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masya89 [10]
3 years ago
8

how is solving inequalities with addition and subtraction similar to and different from solving equations with addition and subt

raction?
Mathematics
1 answer:
SpyIntel [72]3 years ago
6 0
That technique for solving equations is: Whatever you do to one side of the equation, you have to do to the other side to preserve the equality The technique for solving inequalities is: Whatever you do to one side of the inequality, you have to do to the other side to preserve the inequality. the techniques are the same. The difference between solving equations and solving inequalities is: If you multiply or divide an inequality by a negative number, then the inequality reverses. !!!!!
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In the form of the matrice, how do you work out the following simultaneous equation?
lapo4ka [179]
\left[\begin{array}{ccc}1&3&7\\1&1&1\end{array}\right]
multiply 2nd row by -1 and add to first row
\left[\begin{array}{ccc}0&2&6\\1&1&1\end{array}\right]
divide the 1st row by 2
\left[\begin{array}{ccc}0&1&3\\1&1&1\end{array}\right]
multiply the first row by -1 and add to 2nd row
\left[\begin{array}{ccc}0&1&3\\1&0&-2\end{array}\right]

now we know
y+3=0
x-2=0

therefor
y=-3
x=2
4 0
3 years ago
What is the missing side length in the triangle?<br><br> plsss someone help!!
UkoKoshka [18]

Answer:

The measure of the missing side length = 45

Step-by-step explanation:

Pythagorean Theorem states: A² + B² = C²

28² + B² = 53²

784 + B² = 2809

B² = 2809 - 784

B² = 2025

B = \sqrt{2025}

B = 45

Therefore the measure of the missing side length = 45

Hope this helps!

6 0
3 years ago
Read 2 more answers
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Law Incorporation [45]

Answer:

20 people participated in the survey.

5 0
3 years ago
Read 2 more answers
Based on Pythagorean identities, which equation is true?
balu736 [363]

sin?e 1 -cos

cote-csc?-1

8 0
4 years ago
Can anyone help? i dont fully understand this
IgorC [24]

Answer:

It would be about 1/4

Step-by-step explanation:

8 0
2 years ago
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