3 years ago

Look at the picture nd hurry please it needs to be done by 3 I have to do reading too!

Mathematics

1 answer:

Genrish500 [490]3 years ago

3 0

Answer:

First one

Step-by-step explanation:

Even numbers

2 is tossed 10 times

4 is tossed 10 times

6 is tossed 9 times

10 + 10 + 9 = 29

Odd numbers

1 is tossed 8 times

3 is tossed 6 times

5 is toosed 7 times

8 + 6 + 7 = 21

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Y=4x and 3x+y=-21. Substitute

gizmo_the_mogwai [7]

value of x= -3 and value of y = -12

Solution set is (-3,-12)

Step-by-step explanation:

We need to solve the system of equations using substitution

The system of equations are:

$y=4x\\3x+y=-21$

Solving:

Let

$y=4x\,\,eq(1)\\3x+y=-21\,\,eq(2)$

Solving:

Putting value of y from equation 1 into equation 2

$3x+y=-21\\3x+4x=-21\\7x=-21\\x=-21/7\\x=-3$

So, value of x = -3

Now, putting value of x into equation 1 and find value of y

$y=4x\\y=4(-3)\\y=-12$

Value of y = -12

So, value of x= -3 and value of y = -12

Solution set is (-3,-12)

Keywords: System of equations

Learn more about system of equations at:

#learnwithBrainly

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