I think using a computer software would be the best answer because it is then fair
If he answered 3 questions correctly, then the number of questions is got wrong is 7 and the number of questions that he did not attempt is 5.
<h3>What is the linear system?</h3>
A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.
In a class test of 15 questions, (+4) marks are given for every correct answer, (– 2) marks are given for every incorrect answer, and 0 marks are given for questions that are not attempted. Punit scored (– 2) marks.
If he answered 3 questions correctly, then the number of the question are got wrong and the number of the question that he did not attempt.
Let x be the correct question and y be the incorrect question, z be the number of questions that he did not attempt, and A be the number of the total score. Then we have
4x – 2z = A
x + y + z = 15
If A = -2 and x = 3, then we have
4 × 3 – 2z = -2
12 + 2 = 2z
z = 7
Then the value of y will be
3 + y + 7 = 15
y = 5
More about the linear system link is given below.
brainly.com/question/20379472
#SPJ1
If the polygons are similar then the sides are in proportion.
![\dfrac{32}{24}=\dfrac{32:8}{24:8}=\dfrac{4}{3}](https://tex.z-dn.net/?f=%5Cdfrac%7B32%7D%7B24%7D%3D%5Cdfrac%7B32%3A8%7D%7B24%3A8%7D%3D%5Cdfrac%7B4%7D%7B3%7D)
Therefore we have the equations:
![\dfrac{x-1}{6}=\dfrac{4}{3}\qquad\text{cross multiply}\\\\3(x-1)=(4)(6)\\\\3x-3=24\qquad\text{add 3 to both sides}\\\\3x=27\qquad\text{divide both sides by 3}\\\\\boxed{x=9}](https://tex.z-dn.net/?f=%5Cdfrac%7Bx-1%7D%7B6%7D%3D%5Cdfrac%7B4%7D%7B3%7D%5Cqquad%5Ctext%7Bcross%20multiply%7D%5C%5C%5C%5C3%28x-1%29%3D%284%29%286%29%5C%5C%5C%5C3x-3%3D24%5Cqquad%5Ctext%7Badd%203%20to%20both%20sides%7D%5C%5C%5C%5C3x%3D27%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%203%7D%5C%5C%5C%5C%5Cboxed%7Bx%3D9%7D)
![\dfrac{y+1}{21}=\dfrac{4}{3}\qquad\text{cross multiply}\\\\3(y+1)=(21)(4)\\\\3y+3=84\qquad\text{subtract 3 from both sides}\\\\3y=81\qquad\text{divide both sides by 3}\\\\\boxed{y=27}](https://tex.z-dn.net/?f=%5Cdfrac%7By%2B1%7D%7B21%7D%3D%5Cdfrac%7B4%7D%7B3%7D%5Cqquad%5Ctext%7Bcross%20multiply%7D%5C%5C%5C%5C3%28y%2B1%29%3D%2821%29%284%29%5C%5C%5C%5C3y%2B3%3D84%5Cqquad%5Ctext%7Bsubtract%203%20from%20both%20sides%7D%5C%5C%5C%5C3y%3D81%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%203%7D%5C%5C%5C%5C%5Cboxed%7By%3D27%7D)
Answer:
The answer is a Whole number which would be 7.
Step-by-step explanation:
If he need one pound of cheese for each pizza and he has seven pounds of cheese then he would be able to make 7 pizzas.