Answer:
The decrease of the decimal rate -1.05 mm/year can be rounded to -1. You don’t need to round 2.48 because you’re multiplying by -1. Since -1.05 is negative and rounded to a greater value, the estimate could be adjusted to a slightly lesser value, maybe -2.5 or -2.6.
Step-by-step explanation: I'm taking the test
Answer:
x = 1; y = 5
Step-by-step explanation:
-2x + 3y = 13
;
y = 7x - 2
Since the second equation is already solved for y, substitute y of the first equation with 7x - 2.
-2x + 3y = 13
-2x + 3(7x - 2) = 13
-2x + 21x - 6 = 13
19x - 6 = 13
19x = 19
x = 1
Now substitute x of the second equation with 1 and solve for y.
y = 7x - 2
y = 7(1) - 2
y = 7 - 2
y = 5
Solution: x = 1; y = 5
Answer:
3:9
Step-by-step explanation:
Answer:
180
180 because all three angles shows only because it is traingle
Answer:
Value of x=68
Step-by-step explanation:
Cause complementary angles are 2 angles that add to 90°
68°+22°=90°