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siniylev [52]
3 years ago
15

7. What type of lines does the system y=3x+2 and 3x-y=-2 form?

Mathematics
1 answer:
Aleks [24]3 years ago
3 0

Answer: The system forms the same line.

Step-by-step explanation:

3x - y = -2

-y = -3x - 2 (subtract 3x from both sides)

y = 3x + 2 (divide both sides by -1)

First equation: y = 3x +2

Second equation: y = 3x +2

THEY ARE THE SAME LINE —> there are infinitely many solutions.

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Luis was worried about his Spanish final exam grade. The test had 200 questions, and he got
rodikova [14]

Answer:

Luis:

\frac{175}{200} \times 100\% = 87.5\%

Marina:

\frac{130}{150}  \times 100\% = 86.6\%

Answer: Marina got the better percent score than Luis

Marina:

7 0
3 years ago
Is a positive integer raised to a negative power always positive
Evgesh-ka [11]

Answer:

Yes

Step-by-step explanation:

Many students gets confused with these exponential problems, they often get misguided but understand that there is nothing to be confused of.

When you have a negative number, you just take the reciprocal of the whole exponent number.

What is a reciprocal?

Let's take an integer for example, let's take the number 3.

The reciprocal for 3 is (1/3)

Let's take an other number, let's take 2/3

The reciprocal for 2/3 is (3/2)

In conclusion, we just reverse the denominator and the numerator or just switch it.

We take 3 as (3/1) and that is the reason, the reciprocal would be (1/3)

Now, coming to the negative integers. Taking an example:

(2)⁻¹

This would be become (1/2¹) = (1/2)

Hence, the result of a negative integer is positive but would be a fraction.

Hope I helped!


3 0
3 years ago
6 times 1/5 less than 1 , equal to 1, or greater than 1?
denpristay [2]
6 times 1/5 (which is also 0.2) is greater than 1
3 0
3 years ago
A die was rolled 10 times and 2 appeared 4 times. What is the probability of getting 2?
fiasKO [112]

Answer:

none of the above

Step-by-step explanation:

probability shouldn't be equal to or greater than 1

5 0
2 years ago
Let a and b be irrational numbers. Is a•b rational or irrational
SSSSS [86.1K]

Answer:

irrational

Step-by-step explanation:

when you multiply a irrational number by a rational number you dont lose the properties of an irrational number

6 0
3 years ago
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