Answer:
Calcium in a cup of milk x = 330 mg
Calcium in cup of spinach y = 150 mg
Step-by-step explanation:
Let call " x " and " y " quantity of calcium ( in mg ) in a cup of milk, and spinach respectively, then according to problem statement we have:
3*x + 1*y = 1140 and 2*x + 2*y = 960
We have a two equation system, we need to solve for x and y then:
y = 1140 - 3*x
2*x + 2 * ( 1140 - 3*x ) = 960
2*x + 2280 - 6*x = 960
-4*x = - 2280 + 960
-4*x = - 1320
x = 1320 / 4 ⇒ x = 330 mg
And y = 1140 - 3*x
y = 1140 - 3* 330 ⇒ y = 1140 - 990 ⇒ y = 150 mg
The answer is 16 for 45-29
Answer:
4/25
Step-by-step explanation:
4/5 ÷ 5 = 4/5 × 1/5 = 4/25
Answer:
C
Step-by-step explanation:
Bc at the beginning of p2, it states that something exciting was about to happen.
was <u>ABOUT = </u> Something is going to happen in the future
Hope that helps!
Answer:
12/(7-4) + 5 * 3 = 19
Step-by-step explanation:
Given
Untrue Expression: 12 ( 7 − 4 ) + 5 3 = 19
Signs: +−×÷
Required
Use the given signs to make the equation true.
To solve this, the trial and error method will be adopted.
The trial and error method involves trying series of sign combinations in the given expression; whichever works is the right answer.
So, after few attempts the following makes the equation true
12/(7-4) + 5 * 3 = 19
To check if it's true or not; we simply expand the expression on the left hand side. This gives
12/3 + 5 * 3 = 19
4 + 5 * 3 = 19
4 + 15 = 19
19 = 19.
Hence, the sign combinations used in 12/(7-4) + 5 * 3 = 19 is correct.
