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DENIUS [597]
3 years ago
12

Which expression is equivalent to 15+3x A) 3(5+x) B) 5(3+x) C) 3(5+3x) D) 5(3+3x)

Mathematics
2 answers:
4vir4ik [10]3 years ago
7 0

Answer:

3(5+x)

Step-by-step explanation:

15+3x

5*3 + 3*x

Factor out 3

3(5+x)

Elodia [21]3 years ago
6 0
15x+3=3 (5x+1) I have taken this question before
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Please help me it's due tomorrow <br>​
LuckyWell [14K]

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160 sensei

Step-by-step explanation:

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Solve the inequality 12x - 3x +11 &gt; 4x - (17-9x)
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Describe the graph showing the relationship between the weight of something in kilograms and its weight in pounds. Use the conve
rewona [7]

Answer:

  • Using the y-axis to represent pounds, and the x-axis to represent kilograms, the graph is straight line going through the origin with a slope of 2.2 lbs/kg.

Explanation:

A constant conversion factor, such as 1 kg 2.2 lb, means that the two units are in direct proportion; thus the graph is a straight line that goes through the origin.

The conversion factor also gives the slope of the line.

Depending on which axis you choose for either unit the slope may be 2.2 pounds per kilogram, or 1/2.2 kilogram per pound.

When you use the y-axis for pounds and the x-axis for kilograms then the relationship is:

  • y = 2.2 x

In that case, the slope is 2.2 pounds per kilogram.

6 0
4 years ago
Question 4
astraxan [27]

Answer:

No real roots

Step-by-step explanation:

The given equations are:

3x-1+2y=0

3x^2-y^2+4=0

We make y the subject in the first equation to get

y=\frac{1-3x}{2}

We substitute into the second expression to get:

3x^2-(\frac{1-3x}{2})^2+4=0

We expand to get:

3x^2-\frac{(1-6x+9x^2)}{4}+4=0

Multiply through by 4 to get:

12x^2-1+6x-9x^2+16=0

3x^2+6x+15=0

The discriminant is given by D=b^2-4ac

D=3^2-4*12*15

D=-711

Since the discriminant is less than zero, the two curves never intersects.

Therefore the system has no real roots

6 0
4 years ago
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