3 years ago

340 pages to 20% decrease

Mathematics

1 answer:

Artemon [7]3 years ago

8 0

Answer:

272

Step-by-step explanation:

340 × 20%

=340 × 20/100

=340 × 0.2

= 68

20% of 340 = 68

340-68 =272

You might be interested in

Find the zeros of the function f(x) = (x + 2)(x - 3)(x + 12)

ser-zykov [4K]

Step-by-step explanation:

f(x) = (x + 2)(x - 3)(x + 12) = 0

(x + 2)(x - 3)(x + 12) = 0

so, the zeros of the function :

=> x1 = -2

=> x2= 3

=> x3 = -12

4 0

3 years ago

Give an example of an even function and explain algebraically why it is even.

sveta [45]

There's lots of even functions, but two that come to mind are the absolute value function, IxI, and x^2. These are even because they are reflected over the y axis. Another way to find this is that (-x)^2 is equal to x^2 and so is I-xI, the algebraic method. Good luck!

8 0

3 years ago

This semicircle has a diameter of 5 meters.

Ira Lisetskai [31]

Area of semicircle is given by:
$A_sc = \frac{1}{2} \pi r^2$

r is the radius, and we are given the diameter. Radius is half the diameter, so it's 2.5m. Let's plug that into the formula (using 3.14 as an estimation for pi):
$A_t = \frac{1}{2}(3.14)(2.5)^2 = 9.81m^2$

So, the area of this semicircle is 9.81m².

8 0

3 years ago

Simplify 1) 7x+5-4x-16 2) 5(1-4x)+2x-40

stich3 [128]

Answer:

-35-18x

Step-by-step explanation:

just calculate the difference

-35-20x+2x

-35-18x

6 0

4 years ago