I need this due by tonight what is 45+x=75

Mathematics

2 answers:

alexandr1967 [171]1 year ago

8 0

Answer:30

Step-by-step explanation: jus subtract total number by 45 to c what u missin

vladimir1956 [14]1 year ago

4 0

Given: $\textsf{45 + x = 75}$

Need: $\textsf{The value of the unknown x}$

Solution: In order to solve for the unknown we must subtract 45 from both sides which would isolate x and given us the value.

Subtract 45 from both sides

$\textsf{45 - 45 + x = 75 - 45}$

$\textsf{x = 75 - 45}$

$\textsf{x = 30}$

After simplifying the expression we were able to determine that x is equal to 30.

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Solve. x^2+9x+2=0 thanks!

shtirl [24]

Step one:
ALWAYS set equation equal to zero, which in this case has already been done for us.

Step two:
Figure out what formula you need to use in order to solve in this case I'd use the Quadratic formula.

a=1
b=9
c=2

Quadratic formula:
$x = \frac{ - b + - \sqrt{(b) ^{2} - 4(a)(c)} }{2(a)}$
Then you would plug in the information.
$x = \frac{ - 9+ - \sqrt{(9) {}^{2} - 4(1)(2) } }{2(1)}$
The solve for what is underneath the square root ONLY.
$x = \frac{ - 9 + - \sqrt{73} }{2}$
Since you cannot solve this any further, your final two answers are...
$x = \frac{ - 9 + \sqrt{73} }{2}$
$x = \frac{ - 9 - \sqrt{73} }{2}$

3 0

3 years ago

Twice a number added to a smaller number is 5. The difference of 5 times the smaller number and the larger number is 3. Let x re

Veronika [31]

Answer:

The equations which represents the situation are

1) 2Y+X=5

2) 5X-Y=3

Step-by-step explanation:

~Cornasha_Weeb

3 0

2 years ago