They are similar by number. But they are not perpendicular. 3x+4y=12 gives you a negative slope. But 4x-3y gives you a positive slope. So they would be crossing each other if put together. This means that Sadia is correct and Henri isn’t. Show all work: 4x-3y=12
4x-3y+3y=12+3y
4x=3y+12
4x/4=3y+12/4
X=3/4y+3

3x+4y=12
3x+4y+-4y=12+-4y
3x=-4y+12
3x/3=-4y+12/3
X=-4/3y+4

3 0

3 years ago

This year, a teacher graded 83 more final exams than last year. If the teacher graded 625 final exams this year, how many final

Rina8888 [55]

Answer:

542

Step-by-step explanation:

So X is the number of finals graded by teacher last year

she graded 83 more finals than the last year

and the total number of finals she graded this year is 625 so we have an equation

X + 83 = 625

and as you solve it for X

X = 625-83

x = 542

5 0

2 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%20-%208x%20%2B%20y%7D%7B3%7D%20" id="TexFormula1" title=" \frac{ - 8x + y}{3} "

Nata [24]

The Slope is 8 and the y-intercept is (0,0)

3 0

3 years ago

Ronata is putting lace around the rectangular tablecloth with width of 52 and 1/3 inches and length of 72 and 2/3 inches. How mu

rodikova [14]

Answer:

3802 8/9

Step-by-step explanation:

So what you do is you make 52 1/3 and 72 2/3 improper fractions like 157/3 and 218/3. Then you multiply and get 34218/9. Then you simplafiy and get 3802 8/9

3 0

3 years ago