All categories

2 years ago

HELP Solve the following systems using the elimination method. 5x+2y = -16 4x-2y = 16

Mathematics

2 answers:

velikii [3]2 years ago

3 0

Answer:

x= 0 , y= -8

Step-by-step explanation:

Add the 2 equations together, you would get:

9x = 0

Divide both sides by 9:

x = 0/9

x=0

Substitute the value of x in one of the equations to get the value of y, I picked the first one (5x+2y = -16)

5(0) +2y = -16

0+2y = -16

2y = -16

Divide both sides by 2:

y = -8

Lilit [14]2 years ago

3 0

2y - 2y (can Lea each other our)
Add 5x + 4x = 9x
-16 + 16 = 0
9x / 0
X=0

You might be interested in

Equation practice with angle addition please help guys ❤

Lerok [7]

Hope this will help u....

3 0

3 years ago

Solve for the value of m. 73°(6m-1)º

melomori [17]

Step-by-step explanation:

6m-1+73=180 (linear pair)

6m+72=180

6m=180-72

6m=108

m=108/6

m=18°

8 0

2 years ago

Arturo buys 3 containers of ice cream for $5 each and

natima [27]

Answer:B

Step-by-step explanation: In order to figure out which equation this is you will need to first read that the question says Arturo buys 3 containers of ice cream and each one is $5 so that's how you get (3 x $5) and he also buys the $8 Cake so you have to add that in too which gets you to (3 x $5) + $8.

3 0

2 years ago

Please help:Use the distributive property to simplify each expression.

Rashid [163]

Answer:

a. 63k + 42m

b. -72 + 30c

c. 6e + 6f - 237

Hope this was helpful :-)

3 0

3 years ago

At a certain gas station 40% of the customers request regular gas, 35% request unleaded gas, and 25% request premium gas. Of tho

Temka [501]

Answer:

51.38% probability that they requested regular gas

Step-by-step explanation:

Bayes Theorem:

Two events, A and B.

$P(B|A) = \frac{P(B)*P(A|B)}{P(A)}$

In which P(B|A) is the probability of B happening when A has happened and P(A|B) is the probability of A happening when B has happened.

In this question, we have that:

Event A: Not filling the tank

Event B: Regular gas

40% of the customers request regular gas

This means that $P(B) = 0.4$

Of those customers requesting regular gas, 70% only fill up part of their tank.

This means that $P(A|B) = 0.7$

Probability of not filling the tank:

70% of 40%(regular gas)

100 - 60 = 40% of 35%(unleaded gas).

100 - 50 = 50% of 25%(premium gas).

$P(A) = 0.7*0.4 + 0.4*0.35 + 0.5*0.25 = 0.545$

What is the probability that they requested regular gas?

$P(B|A) = \frac{0.4*0.7}{0.545}$ = 0.5138

51.38% probability that they requested regular gas

5 0

3 years ago