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andriy [413]
3 years ago
13

3x+2y=-4 y= 4x-2 use substitution

Mathematics
2 answers:
Grace [21]3 years ago
4 0
(X,Y) = (0,-2)
Substitute the given value of y and x into the equation and simplify
lawyer [7]3 years ago
4 0

Answer: x = 0 and y = -2

Step-by-step explanation:

3x+2y=-4  ............................. equation 1

y=4x-2  ............................... equation 2

Using substitution method

substitute y=4x-2 into equation 1 , equation 1 then becomes

3x + 2(4x-2) = -4

3x+8x-4 = -4

11x-4=-4

add 4 to both sides

11x = 0

therefore:

x = 0

substitute x = 0 into equation 2 to find the value of y

y = 4x - 2

y = 4(0) - 2

y = -2

therefore:

x = 0 and y = -2

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Arisa [49]
I might be wrong but I think zeptosecond comes first then s nanosecond and then a millisecond.
5 0
3 years ago
Simplify: 5y-3/12y - y-5/20y:<br><br> <img src="https://tex.z-dn.net/?f=%5Cfrac%7B5y-3%7D%7B12y%7D%20-%5Cfrac%7By-5%7D%7B20y%7D"
Damm [24]

Answer:

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6 0
3 years ago
I Need The Answer Plz!!! Geometry Is Hard!!
prohojiy [21]

Answer:

12√5

Step-by-step explanation:

According to the attached sketch, there are 2 triangles which we need to focus on, triangle A (in yellow) and triangle B (In red).

If you look at triangle A, we notice that X is the hypotenuse of triangle A. This means that X must be the largest length in triangle A, hence we can say that x must be greater than 24 (or 24 < x)

Now look at triangle B, in this case, they hypotenuse is 30 and x is the length of one of the sides. This means that x must be shorter than the hypotenuse (i.e x < 30)

from the 2 paragraphs above, we can see now that we can assemble an inequality in x

24 < x < 30

If we look at the choices, we can immediately ignore 33 because x must be less than 30,

working out the choices, we find that the only choice which falls into the range 24<x<30 is the 2nd choice 12√5  (= 26.83)  (which is the answer)

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8 0
3 years ago
What is the rate of change
kow [346]
The average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.
3 0
2 years ago
Read 2 more answers
Please help me I will give BRAINLIST and a like :))))
Vlada [557]

Answer:

18.75%

Step-by-step explanation:

Hello,

3 students are both female and senior

the total number of students is 7+10+8+5=30

so the probability to select one female senior is 3/30=1/10=0.10

probability to select one female is 16/30=16/30

probability that the student is a senior given that it's female is

=P(female and senior)/P(female)

=1/10*30/16=3/16

hope this helps

5 0
3 years ago
Read 2 more answers
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