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Pie
3 years ago
7

-2x+3=15? What is the answer

Mathematics
1 answer:
const2013 [10]3 years ago
5 0
-2x+3=15

Subtract 3 from both sides:

-2x=12

Divide -2 from both sides:

X=-16 is your answer
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Help plssssssssssssssssssssss
Ilia_Sergeevich [38]

Answer:

Then the solution is (4, 6).

Step-by-step explanation:

Let's use the substitution method:

First multiply the second equation by 4, obtaining 4y = -2x + 32.

Now substitute (-2x + 32) for 4y in the first equation:

3x + (-2x + 32) = 36, or

3x - 2x + 32 = 36. or

x = 4.

If x = 4, then the second equation yields y = (-1/2)(4) + 8, or

y = -2 + 8, or y = 6

Then the solution is (4, 6).

Check, using the first equation:

Does 3(4) + 4(6) = 36?  Does 12 + 24 = 36?  YES

 

7 0
3 years ago
Complete each statement in the steps to solve x2 – 4x + 3 = 0 using the process of completing the square.
My name is Ann [436]
(x - 3)(x - 1)

x = 3 
or 
x = 1
8 0
3 years ago
Another one pls help!!
Mumz [18]

Answer:

21/41

Step-by-step explanation:

Find the total number of students

6+7+2+3+6+8+4+5=41

Then find the students that do not study chemistry

6+7+2+5 = 20

P( not study chemistry) = do not study chem)/total

                                       =21/41

5 0
3 years ago
-4y+4=10x standard form ik its 10x+4y=4 but you need to simplify more please help i need to get it in an hr
LuckyWell [14K]

Answer:

x= (2/5)-(2y/5)      (Im not sure if this is what you need but this is the answer simplified)

Step-by-step explanation:

Move all terms that don't contain x to the right side and solve.

7 0
2 years ago
Simplify the following expression using only positive exponents. Help please!? It has to be only positive exponents the -9/7t an
wlad13 [49]
(-9t^25) / (7t^26) = -9 / (7t)

8 0
3 years ago
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