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lisabon 2012 [21]
3 years ago
8

the value of x in this system of equations is 1. 3x y = 9 y = –4x 10 substitute the value of y in the first equation: combine li

ke terms: apply the subtraction property of equality: apply the division property of equality: 3x (–4x 10) = 9 –x 10 = 9 –x = –1 x = 1 what is the value of y?
Mathematics
2 answers:
alekssr [168]3 years ago
7 0
Repeating the steps of the statement:

3x + y = 9
y = -4x + 10

3x -4x + 10 = 9
-x + 10 = 9
-x = 9-10
-x = -1
x=1 (the same value given in the first sentence of the statement).

y = -4x + 10 (second equation of the system)
y = -4 (1) + 10 = -4 + 10 = 6

Answer: y = 6
Reptile [31]3 years ago
4 0
We have two unknowns from the equation therefore, two equations are needed. These equations are:
<span>
3x + y = 9
y = –4x +10 

To solve for y, we first substitute the second equation to the first one.
</span>3x + –4x +10<span>= 9 
</span><span>x = 1

We substitute the value of x to either of the equations and solve for y.

</span>y = –4(1) +<span>10 
</span><span>y = 6

</span>
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(60)x = 1, what are the possible values of x? Explain your answer.
Gnesinka [82]

Answer:

\frac{1}{60}

Step-by-step explanation:

Problem:

 The possible values of x in the equation (60)x = 1;

Solution:

Such a problem like this in which the highest power of the unknown is 1 will have just one solution.

       60x  = 1

To solve this, we take the multiplicative inverse of 60;

   the multiplicative inverse of 60 = \frac{1}{60}

   Use this inverse to multiply both sides of the expression;

         \frac{1}{60} x  60x  = 1 x \frac{1}{60}

                   x  = \frac{1}{60}

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3 years ago
Simplify the log expression
puteri [66]

Answer:

9log_{3} (z)

Please Mark Brainliest If This Helped!

6 0
1 year ago
If the weight of 7 sheets of paper is 35 grams, find how many sheets of paper it will take to weigh 1.5 kg
Leokris [45]

Answer:

300 sheets

Step-by-step explanation:

if you divide 35 by 7, you get 5

then divide 1,500 by 5 to get 300.

3 0
3 years ago
Un vendedor de celulaes tiene una meta diaria de venta si al momento lleva el Q.2,000.00 de la meta que equivale el 20%
astra-53 [7]

Answer:

Sales goal, S = Q. 10,000

Step-by-step explanation:

  • Let the daily sales goal be S.

<u>Given the following data;</u>

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To find his daily sales goal;

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0.2 * S = 2000

Dividing both sides by 0.2, we have;

S = \frac {2000}{0.2}

<em>Sales goal, S = Q. 10,000</em>

6 0
3 years ago
You know that a number 8 less than 60 is the number 52. so, you could rewrite your answer from the previous part as, "what numbe
svetoff [14.1K]
I'm a little confused by your question. 

You said 60-8 = 52 which is true.

Then, you asked 4x = 52 in an integer form
                           x = 52/4
                           x = 13. (Is that what you're asking?)

I'm not sure if this helps, but please comment if you need any help! Hope this helps though! :D
4 0
3 years ago
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