2 years ago

2 more than 5 minus -4, write the expression

Mathematics

2 answers:

leonid [27]2 years ago

4 0

5-(-4)+2 should be the expression

Dmitry_Shevchenko [17]2 years ago

3 0

(5-4)+2 I think maybe

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Elimination Method: 6x - 4y = -24 and 4x + 5y = -2

nirvana33 [79]

Answer:

$(-2;-6)$

Step-by-step explanation:

First of all, let's rewrite the first one after dividing both sides by 2.

$\left \{ {{3x-2y=-12\atop {4x+5y=-2}} \right.$

Now, let's pick one you want to eliminate.

Eliminating x: Let's multiply the first one by 4, the second by 3, and subtract one from the other. Rest is simply solving an equation in one variable

$4I-3II : 12x-8y-12x+15y = -48 - (-6)\\7y = -42 \rightarrow y= -6$

Eliminating y: Let's multiply the first by 5, the second by 2, and add them together. Rest is simply solving an equation in one variable

$5I+2II: 15x -10y +8x +10y = -60 +4\\23x = -56 \rightarrow x=-2$

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2 years ago

There were 150 students wearing red shirts today. If there are a total of 300 students at school, about how many out of a class

alisha [4.7K]

Answer:

I think it's 15 students

Step-by-step explanation:

i think since 150 is half of 300 so in each class there should also be half of the people wearing red

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Step-by-step explanation:

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Step-by-step explanation:

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