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ad-work [718]
3 years ago
7

I cant understand this.

Mathematics
1 answer:
djverab [1.8K]3 years ago
7 0
Multiply the top one by 3 for x, so you can eliminate x and find y

then plug in the y into one of the equations to find x
You might be interested in
Write an equivalent expression for 4(a+5)
Drupady [299]

\huge \boxed{4a+20}

We can do this using the distributive property, which states that a(b+c)=ab+ac.

Distribute the 4 to the a and the 5. 4a+4(5)

Multiply. \displaystyle \boxed{4a+20}

8 0
3 years ago
Helpppppppppppppppppp
Semenov [28]

Answer and Step-by-step explanation:

The independent variable is m, and the dependent variable is h.

This is because you can plug in any value for m, making m NOT have to depend on any other value to become m.

With h, it needs the result of m and its other values to become the result of h. H relies/depends on the values in the equation to become a value.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

7 0
3 years ago
simplify 4 times the square root of 6 divided by the square root of 30 by rationalizing the denominator. show your work.
solniwko [45]

Answer:

4*\sqrt{5}/5

Step-by-step explanation:

(4*\sqrt{6})/\sqrt{30}

This is my interpretation, although the question could also be interpreted as 4 * (\sqrt{6}/\sqrt{30})

Multiply the nominator and denominator by sqrt 30

4* sqrt 6 * sqrt 30/ 30

4 * sqrt 6 * sqrt 6 * sqrt 5/30

24*sqrt 5 / 30

4*sqrt5/5

4 0
2 years ago
What one is it?? Because I am having a hard time figuring it out. If anyone could help it would mean a lot, thanks
hichkok12 [17]

Answer:

the first one

Step-by-step explanation:

5 0
3 years ago
1.What is a negative times a positive 2. A Positive times positive 3. A negative times a negative 4.What is a negative divided b
Lisa [10]

Answer:

See below.

Step-by-step explanation:

In multiplication and division of two numbers:

equal signs equal positive

different signs equal negative

Now you can answer every question.

1. What is a negative times a positive <em>different signs </em>negative

2. A Positive times positive <em>equal signs </em>positive

3. A negative times a negative <em>equal signs </em>positive

4. What is a negative divided by a positive <em>different signs </em>negative

5. A Positive divided by positive <em>equal signs </em>positive

6. A negative divided by a negative <em>equal signs </em>positive

4 0
3 years ago
Read 2 more answers
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