Step-by-step explanation:
So, we will take one of the numbers = x
And the other is 12 more than 3 times it, so = 3x + 12
So they said if we add them, we will get 4
So x + (3x + 12) = 4
4x + 12 = 4
4x = 4 - 12
4x = - 8
x = - 8 ÷4
x = - 2
So one of the numbers x = - 2
The other is 3x + 12
So x = - 2
3x +12 = 3(-2) + 12
= 6
So the 2 numbers = 6 and - 2
Lets check!
6 + (-2) = 4
So it's right!
2x-3y=13
x+2y=-4
First times the second problum by 2.
2x-3y=13
2(x+2y=-4)
Your new problum is
2x-3y=13
2x+4y=-8
Now subtract both problums
2x-3y=13
-2x+4y=-8
------------------
-7y=-21
Now divde the -7 on both sides.
-7y=-21
/7 /-7
---------------
y=2
Now you want to substitute the y for the 2 in on of your problums.
x+2(2)=-4
Now mutiplie the 2 by the 2
x+4=-4
Now subtract the 4 on both sides to solve for x.
x+4=-4
-4 -4
--------------
x=-8
The statement that is not true about the given trigonometric graph is; Option A: The vertical phase shift of y = 3 sin(-5x - π/2) - 6 is; π/5
<h3>How to Interpret Trigonometric Graphs?</h3>
Let us analyze the options;
A) For the give equation;
y = 3 sin(-5x - π/2) - 6
From the general equation given we can say that;
A = 3
B = 5
C = -π/2
D = -6
Thus, phase shift = C/B = -(π/2)/5
Phase Shift = -π/10.
Thus, option A is not correct.
B) Period = 2π/B
Thus; Period = 2π/5
Formula for frequency from period is;
Frequency = 1/period
Thus, it is correct that Period and frequency vary indirectly
C) As B gets bigger, the period gets smaller and the frequency gets greater. Thus, this option is correct
D) This statement is correct.
Read more about Trigonometric Graphs at; brainly.com/question/10700288
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Answer: D)
Step-by-step explanation: It starts around the middle of the Y axis which means the fixed price that they were talking about. Then the arrow keeps going which indicates the hourly rate.
Answer:
A and B are correct
Step-by-step explanation:
Student C is wrong because they broke up 3/4 into
2/2 + 1/2
but 2/2 + 1/2 = 3/2, which is not equal to 3/4