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3 years ago

What is the value of x? 2x+ 3= 7

Mathematics

2 answers:

scZoUnD [109]3 years ago

7 0

Answer:

x=2

Step-by-step explanation:

2x2=4 and 4=3=7

siniylev [52]3 years ago

4 0

Answer: 2. I used the plug-in method because this is an easy question.

Step-by-step explanation:

1st Step: 2*(2)+3=7

2nd Step: 4+3=7

3rd Step: 7=7=True

Hope this helps!

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Which of the following correctly isolates the constant for the polynomial: x2 – 12x + 27

Andru [333]

Answer:

x^2 - 12x = -27

Step-by-step explanation:

Here, we want to isolate the constant for the polynomial

To do this, we start by setting the expression to zero

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3 years ago

The price, e, of an entertainment system at extreme electronics is $220 less than twice the price, u, of the same system at ultr

MrMuchimi

Answer: The price of system at extreme electronics is $570 and the price of system at ultra electronics is $395.

Step-by-step explanation:

Let the price of the system at the ultra electronics be u

Let the price of the system at extreme electronics be e

According to question, we have

$2u-e=220\\\\and\\\\e-u=175$

Now, using the substitution method, we will solve the above system of equations.

$e-u=175\\\\e=175+u$

Now, put the value of u in the first equation :

$2u-e=220\\\\2u-(175+u)=220\\\\2u-175-u=220\\\\u-175=220\\\\u=220+175\\\\u=\$395$

Now, we put the value of u in the equation which is given by:

$e=175+u\\\\e=175+395\\\\e=\$570$

Hence, the price of system at extreme electronics is $570 and the price of system at ultra electronics is $395.

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3 years ago

What is the midpoint of the segment joining the points (5,0) and (3,4)

Rudiy27

It would be (4,2)......

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3 years ago