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4 years ago

I'm not sure how to do this

Mathematics

1 answer:

valentinak56 [21]4 years ago

3 0

Well for 11, it is an inequality, a > sign or < sign with a little underscore mean either "greater than or equal to" or "less then or equal to" so 30> 12+m (>with an underscore) means 30 is greater than or equal to 12+m

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Negative 5x plus 4y equals 3 i need x and y please

Andru [333]

Answer:

x = 9

y = 12

Step-by-step explanation:

-5x + 4y = 3

x = 2y - 15

Manipulate the equations such that the coefficients of two variables are additive inverses

-5x + 4y = 3

x = 2y - 15

Inverse operations

-> 4y - 3 = 5x

-> 2y - 15 = x (*(-5))

->4y - 3 = 5x

-> -10y + 75 = -5x

Now add the equations to eliminate a variable,

4y - 3 = 5x

-10y + 75 = -5x

-6y + 72 = 0

Inverse operations

-6y + 72 = 0

72 = 6y

/6 /6

12 = y

Back solve to find (x)

2y - 15 = x

2(12) - 15 = x

24 - 15 = x

9 = x

3 0

3 years ago

On your own paper, graph the system of equations and identify the solution:

notsponge [240]

The equations y = 3x - 4 and y = 3x + 1 are linear equations

The equations have no solution

<h3>How to determine the solution of the equations?</h3>

The equations are given as:

y = 3x - 4

y = 3x + 1

Next, we plot the graph of the equations y = 3x - 4 and y = 3x + 1

From the graph (see attachment), we can see that the equations do not have a point of intersection

Hence, the equations has no solution

Read more about linear equations at:

brainly.com/question/14323743

8 0

2 years ago

Which inequality is NOT true if y = -5?

sertanlavr [38]

Answer:

c is the answer

Step-by-step explanation:

solution

$3y + 9 \geqslant - 15$

$3( - 5) + 9 \geqslant - 15$

$- 15 + 9 \geqslant - 15$

$- 6 \geqslant - 15$

therefore the equation is not true

6 0

3 years ago

A grocery store sells a 6-pack of bottled water for $3.79 and a 12-pack of water for $6.89.

Tatiana [17]

$6 \div 3.79 = 1.58$
$1.58 per bottle
$12 \div 6.89 = 1.74$
$1.74 per bottle
the first package costs the least per bottle!

7 0

3 years ago

3x/4=6/5 solve the equation for x

Luba_88 [7]

Answer:

x = 8/5

Step-by-step explanation:

3x/4 = 6/5

15x = 24 (Use the common denominator 20. After everything is under 20, it doesn't really matter if you have it in the equation.)

x = 24/15

x = 8/5

8 0

2 years ago

Read 2 more answers