20) How many grams of CaCI2 would be dissolved in 1.0 L of a 0.10 M solution of CaCI2?
21) How many grams of CaCl2 should be dissolved in 500.0 mL of water to make a 0.20M solution of CaCl2?
22) What mass of NaOH is on
250 mL of a 3.0M NaOH solution?
Answer:
-29x-5
Step-by-step explanation:
Use the distributive property 5(-5x - 1 ) so…
-25x - 5
-4x - 25x - 5
combine like terms: -29x - 5
so you’re answer is -29x - 5
i hope this helps :)
Answer:
9.5
Step-by-step explanation:
if you divide them
28.5÷3=9.5
38÷4=9.5
47.5÷5=9.5
57÷6=9.5
the constant proportionality is 9.5. They are equal.
Answer: of the burgers were well done
Step-by-step explanation:
Firstly, we are told that a total of 50 burgers were served at Kayla's Burgers, this represents the .
In additon, we are told 15 of that burgers were cooked well done and we need to know which percentage they represent. This can be calculated by the Rule of Three as follows:
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Then:
This means that of the burgers were well done
The cost function is a quadratic. The basic form of a quadratic equation is ax^2 + bx + c = 0. You must find the values of the coefficients a, b and c.
Use the given data to construct 3 simultaneous linear equations in x:
5 = a(2)^2 + b(2) + c
143 = a(4)^2 + b(4) + c
869 = a(10)^2 + b(10) + c
You must solve for a, b and c and then write the quadratic equation
y = ax^2 + bx + c that governs the production costs. Then let x=7 and calculate y, which is the figure you want.
Using matrices, I found that a=6.5, b=30 and c=-81.
Can you now write the quadratic equation and evaluate it at x = 7?