Answer:
um
Step-by-step explanation:
I guess 1 and a half?? i dont quite understand
I believe the answer is B. 16.
Answer:
m=7
Step-by-step explanation:
Replace all occurrences of + − with a single -. A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because 1⋅
−
1
=
−
1
7(m-13)=-42
Divide each term by 7 and simplify.
m-13=-6
Move all terms not containing m to the right side of the equation.
m=7
Hope this helps!
Plz mark brainiest! =D
Answer:
(3, 1 )
Step-by-step explanation:
Given the 2 equations
x + 2y = 5 → (1)
3x + 5y = 14 → (2)
Rearrange (1) expressing x in terms of y by subtracting 2y from both sides
x = 5 - 2y → (3)
Substitute x = 5 - 2y in (2)
3(5 - 2y) + 5y = 14 ← distribute and simplify left side
15 - 6y + 5y = 14
15 - y = 14 ( subtract 15 from both sides )
- y = - 1 ( multiply both sides by - 1 )
y = 1
Substitute y = 1 into (3) and evaluate for x
x = 5 - (2 × 1) = 5 - 2 = 3
Solution is (3, 1 )
You could multiply that fraction by (1 hour / 3,600 seconds) .
(18,000 mile / 1 hour) x (1 hour / 3,600 second) =
(18,000 x 1) / (1 x 3,600) (mile-hour) / (hour-second) =
(18,000 / 3,600) (mile / second) = <span>5 mile/second
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