years ago

6 0

Answer:

its 72

Step-by-step explanation:

i already solved this question yesterday. :)

You might be interested in

The lifetime of a machine part has a continuous distribution on the interval (0, 50) with probability density function f, whe

Strike441 [17]

Answer:

Probability that the lifetime of the machine part is less than 13 = 0.6782

Step-by-step explanation:

given that $f(x)=(10+x)^{-2}$

Normalizing the function we get

$\int_{0 }^{50}cf(x)dx=1$

$\int_{0 }^{50}c(10+x)^{-2}dx=1$

$\therefore a=\frac{1}{\int_{0 }^{50}(10+x)^{-2}dx}$

$\therefore a=12$

$P(x< 13)=\int_{0}^{13}12(10+x)^{-2}dx\\\\P(X< 13)=0.6782$

4 0

3 years ago

ASAP:::::: 75 POINTS TO THE BRAINLIEST!!!!!

Misha Larkins [42]

Answer:

t = 6 4/25 hours

Step-by-step explanation:

The formula to find out how long it takes them to do the job is

1/m + 1/ a = 1 /t

where m is the time for Matthew to do the job

a is the time for Arianna to do the job

and t is the time for them to do the job together

m = 14 hours

a = 11 hours

Substituting what we know

1/14 + 1/11 = 1/t

Multiplying by 154t (14*11*t) so we can clear the fractions

154t*(1/14 + 1/11) = 1/t* 154t

11t + 14t = 154

Combine like terms

25t = 154

Divide by 25

t = 154/25

t = 6 4/25 hours

6 0

2 years ago

Can anyone help with this problem ASAP it’s a timed test PLzzzz

riadik2000 [5.3K]

Answer:

It's (D)...............................

5 0

2 years ago

Solving One Step Equations. SHOW YOUR WORK <br> x - 7 = 13 solve to find x

nevsk [136]

Answer:I'm guessing 2

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Determine the slope and the y-intercept of the line

Andrews [41]

Answer is H
Y-intercept is where the line crosses on line y
X-intercept is how far the line rises and runs to the next point

6 0

2 years ago