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Sloan [31]
2 years ago
10

Which first step for solving the given system using substitution results in an equation without fractions?

Mathematics
1 answer:
My name is Ann [436]2 years ago
7 0

Step-by-step explanation:

Solve for y in the first equation

3x+y=9

y=8-3y

Hence, no fraction is formed

So, second option is correct

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In the xy plane, a quadrilateral has vertices at (-1, 4), (7,4), (7,5), and (-1. 5). What is the perimeter of the quadrilateral?
iris [78.8K]

Answer:

(B) 18.

Step-by-step explanation:

We are asked to find the perimeter of a quadrilateral with vertices at (-1, 4), (7,4), (7,5), and (-1. 5).

First of all, we will draw vertices of quadrilateral on coordinate plane and connect the vertices as shown in the attached photo.

We can see that our quadrilateral is a parallelogram, whose parallel sides are equal.

\text{Perimeter of quadrilateral}=8+1+8+1

\text{Perimeter of quadrilateral}=16+2

\text{Perimeter of quadrilateral}=18

Therefore, the perimeter of the given quadrilateral is 18 units.

8 0
3 years ago
Roll two dice what are the chances you roll atleast one six
Lesechka [4]
It is not very likely you would roll one six.
5 0
3 years ago
Use the distributive property to write an experssion that is equalent to 7(3x-4)
photoshop1234 [79]

Answer:

21x-28

Step-by-step explanation:

the distributive property states that a(bx+c) is equal to abx+ac. in this expression, a is 7, b is 3, and c is negative 4. ab is 7*3, which is 21, so abx is 21x. ac is 7*-4, which is -28. combining these two results in 21x-28.

6 0
2 years ago
Read 2 more answers
Which one is the answer ?
N76 [4]
Trueeeeeeeeeeeeeeeeeee
7 0
3 years ago
Find the value of X
vredina [299]

Answer:

x=8

RPS = 36

Step-by-step explanation:

QPS = 180

The two angles that form QPS

QPR + RPS = 180

7x+88 + 3x+12 = 180

Combine like terms

10x+100 =180

Subtract 100 from each side

10x = 180-100

10x = 80

Divide by 10

x =80/10

x = 8

RPS = 3x+12

        = 3(8)+12

         24+12

        36

7 0
3 years ago
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