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Tasya [4]
3 years ago
7

What are five ways to determine if a quadrilateral is a parallelogram?

Mathematics
1 answer:
Gennadij [26K]3 years ago
8 0
Opposite sides are parallel, opposite angles are equal, no curves (only straight lines), there are only 4 sides, and 4 angles,
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Given the function f(x)=-2x^3-24x^2-42x, determine all intervals on which f is both increasing and concave down.
konstantin123 [22]

Answer:

A mutually exclusive pair of events are complements to each other. For example: If the desired outcome is heads on a flipped coin, the complement is tails.

Step-by-step explanation:

6 0
3 years ago
Which of the sets of order pairs represents a function
Citrus2011 [14]

A function is seen when you know that for every x value there is one y value. An x value cannot be repeated.


In A, the x coordinates are 3, 4, -3, and 2. They are all different.


In B, they are 2, -1, 5, and 4. Again, they are all different.


Both A and B represent functions.

6 0
4 years ago
Let the area of a rectangle in square metres is x^2+13x+42 how much longer is the length than the width of the rectangle
worty [1.4K]

Answer:

1

Step-by-step explanation:

Area of rectangle

lw

So we have to factorise the expression

x²+13x+42

x²+6x+7x+42

x(x+6)+7(x+6)

(x+7)(x+6)

So

x+7-(x+6)

x+7-x-6

1

4 0
3 years ago
Need help ASAP plzzzz
DaniilM [7]

Answer: 22.8 ft. squared

Step-by-step explanation:

5.7 x 8 = 45.6 ÷ 2 = 22.8

area of a triangle = base x height ÷ 2

3 0
4 years ago
Someone help please thank you
mojhsa [17]

Answer:

See below.

Step-by-step explanation:

So we have the two functions:

f(x)=8x-5\text{ and } g(x)=9-2x

And we want to find:

(f\circ g)(x)\text{ and } (g\circ f)(x)

1)

Recall that:

(f\circ g)(x)

is the same as:

=f(g(x))

Thus, we can substitute g(x):

=f(9-2x)

And substitute that into f(x):

f(x)=8x-5\\f(9-2x)=8(9-2x)-5

Distribute:

=72-16x-5

Subtract and simplify:

=67-16x\\=-16x+67

Thus:

(f\circ g)(x)=-16x+67

2)

Similarly:

(g\circ f)(x)=g(f(x))

Substitute f(x):

g(f(x))=g(8x-5)

Substitute:

g(8x-5)=9-2(8x-5)

Distribute:

=9-16x+10

Simplify:

=-16x+19

Therefore:

(g\circ f)(x)=-16x+19

4 0
4 years ago
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