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motikmotik
3 years ago
11

X-3y=16 4x-y=19 Substitution / Will mark brainliest ASAP

Mathematics
1 answer:
torisob [31]3 years ago
7 0

Answer:

y = 4(1) - 1 = 3

Step-by-step explanation:

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Write an equation to show the height of the two buildings are equal to each other. Then solve for x. Show all your steps when so
Ierofanga [76]

Answer:

X = 108.

Step-by-step explanation:

Heights are equal, So equation will be,

4 + 3 \sqrt{x - 8}  = 34

So, solving the eq.

Subtract 4 from both sides ,

3 \sqrt{x - 8}  = 30

Divide 3 to both sides,

\sqrt{x - 8}  = 10

Squaring both sides,

x - 8 = 100

Add 8 to both sides,

x = 108

8 0
3 years ago
What is an rational number
Ahat [919]
A rational number is a number that can be written into a fraction. pi, some square roots, e, etc., are irrational numbers(numbers that cannot be written into a fraction).
8 0
3 years ago
Read 2 more answers
How can you analyze connections between linear equations and use them to solve problems
Alexeev081 [22]

Answer:

Step-by-step explanation:

One of the more obvious "connections" between linear equations is the presence of the same two variables (e. g., x and y) in these equations.

Assuming that your two equations are distinct (neither is merely a multiple of the other), we can use the "elimination by addition and subtraction" method to eliminate one variable, leaving us with an equation in one variable, solve this 1-variable (e. g., in x) equation, and then use the resulting value in the other equation to find the value of the other variable (e. g., y).  By doing this we find a unique solution (a, b) that satisfies both original equations.  Not only that, but also this solution (a, b) will also satisfy both of the original linear equations.

I urge you to think about what you mean by "analyze connections."  

6 0
3 years ago
Four of you enter in the race. You are told that only one will complete the course. What is the probability if you complete the
sergey [27]

Answer:

25% probability that you complete the course

75% probability that you do not complete the course

Step-by-step explanation:

If there are a total of 4 individuals entering the race and only one is able to complete the course then the probability that you will complete the course would be

1/4 = 0.25 or 25%

This is because you only represent 1 out of the 4 total participants. The opposite would be the case to calculate the probability that you will not complete the course since there are three other candidates with that could have completed it, therefore...

3/4 = 0.75 or 75%

4 0
3 years ago
Bob is driving along a straight and level road toward a mountain. At some point on his trip, he measures the angle of elevation
avanturin [10]

Answer:

5353 ft

Step-by-step explanation:

We have height of the mountain = x

We also have

tan (21°44')= x/13428.7 → x=5352.98ft

Height of the mountain to the nearest foot = 5353 ft

Hope this helps ʕ•ᴥ•ʔ

3 0
3 years ago
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