Answer: b
Step-by-step explanation:
In the last question, you wrote on a second equation "13x ...." kkk
Let's go:
We have to check each one answer in the following system:
x - 2y = 7
3x + 7y = 8
I can use the substituition method to solve this system...
x = 7 + 2y
3x + 7y = 8
3(7 + 2y) + 7y = 8
21 + 6y + 7y = 8
13y = 8 - 21
13y = -13
y = -1
x = 7 + 2.(-1)
x = 5
Finally, the correct answer is the second one (letter b).
Answer:
A. 2.40
B. 4
C. Costco is the better deal
Step-by-step explanation:
23.99/10= 2.399 (rounded to 2.40)
10/2.5 lbs (16 oz = 1 lb) = 4
Answer:
80
Step-by-step explanation:
We have, 75% × x = 60
or,
75/ 100 × x = 60
Multiplying both sides by 100 and dividing both sides by 75,
we have x = 60 × 100/75
x = 80
Isosceles triangle scalene triangle and equaliteral triangle
Answer:
44,51
Step-by-step explanation:
It is cut off, but according to the Order of Operations [GEMS(A)\BOMDAS\PEMDAS etc.], parentheses are dealt with first:
(13,1 × 3) + 5,21 = 44,51
39,3
Just like whole numbers, you multiply the exact same way.
I am joyous to assist you anytime.
