Answer:
So, if we start from some number k , k−1 means that we took 1 away from k , so k−1 is 1 less than k . Going on, k−2 is 2 less than k , and k−3 is 3 .
Step-by-step explanation:
Answer:
the answer is 8
Step-by-step explanation:
9 - 8 = 1
Answer:
A.
3x + 3y = 0
7x − y = 8
Step-by-step explanation:
Given
3x + 3y = 0
-4x + 4y = -8
Required
Find the equivalent
To solve for the equivalent we simply solve for x and y in the given equation.
Subtract 3x from both sides in 3x + 3y = 0
3x - 3x + 3y = 0 - 3x
3y = -3x
Multiply both sides by ⅓
⅓ * 3y = -3x * ⅓
y = -x
Substitute -x for y in -4x + 4y = -8
-4x + 4(-x) = -8
-4x -4x = -8
-8x = -8
Multiply both sides by -⅛
-⅛ * -8x = -⅛ * -8
x = 1
Recall that y = -x
y = -1
So, we have that x = 1 and y = -1
We'll substitute these values in the list of options;
A.
3x + 3y = 0
7x − y = 8
7(1) - -(1) = 8
7 + 1 = 8 ----- This is equivalent
B.
3x + 3y = 0
−7x − y = 8
-7(1) - (-1) = 8
-7 + 1 = 8
-6 ≠ 8 .... This is not an equivalent expression
C.
3x + 3y = 0
−7x + 7y = 8
-7(1) + 7(-1) = 8
-7 -7 = 8
-14 ≠ 8 .... This is also not an equivalent expression
D.
3x + 3y = 0
-4x + 7y = 8
-4(1) + 7(-1) = 8
-4 -7 = 8
-11 ≠ 8 -_- This is also not an equivalent expression
Answer:
A is the correct one
Step-by-step explanation:
The figure can be separate into a triangle, a rectangle and a trapezium.
Triangle:
Area = 1/2 x base x height
Area = 1/2 x 16 x (25 - 4) = 168 units²
Rectangle:
Area = length x Width
Area = 16 x 4 = 64 units²
Trapezium:
Area = 1/2 (a + b) x h
Area = 1/2 (25 + 15) (10) = 200 units²
Total Area = 200 + 64 + 168 = 432 units²
Answer: 432 units²
Answer:
the answer is 305
Step-by-step explanation:
yes because it did
1 meter.
remember, each 100 cm is equal to one meter. So,200 cm would be 2 meters
Answer: 1 m or 1 meter
B. 3h
C. 5h
D. 30 h
Answer:
The answer is c because 18,000 seconds is 300 minuets and 300 minuets is 5 hours.
Step-by-step explanation:
Option 3 is your answer- 5 hours