Answer:
53/28
Step-by-step explanation:
100 g jam
- 19 g strawberries
- 53 g blackberries
- Sugar= 100-(19+53)= 28 g
Blackberry / sugar= 53/28
Answer:
Step-by-step explanation:
The pressure exerted by an object is given by:
where
F is the magnitude of the force
A is the area of the surface perpendicular to the force
In this problem, the force is the weight of the books + the shelf, which is given by
where
m = 262 kg is the total mass
is the acceleration of gravity
Substituting,
The area of the four legs is:
Therefore, the pressure exerted on them is:
Answer:
1. Teresa's expression s not equivalent because she did not multiply -7 and -4 correctly.
2. Bernette's expression is not an equivalent because she should multiply before subtracting.
3. Lucy's expression is equivalent because she distributed correctly.
Step-by-step explanation:
By definition, equivalent expression have the same value but they look different.
You can find equivalent expressions of any expression by simplifying.
In this case you have the following expression:
Then, you know that:
1. Teresa's answer is:
This is not an equivalent expression , because she did not multiply -7 and -4 correctly.
Remember that:
2. Bernette's answer is:
This is not an equivalent expression, because she should multiply before subtracting (She should apply the procedure Teresa applied)
3. Lucy's answer is:
This is an equivalent expression , because she distributed correctly (She multiplied each term inside the parentheses by -7)
Therefore, you can find an equivalent expression for the given expression by applying the Distributive property. Then: