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3 years ago

Help me in math tasks please

Mathematics

1 answer:

Ivan3 years ago

3 0

Answer:

1. 3/5 c

2. 7 c

3. 2/5 b

4. $3.24 c

5. -3.2 b

Step-by-step explanation:

2/5 + 1/5 = 3/5

a negative + a negative = a positive

2+5 = 7

terminating means the decimal ends. When u divide a & c they keep on going but 2/5 ends

divide 16.8 by 5.19 = 3.23 round up so 3.24

multiply the two together to get the answer

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URGENT WILL MARK BRAINLIEST <br>Show your work and solve for x and y.<br>3x + y = 8<br>2x + 4y = 12

mars1129 [50]

3x+y=8--(1)

2x+4y=12

x+2y=6--(2)

(1)×1 and (2)×3

$\\ \rm\Rrightarrow 3x+y=8$

$\\ \rm\Rrightarrow 3x+6y=18$

Subtract both

$\\ \rm\Rrightarrow -5y=-10$

$\\ \rm\Rrightarrow y=\dfrac{-10}{-5}$

$\\ \rm\Rrightarrow y=2$

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$\\ \rm\Rrightarrow x+2(2)=6$

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Answer:

Step-by-step explanation:

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3 years ago

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4 years ago

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Answer the Question below (45 points)

iren [92.7K]

3x-5=-6x+13 : Given

3x=-6x+18 : Addition property of Equality

9x=18: Subtraction property of Equality

x=2: Division Property of Equality

Step-by-step explanation:

We need to give justification to each step

Step 1:

3x-5=-6x+13

This is the question given, which we need to solve and find value of x.

Justification: Given

Step 2:

Adding 5 on both sides of the equation using addition property of equality.

3x-5+5=-6x+13+5

Simplifying

3x=-6x+18

Justification: Addition property of Equality

Step 3:

Adding 6x on both sides of the equation

3x+6x=-6x+18+6x

9x=18

Justification: Subtraction property of Equality

Step 4:

Divide both sides of the equation by 9, to find the value of x using division property of equality

9x/9=18/9

x=2

Justification: Division Property of Equality

Keywords: Solving Equations

Learn more about Solving Equations at:

#learnwithBrainly

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Help me in math tasks please​

Help me in math tasks please