2 years ago

3x + 8y = 85 7x -2y =33 (solve the following equations)

2 answers:

8 0

3x+8y=85
7x-2y=33

4(7x-2y=33)
28x-8y=132
+3x+8y=85

31x=217
__ ___
31 31

X= 7

7(7)-2y=33
49-2y=33
-2y=-16
______
-2

Y=8

(7,8)

Stella [2.4K]2 years ago

5 0

What is it that you are looking for ?
x or y ?

You might be interested in

Encuentre el valor de la variable en la siguiente ecuación 4−x7=−8

melisa1 [442]

Answer:

x = 1.71428571429 (1.7)

Step-by-step explanation:

4 - 7x= -8

-4 -4

-7x = -12

/-7 /-7

x = 1.71428571429

x = 1.7

7 0

2 years ago

Help and I’ll give brainliest

Vaselesa [24]

Answer:

They purchased 11 Packets

Step-by-step explanation:

C=11p + 30

6 0

2 years ago

2√6 ∙ √8 + 2√12 show your work please and thank you

meriva

Answer:

Step-by-step explanation:

multiply first,

so 2√6 x √8 = 2√48 (because when radicals are multiplied we add them)

2√48 can be simplified to 8√3 and 2√12 can be simplified to 4√3

8√3+4√3=12√3

8 0

2 years ago

A section of a deck is shaped like a trapezoid. For this section, the length of one base is 35 feet, and the

Sindrei [870]

Answer:

Step-by-step explanation:

a = 35 feet

b = 54 feet

h = 28 feet

$Area=\frac{[a+b]*h}{2}\\\\=\frac{[35+54]*28}{2}\\\\=\frac{89*28}{2}\\\\=89*14\\\\$

= 1246 square feet

3 0

2 years ago

Find the amount of time in years. I=$100, P=$200, r=10%

lara31 [8.8K]

Answer:

How many years????????

4 0

2 years ago