What is the value of m2-2mn+n2 for m=-2 and n=4
Answers
Answer: The required value is 36.
Step-by-step explanation: We are to find the value of the following expression for m = -2 and n = 4 :
Substituting the values m = -2 and n = 4 in the given expression, we get
Thus, the required value is 36.
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If an 8 pound bag of rice cost $9.60 , what is the cost of 1 pound of rice ?
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A.72
B.96
C.136
D.132
Answers
Answer:
The answer is 136 .
Answers
Answer:
The nurse should use 200cc of the 10% saline solution in order to produce a 20% saline solution.
Step-by-step explanation:
to the given mix we add a quantity of a lower mix to generate another.
50cc at 60% + Xcc at 10% = (50 + X)cc at 20%
50 x 60% + X x 10% = (50 + X) x 20%
30 + 0.1X = 10 + 0.2X
30 - 10 = 0.2X - 0.1X
20 = 0.1X
20/0.1 = X
X = 200
Final answer:
To produce a 20% saline solution, the nurse should use 200 cc of the 10% saline solution.
Explanation:
To find out how much of the 10% saline solution the nurse should use, we can set up an equation using the idea that the amount of saline in the mixture is equal to the sum of the amounts of saline in each solution.
Let's say the nurse uses x cc of the 10% saline solution. The amount of saline in the 60% saline solution will be 0.6 * 50 cc = 30 cc. The amount of saline in the 10% saline solution will be 0.1 * x cc = 0.1x cc.
Since the resulting solution is 20% saline, the total amount of saline in the mixture will be 0.2 * (50 + x) cc. Setting up the equation, we have 30 + 0.1x = 0.2 * (50 + x).
Simplifying the equation, we get 30 + 0.1x = 10 + 0.2x. Solving for x, we find that x = 200 cc.
Learn more about the Saline solution here:
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BCDE is rotated 180° clockwise to form PQRS.
JKLM is rotated 180° clockwise to form BCDE.
JKLM is rotated 180° counterclockwise to form BCDE.
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The transformations that took place are;
A: BCDE is rotated 180° counterclockwise to form JKLM.
B: BCDE is rotated 180° clockwise to form PQRS.
What is the transformation that took place?
We can see that the coordinates of Rectangle BCDE are;
B(2, 1); C(2, 2); D(4, 2); E(4, 1)
Now, for Rectangle JKLM, we see that the coordinates are;
J(-2, -1); K(-2, -2); L(-4, -2); M(-4, -1).
Now, for Rectangle PQRS, we see that the coordinates are;
P(-2, 1); Q(-2, 2); R(-4, 2); S(-4, 1).
We see the transformation from BCDE to JKLM as (x, y) → (-x, -y) and this is reflection over the x-axis which is 180° counterclockwise.
Read more about Transformation at; brainly.com/question/4289712
Answer:
actually, its 1 3 and 4 :nerd_emoji:
Step-by-step explanation:
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(−3,1)
(1,−3)
(3,1)
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Answer:
(- 3, 1 )
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
y - 1 = 2(x + 3) ← is in point- slope form
with (a, b) = (- 3, 1 )