All categories

3 years ago

Mary, Jill, and Jim have 91 apples. Jill has twice as many as Mary. Tim has 7 more than Mary. How many do they each have?

Mathematics

1 answer:

Arisa [49]3 years ago

6 0

Mary has 21 Jill has 42 Tom has 7

You might be interested in

Find the average value of the function on the given interval.<br> f(x)=2 ln x; [1,e]

JulijaS [17]

Answer:

$f_{avg}=\frac{1}{e-1}$

Step-by-step explanation:

We are given that a function

$f(x)=2lnx$

We have to find the average value of function on the given interval [1,e]

Average value of function on interval [a,b] is given by

$\frac{1}{b-a}\int_{a}^{b}f(x)dx$

Using the formula

$f_{avg}=\frac{1}{e-1}\int_{1}^{e}lnx dx$

By Parts integration formula

$\int(uv)dx=u\int vdx-\int(\frac{du}{dx}\int vdx)dx$

u=ln x and v=dx

Apply by parts integration

$f_{avg}=\frac{1}{e-1}([xlnx]^{e}_{1}-\int_{1}^{e}(\frac{1}{x}\times xdx))$

$f_{avg}=\frac{1}{e-1}(elne-ln1-[x]^{e}_{1})$

$f_{avg}=\frac{1}{e-1}(e-0-e+1)=\frac{1}{e-1}$

By using property lne=1,ln 1=0

$f_{avg}=\frac{1}{e-1}$

8 0

3 years ago

the margins of a page are usually expressed in decimal parts of an inch. Using the given figure, how long is each typed line on

Marta_Voda [28]

The answer is .5 of an inch

7 0

3 years ago

Is 3.14 irrational or rational

mixas84 [53]

Answer:

rational

Step-by-step explanation:

3 0

3 years ago

URGENT PLEASE HELP ME!!

Andrews [41]

Answer:

D 2400 ft^2

Step-by-step explanation:

His joumey maps out a right angles triangle with base 80 and height 60.

The required area = 1/2 * 80 * 60

= 2400 ft^2

4 0

3 years ago

Can someone please answer this. Is it a,b,c, or d

Mashcka [7]

Answer:

(n+6)(n-6)

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers