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Paha777 [63]
2 years ago
13

Solve each system of equations by substitution

Mathematics
1 answer:
In-s [12.5K]2 years ago
8 0

Answer:

1. y = 2x and x + y = 6

x+2x=6

3x=6

3x/3=6/3

x=2

2. 5x + 10y = 3 and x = -1/2y

5(-1/2y)+10y=3

-2.5y+10y=3

7.5y=3

7.5y/7.5=3/7.5

y=0.4

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Elias has decided to fence in a garden that is in the shape of a parallelogram. If one side measures 76 ft and 250 ft of fencing
Leni [432]

The length of side of garden are 76 feet and 49 feet

<em><u>Solution:</u></em>

Given that, Elias has decided to fence in a garden that is in the shape of a parallelogram

Measure of one side = 76 feet

250 ft of fencing is needed to enclose the garden

Therefore, perimeter = 250

<em><u>The perimeter of parallelogram is given by:</u></em>

Perimeter = 2(a + b)

Where, a and b are the length of sides

Here, a = 76

b = ?

<em><u>Substituting in formula, we get</u></em>

250 = 2(76 + b)

250 = 152 + b

2b = 250 - 152

2b = 98

b = 49

Thus the length of side of garden is 49 feet

8 0
2 years ago
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aleksandrvk [35]

Answer:

5 4 3 2 1 0 -1 -2 -3 -4 -5

Step-by-step explanation:

6 0
3 years ago
Solve by completing the square:X^2+6x-12=0
Ira Lisetskai [31]
X² + 6x  -12 = 0
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x = <u>-6 +/- √(84)
</u>              2<u>
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5 0
3 years ago
What is the answer for 1/2 x N=1/3
Sonja [21]
1/2* N= 1/3
⇒ N= (1/3)/ (1/2)
⇒ N= (1/3)* (2/1)
⇒ N= 2/3

The final answer is N= 2/3~
3 0
2 years ago
How much time woiuld a old car take to cover a distance of 39 miles at a speed of 13 miles/i hour ?
yulyashka [42]

Answer:

3 hours

Step-by-step explanation:

39 miles/ 13 miles per hour means 3 hours. SIMPLE!

4 0
2 years ago
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