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lisabon 2012 [21]
3 years ago
9

Solve the system using elimination: 5x+4y=12 3x-3y=18

Mathematics
1 answer:
Stels [109]3 years ago
8 0
I hope this helps you

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In a class, there are 15 students. 8 of them like playing soccer, 6 of them like swimming, and 2 like both and swimming and play
Katena32 [7]
I think 3
There are 15 students
-8 like soccer
-6 like swimming
-2 like both
Well if there are 8 that like soccer and 6 that like swimming and 2 like both subtract 2 from the six because they like both they are counted twice
Add 8+4=12
15-12=3
So I think 3 out of the 15 kids don’t like either
3 0
4 years ago
Reduce the following fraction: -32abc/64a^2bc^2
mafiozo [28]

Answer:

-\dfrac{1}{2ac}

Step-by-step explanation:

Given:

\dfrac{-32abc}{64a^2bc^2}

Reduce this fraction.

Work with numbers and different letters separately:

1. Numbers:

\dfrac{-32}{64}=-\dfrac{32}{32\cdot 2}=-\dfrac{1}{2}

2. Letter a:

\dfrac{a}{a^2}=\dfrac{a}{a\cdot a}=\dfrac{1}{a}

3. Letter b:

\dfrac{b}b}=1

4. Letter c:

\dfrac{c}{c^2}=\dfrac{c}{c\cdot c}=\dfrac{1}{c}

Hence,

\dfrac{-32abc}{64a^2bc^2}=-\dfrac{1}{2}\cdot \dfrac{1}{a}\cdot \dfrac{1}{c}=-\dfrac{1}{2ac}

5 0
4 years ago
Read 2 more answers
Which of the following systems of inequalities would produce the region
Mnenie [13.5K]

Answer:

y > x + 1 ; y ≤ 10 ; x ≥ 0

Step-by-step explanation:

First, we need to get the equation of the straight line. The equation of the straight line is expressed as y = mx+c

m is the slope

c is the y-intercept

Using the coordinate points (0, 1) and (1,2)

m = (2-1)/(1-0)

m = 1/1 = 1

y-intercept c = 1 (the point where the line cuts the y-axis)

Substitute;

Since y = mx+c, then y = 1x + 1

y = x+1

Since the line is a broken line and shaded above, then y > x+1

Also, the point shaded on the graph indicates y ≤ 10 ; x ≥ 0

8 0
3 years ago
HELP ASAP !!! giving out the brainliest answer !!! plsss help (has to be correct )
Sav [38]

Answer:

Step-by-step explanation: brainly.com/question/22920148?answering=true&answeringSource=feedPublic%2FhomePage%2F1

3 0
3 years ago
Look at the attachment pls!!
Naddika [18.5K]

The terms -12x^2y and 4x^2y can be added to 3x^2y to result in a monomial.

Step-by-step explanation:

Given term is;

3x^2y

A monomial is an algebraic expression that consists of only one term.

So in the given expressions, we will add the terms which have same variables as given terms.

Given options are;

3xy\\-12x^2y\\2x^2y^2\\7xy^2\\-10x^2\\4x^2y\\3x^3

The terms -12x^2y and 4x^2y can be added to 3x^2y to result in a monomial.

4 0
3 years ago
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