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Troyanec [42]
1 year ago
12

How many solutions does each system have?

Mathematics
1 answer:
dezoksy [38]1 year ago
6 0

Answer:

System 1 has an infinite number of solutions and System 11 has no solution.

Step-by-step explanation:

System 1:

x = y - 3

x - y = -3

2x - 2y = -6

Divide above by 2:

x - y = -3

So the 2 equations are identical

and they have an infinite number of solutions.

System 11:

5x + 2y = -7

15x + 6y = 21

Divide the above by 3:

5x + 2y = 7

Comparing this to the first equation the left sides are the same but right sides are different ( -7 and  7)/

There is no solution to this system.

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The diameter of the Sun is about 1.4 x 106 km. The diameter of the planet
den301095 [7]

Answer:

1.17*10²

Step-by-step explanation:

Diameter of the sun is about 1.4 × 10⁶ km

1.4*10⁶ km = 1,400,000

Diameter of the planet venus is about 12000 km

12000 km = 1.2 × 10⁴

Ratio of the diameters

Sun : Venus

1.4 × 10⁶ km : 1.2 × 10⁴

1.4 × 10⁶ km / 1.2 × 10⁴

1.4 / 1.2 × 10^6-4

1.166 × 10²

Approximately

1.17 × 10²

7 0
2 years ago
The actual length of side y is 22cm. Use the scale drawing to find the length of side x.
kozerog [31]

Given:

The actual length of side y is 22cm.

To find:

The length of side x by using the scale drawing.

Solution:

We know that the corresponding sides of original figure and scale drawing are proportional.

\dfrac{x}{1.8}=\dfrac{y}{1.4}

\dfrac{x}{1.8}=\dfrac{22}{1.4}

x=\dfrac{22}{1.4}\times 1.8

x\approx 28.286

Therefore, the length of side x is about 28.286 cm.

8 0
3 years ago
WHAT IS THE LEGENTH OF ML. PLEASE HELP NOW​
Vadim26 [7]

Answer:

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Step-by-step explanation:

6 0
2 years ago
A pair of pants with a marked tag of $35.00 has a discount of 20%. How much is the discount?
melisa1 [442]
$35.00 x .20 = $7

So the discount would be $7 off of $35, for a final sale price of $28
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3 years ago
ILL GIVE BRAINELST
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Answer: number 3 4 5

Step-by-step explanation:hope this helps!

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