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3 years ago

9 students volunteer for a committee. How many different 2-person committees can be chosen?

Mathematics

2 answers:

asambeis [7]3 years ago

7 0

It is definitely going to be 72

MariettaO [177]3 years ago

6 0

The answer is 72, since for the first person, we have 9 choices. The second choice, we have 8 choices. Therefore, the answer is 8 times 9, which is 72.

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Find the area of the shape shown<br> below.

steposvetlana [31]

Answer:

The area of the figure is 28 units².

Step-by-step explanation:

Find the area of the full rectangle, ignoring the triangle.

$a = lw \\ a = 4 \times 8 = 32$

Then, find the area of the triangle:

$a = \frac{bh}{2} \\ a = \frac{2 \times 4}{2} \\ a = 4$

Finally, subtract:

$32 - 4 = 28$

7 0

3 years ago

Which of the following represents the distance

Lunna [17]

Answer:

D. d = sqrt( ( x2-x1)^2 + (y2-y1)^2)

C. d = sqrt( ( x1-x2)^2 + (y1-y2)^2)

B. d = sqrt( (|x2-x1|^2 + |y2-y1|^2)

Step-by-step explanation:

Given two points (x1, y1) and (x2,y2) we can find the distance using

d = sqrt( ( x2-x1)^2 + (y2-y1)^2)

The order of the terms inside the square doesn't matter

d = sqrt( ( x1-x2)^2 + (y1-y2)^2)

When we are squaring are term, we can take the absolute value before we square and it does not change the value

d = sqrt( (|x2-x1|^2 + |y2-y1|^2)

3 0

2 years ago

Which of the following graph is the solution -10<3x-4<8

satela [25.4K]

Answer:

( − 2 , 4 )

Step-by-step explanation:

There were no graphs listed in your question. So...

Convert the inequality to interval notation.

6 0

3 years ago

Help with Math PLZ (Questions in screenshot)

-Dominant- [34]

1.) Let's say that the circle on the graph below represents x. The arrow is pointing to all the numbers greater than x, which happens to be on -2. If it points right, this means that x can equal to any number greater than -2. So your answer is x > -2.

2.) For inequalities such as these, you can simplify just like what you do for normal equations. Let's isolate x.

$x - 7 > 10$