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raketka [301]
4 years ago
5

100 points! explain well for brainliest

Mathematics
2 answers:
yawa3891 [41]4 years ago
7 0

Answer:

a

Step-by-step explanation:

Dima020 [189]4 years ago
5 0

Answer:

A

Step-by-step explanation:

Remember that the formula for the area of a triangle is:

A=\frac{1}{2}bh

In this case, our base will be the distance from the origin point (0, 0) to (x₁, y₁).

Our height will be the distance from the origin point (0, 0) to (x₂, y₂).

So, let's find each of the distances using the distance formula:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2

BASE:

Let's let (x₁, y₁) be itself and let's let (0, 0) be (x₂, y₂). Substitute this into the distance formula. This yields:

d=\sqrt{{(0-x_1)^2+(0-y_1)^2

Simplify:

d=\sqrt{(-x)^2+(-y)^2

We can remove the negative:

d=\sqrt{((-1)x_1)^2+((-1)y_1)^2

d=\sqrt{x_1\!^2+y_1\!^2}

And this is the length of our base.

HEIGHT:

Let' let (0, 0) be (x₁, y₁) and (x₂, y₂) be itself. Substitute them into our distance formula:

d=\sqrt{(x_2-0)^2+(y_2-0)^2

Simplify. So, our height is:

d=\sqrt{(x_2)^2+(y_2)^2

Therefore, substitute the base and the height for b and h in our equation yields:

A=\frac{1}{2}(\sqrt{(x_1)^2+(y_1)^2)}(\sqrt{(x_2)^2+(y_2)^2})

We can combine the square roots by multiplying. So:

A=\frac{1}{2}\sqrt{(x_1\!^2+y_1\!^2)(x_2 \!^2+y_2\!^2)

The answer choice that represents this is A.

So, our answer is A.

And we're done!

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How many models of 100 do you need to model 2,700
Mariana [72]

Answer:

27

Step-by-step explanation:

well 20 models of 100's=2,000

so now we have 700 left over

so to get to 700 how many 100's does it take=7

so put those 2 numbers together 27

Hope it helps have a great day :}

5 0
2 years ago
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s2008m [1.1K]

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5 0
2 years ago
Randall makes chilli for a cold winter night. To make 7 servings, he uses 12 1/4 cups of diced tomatoes. How many cups of diced
grigory [225]

Answer:

1.25 cups of diced tomatoes

Step-by-step explanation:

1.  12 1/4 ÷ 7

2. = 49/4 x 1/7

3.  =49/28

4. =7/4

5. =1 1/4 or 1.25

I hope this was helpful

6 0
3 years ago
I need help in problem 8 plz help me I need a a
iogann1982 [59]
Here are three ways where There could be equal rows

3*12=36
4*9=36
6*6=36
6 0
3 years ago
In the math problem, "450 is 75% of what number?" 450 is the ___.
Anni [7]

Answer:

600

Step-by-step explanation:

Since 3/4 of 100 is 75, we have to divide 450 by three.

450 ÷ 3 = 150

150 x 4 = <em><u>600</u></em>

<em><u /></em>

<em>                                                </em><em><u>Hope this helps :)</u></em>

<em><u>Please mark brainliest ;)</u></em>

<em><u /></em>

<em><u /></em>

6 0
3 years ago
Read 2 more answers
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