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nataly862011 [7]
3 years ago
13

Complete the missing value in the solution to the equation. ​ y = 3x -7 (1, ?,)

Mathematics
1 answer:
Luda [366]3 years ago
5 0

Answer: -4

Step-by-step explanation:

So, for y=3x-7, substitute the x with 1 (from (1,?) ) which gives you y=3(1)-7. Lastly, when you solve the equation, it would give you y=-4.

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3 years ago
Jina had 7/8 of a spool of yarn.she used 3/4 of it for her project.What fraction of the spool was used for her project
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3 years ago
*Help ASAP Please! Studying for finals and I'm stuck on this question!*
Nezavi [6.7K]
First I am going to assume that these are both right triangles based off of look and because it is much easier. Without it you have to use law of sines or law of cosines...
So to find x you must first find y which can be done simply by using the pythagorean theorem. This theorem is defined as the sum of the squared legs is equal to the sum of the hypotenuse or x^2 + y^2 = z^2

If we substitute in the known values 16^2 + y^2 = 20^2 and solve for y we get that y = sqrt(20^2 - 16^2), this then simplifies to y = 12

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