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AURORKA [14]
3 years ago
10

Please help!! 15 points!

Mathematics
2 answers:
Lady bird [3.3K]3 years ago
6 0
The answer is A( -12, -14), B( 8, -4), C(0, 14)
AVprozaik [17]3 years ago
4 0

Answer:

1. A(-12,-14),B(8,-4),C(0,14)

2. A(-24,-28), B(4,-2),C(0,7)

3. A(-6,-7), B(4,-2), C(0,7)

4. A(-24, -14), B(16,,-4),C(0,14)

Step-by-step explanation:

Each x and y are multiplied by the scale factor of 2

You might be interested in
Co-ordinate Geometry
saul85 [17]

Answer:

The value of a  = 14

Step-by-step explanation:

Given

(x₁, y₁) = (2, 4)

(x₂, y₂) = (6, a)

(x₃, y₃) = (-1, 1)

A = 9 sq.units

Area of a triangle with vertices (x₁, y₁), (x₂, y₂), and (x₃, y₃) is:

A=\frac{\left|x_1\left(y_2-y_3\right)+x_2\left(y_3-y_1\right)+x_3\left(y_1-y_2\right)\right|}{2}

substituting the values (x₁, y₁) = (2, 4), (x₂, y₂) = (6, a), (x₃, y₃) = (-1, 1), A = 9 in th formula

A=\frac{\left|x_1\left(y_2-y_3\right)+x_2\left(y_3-y_1\right)+x_3\left(y_1-y_2\right)\right|}{2}

9=\frac{\left|2\left(a-1\right)+6\left(1-4\right)+-1\left(4-a\right)\right|}{2}

Multiply both sides by 2

\frac{2\left|2\left(a-1\right)+6\left(1-4\right)-1\left(4-a\right)\right|}{2}=9\cdot \:2

simplify

\left|2\left(a-1\right)+6\left(1-4\right)-1\left(4-a\right)\right|=18

As the area is always positive.

so

2\left(a-1\right)+6\left(1-4\right)-1\cdot \left(4-a\right)=18

2\left(a-1\right)-18-\left(4-a\right)=18

Add 18 to both sides

2\left(a-1\right)-18-\left(4-a\right)+18=18+18

simplify

2\left(a-1\right)-\left(4-a\right)=36

3a-6=36

3a=42

Divide both sides by 3

\frac{3a}{3}=\frac{42}{3}

a=14

Thus, the value of a  = 14

7 0
3 years ago
I don’t understand at al plz help!!
LekaFEV [45]

m = the number of miles


30 + 0.18m ≤ 75

[They charge $30 plus $0.18 per mile(m), she can spend no more than $75. So $75 is the maximum/most she can spend, she can't spend over $75.]


Your answer is C



Now you need to find the solution of the inequality in order to graph it.

30 + 0.18m ≤ 75   Isolate "m". Subtract 30 on both sides

0.18m ≤ 45   Divide 0.18 on both sides

m ≤ 250        [this means that she can drive 250 miles on $75]


Next you need to graph it on a number line.

When the sign is ≤ or ≥, the dot is filled in

When the sign is < or >, the dot is an open circle/not filled in


m ≤ 250   [m is less than or equal to 250, so m can be 250 or any number less than 250]


The graph shows that she can only drive 250 miles or less on $75


6 0
3 years ago
Solve the proportion.
Basile [38]

Ratio of number of classes and the time taken to conduct each one of them on Thursday = 6 : 8

Ratio of number of classes and the time taken to conduct each one of them on Friday = c : 4

Which means :-

6 : 8 :: c : 4

6/8 = c/4

= 6 × 4 = c × 8

= 24 = 3 × 8

c = 3

The ratio = 6 : 8 :: 3 : 4

Which means that C = 3 .

5 0
3 years ago
What is the answer to 1/2÷5/8?
Hoochie [10]

Hi Lurch

1/2 divide by 5/8

1/2÷5/8

1/2*8/5 (multiply numerator together and denominator together )

8/10 ( divide the numerator by 2 and same for the denominator )

4/5

I hope that's help , please if you have question(s) ask !


8 0
3 years ago
Read 2 more answers
Can somebody please help
GrogVix [38]

Answer:

Number 4 is Monday

Step-by-step explanation

7 0
3 years ago
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