3 years ago

Guys helpppp!!!

Mathematics

1 answer:

aivan3 [116]3 years ago

4 0

Answer:

High negative

Step-by-step explanation:

The dots are close together and they are going down left to right indicating it’s negative

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Solve using substitution x=(3y+1) and x+4y=15

natka813 [3]

The solution is: x= 7 and y = 2

Step-by-step explanation:

Given equations are:

$x = 3y+1\ \ \ \ Eqn\ 1\\x+4y = 15\ \ \ \ Eqn\ 2$

Putting x = 3y+1 in equation 2 from equation 1

$3y+1+4y = 15\\7y+1 = 15\\$

Subtracting 1 from both sides

$7y+1-1 = 15-1\\7y = 14$

Dividing both sides by 7

$\frac{7y}{7} =\frac{14}{7}\\y = 2$

Putting y=2 in equation 1

$x = 3(2) +1\\x = 6+1\\x = 7$

Hence,

The solution is: x= 7 and y = 2

Keywords: Linear equations, substitution method

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago

Your job is to sort and sack marbles for sale. A bag contains 55 marbles, some red and some green. If there are 11 red marbles,

vovikov84 [41]

Total of 55 marbles.....if there are 11 red marbles, then there are (55 - 11) = 44 green marbles. So the ratio of red marbles to green marbles is :
11:44 which reduces to 1:4 or 1/4 or 1 to 4

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3 years ago

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Topic: Solving exponential equations. Solve for the value of x. 1. 5^x+1= 5^2x-3

liraira [26]

X= 0.2034394 or 14.50799581 . I hope this helps

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3 years ago

What is 4.2 divided by 20.076

faust18 [17]

Answer:

0.209205

Step-by-step explanation:

I put it in the calculator and got this...

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3 years ago

The product of x and its opposite is always 1.<br> O True<br> O False

kari74 [83]

Answer:

False

Step-by-step explanation:

The opposite of x is -x

x* -x = -x^2

This is not always 1

3 0

2 years ago

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