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vampirchik [111]
3 years ago
14

10. Lin says that a solution to the equation 2x – 6 = 7x must also be a solution to the

Mathematics
1 answer:
nirvana33 [79]3 years ago
3 0

Answer:

Both give - 6=5x

Step-by-step explanation:

First equation 2x-6=7x

When you solve it, it becomes :

2x-6=7x

Subtract 2x both sides

2x-2x-6=7x-2x=

-6=5x

2)5x-6=10

5x-5x-6=10x-5x

-6=5x

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Mr. Sánchez owns a square field. The side lengths are 0.9 kilometers. There are 1,980 prairie dog burrows in the fields. What is
Simora [160]
The first thing we are going to do is find the area of the field. To do this we are going to use the area of a square formula: A=s^2
Were 
A is the area in square kilometers 
s is one of the sides of the square
We know for our problem that  the side lengths of the field are 0.9 kilometers, so s=0.9. Lets replace that value in our formula to find A:
A=(0.9)^2
A=0.81 

Now, to find the population density of the filed, we are going to use the population density formula: P_{d}= \frac{I}{A}
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P_{d} is the population density in <span>in burrows per square kilometer
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We know that I=1980 and A=0.81, so lets replace those values in our formula:
P_{d}= \frac{1980}{0.81}
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3 years ago
Solve the given trigonometric equation analytically and by use of a calculator. Compare results. Use values of x for 0≤x≤2π
kodGreya [7K]

Answer:

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Step-by-step explanation:

8 0
2 years ago
Can someone please help me with this equation, ill give brainest to the person who is correct.
ohaa [14]
5x means that 5 should be multiplied by the value of x
Every time a variable is touching a number it means it’s multiplying

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3 years ago
Can someone pls help me with this.
Elodia [21]

Answer:

[A] It will take 24 minutes for Joe and Charmaine to meet again at the starting line.

[B] Joe will complete 2 laps

[C]  Charmaine will complete 3 laps.

Step-by-step explanation:

Factor two numbers 12 and 8:

12 = 2×2×3

8 = 2×2×2

Find LCM of 12 and 8:

Lcm of 12 and 8 - 2×2×3×2 = 24

Therefore,

[A] How much time does it take for them to meet again at the starting line?

It will take 24 minutes for Joe and Charmaine to meet again at the starting line.

[B] How many laps does Joe complete

Joe will complete 2 laps

[C] How many laps does Charmaine complete?

Charmaine will complete 3 laps.

<u>~lenvy~</u>

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2 years ago
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Novay_Z [31]

Answer:

x=\pm \sqrt{11} \\y=-4.

Step-by-step explanation:

\left \{ {{3x^2+4y=17} \atop {2x^2+5y=2}} \right. \\\\Then\\\\\left \{ {{2 \times (3x^2+4y)=2 \times 17} \atop {3\times(2x^2+5y)=3\times2}} \right. \\\\\left \{ {{6x^2+8y=34 \quad (1)} \atop {6x^2+15y=6\quad (2)}} \right.\\\\(1)-(2) \Rightarrow -7y=28 \Rightarrow y =-4.\\Since \: \:  2x^2+5y=2 \Rightarrow 2x^2=2-5y\\\Rightarrow 2x^2=2+20=22\\\Rightarrow x^2=22:2=11\\\Rightarrow x=\pm \sqrt{11}.

7 0
3 years ago
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