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Serggg [28]
3 years ago
15

Please help me. Thank you

Mathematics
1 answer:
lina2011 [118]3 years ago
5 0

     Step-by-step explanation

i had to turn  my laptop just to read that

                 My

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What are the solutions to 7x2−15x−18=0?
Harlamova29_29 [7]

Answer:

C.) X=3 and X=-6/7

Step-by-step explanation:

Use the quadratic formula to solve

4 0
3 years ago
Read 2 more answers
Which property is represented below?<br> a = a
Vlada [557]
A = a is an example of Commutative Property. 

I hope this helps you out Aydria01!
6 0
3 years ago
Find the perimeter of the following triangle.
pashok25 [27]

Hello!

To find the perimeter of the triangle, we need to find the length of all the sides using the <u>distance formula</u>.

The distance formula is: d =\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}.

First, we can find the distance between the points (-3, -1) and (2, -1). The point (-3, -1) can be assigned to (x_{1},y_{1}), and (2, -1) is assigned to (x_{2},y_{2}). Then, substitute the values into the formula.

d =\sqrt{(2 - (-3))^{2}+ (-1 - (-1))^{2}}

d =\sqrt{5^{2}+0^{2}}

d =\sqrt{25} = 5

The distance between the points (-3, -1) and (2, -1) is 5 units.

Secondly, we need to find the distance between the points (2, 3) and (2, -1). Assign those points to (x_{1},y_{1}) and (x_{2},y_{2}), then substitute it into the formula.

d =\sqrt{(2 - 2)^{2}+ (-1 - 3)^{2}}

d =\sqrt{0^{2}+(-4)^{2}}

d =\sqrt{16} = 4

The distance between the two points (2, 3) and (2, -1) is 4 units.

Finally, we use the distance formula again to find the distance between the points (-3, -1) and (2, 3). Remember the assign the ordered pairs to (x_{1},y_{1}) and (x_{2},y_{2}) and substitute!

d =\sqrt{(2 -(-3))^{2}+ (3 - (-1))^{2}}

d =\sqrt{5^{2}+4^{2}}

d =\sqrt{25 + 16}

d =\sqrt{41} This is equal to approximately 6.40 units.

The last step is to find the perimeter. To find the perimeter, add of the three sides of the triangle together.

P = 5 units + 4 units + 6.4 units

P = 15.4 units

Therefore, the perimeter of this triangle is choice A, 15.4.

6 0
3 years ago
Reduce the following expression: (a-b) / (b-a)
Lynna [10]

Answer:

Simplify   —————

           b - a

1.1    Rewrite   (b-a)    as  (-1) •  (a-b)

Canceling Out :

1.2    Cancel out  (a-b)  which now appears on both sides of the fraction line.

Final result :

 -1

Step-by-step explanation:

4 0
2 years ago
What is the percent difference between 3x to x
allsm [11]

Answer:

.03%

Step-by-step explanation:

6 0
2 years ago
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