All categories

2 years ago

Find the area of the figure below. Use 3.14 to approximate .

Mathematics

1 answer:

elena-14-01-66 [18.8K]2 years ago

3 0

Answer:

145.1 m^2

Step-by-step explanation:

(8x15)+(3.14x8)

120+25.12

145.12

round

145.1

You might be interested in

If A= [-5,7] and B= [6,10], then find A u B

lesantik [10]

Answer:

$\large\boxed{A\ \cup\ B=[-5,\ 10]}$

Step-by-step explanation:

Look at the picture.

The union of two sets A and B (A ∪ B) is the set of elements which are in A, in B, or in both A and B

7 0

3 years ago

A culinary club earns $1360 from a dinner service. They sold 45 adult meals and 80 student meals. An adult meal costs twice as m

CaHeK987 [17]

Answer:

$16

Step-by-step explanation:

90m+80m=1360

170m=1360

m=8

8 x 2= 16

5 0

3 years ago

Is this right? 20 points if you help me PLEASE I NEED IT ASAP. CORRECT ME IF IM WRONG!!

Flauer [41]

Answer:

correct

Step-by-step explanation:

4 0

2 years ago

Sometimes a change of variable can be used to convert a differential equation y′=f(t,y) into a separable equation. One common ch

enot [183]

Answer:

$y=\frac{-7t^2+22t-7}{7t-22}$

Step-by-step explanation:

We are given that

Initial value problem

$y'=(t+y)^2-1$ , y(3)=4

Substitute the value $z=t+y$

When t=3 and y=4 then

z=3+4=7

$y'=z^2-1$

Differentiate z w.r.t t

Then, we get

$\frac{dz}{dt}=1+y'$

$z'=1+z^2-1=z^2$

$z^{-2}dz=dt$

Integrate on both sides

$-\frac{1}{z}dz=t+C$

$z=-\frac{1}{t+C}$

Substitute t=3 and z=7

Then, we get

$7=-\frac{1}{3+C}$

$21+7C=-1$

$7C=-1-21=-22$

$C=-\frac{22}{7}$

Substitute the value of C then we get

$z=-\frac{1}{t-\frac{22}{7}}$

$z=\frac{-7}{7t-22}$

$y=z-t$

$y=\frac{-7}{7t-22}-t$

$y=\frac{-7-7t^2+22t}{7t-22}$

$y=\frac{-7t^2+22t-7}{7t-22}$

8 0

3 years ago

Let y represent the total cost of publishing a book (in dollars). Let x represent the number of copies of the book printed. Supp

Jobisdone [24]

Answer:

Change in the cost of each book printed = $25

Cost to get started = $1150

Step-by-step explanation:

Equation representing the relation between number of copies of the books (x) and total cost of publishing a book (y) is,

y = 1150 + 25x

This equation is in the form of a linear equation,

y = mx + b

Where m represents the change in cost of printing each book and y-intercept of the line 'b' represents the cost before any book is printed.

By comparing these equations,

m = 25

Therefore, change in the cost of each book printed = $25

b = 1150

Which represents the cost to get started = $1150

4 0

3 years ago