Calisickleroye9vh also answer this is last one thx
1 answer:
Answer:
see below
Step-by-step explanation:
You can add any multiple of one equation to the other without changing the solution to the system.
In the first answer choice the first equation is added to the second, and the first equation is left alone.
In the third answer choice, the first equation is subtracted from the second, and the second equation is left alone.
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The other answer choices have strange combinations of sums and differences that result in systems of equations with different answers.
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Answer:
x=3.5
Step-by-step explanation:
You can find x by finding the hypotenuse of that triangle, which is the leg of the other triangle. Find the value of the leg first:
You can use the sine ratio to find the leg. This is because and we have the hypotenuse for that triangle and we need to find the side opposite the given angle, 45°. Insert values:
Solve for x. Multiply both sides by 7:
Enter the value into a calculator:
The leg is 4.9. Use this to solve for the next x. Use the sine ratio for the same reason. Insert values:
Solve for x. Multiply both sides by 4.9:
Insert into a calculator:
Finito.