First, you need to know what the lines | | mean.
| | around a number means the absolute value.
The inequality is |y|>6
This means that the absolute value of y is greater than 6.
Now, we need to find the absolute value of the choices.
A. y=-7
|-7| is 7
B. y=-1
|-1| is 1
C. y=3
|3| is 3
D. y=9
|9| is 9
Now, we find which of the absolute values work in the inequality.
7 is greater than 6, so that works
1 is less than 6, so it doesn't work.
3 is also less than 6, so that too doesn't work.
9 is greater than 6, so the one will work.
Therefore, choices A and D satisfy the inequality of |y|>6, because |-7|>6, and |9|>6.
Put other y in the other equation
so u got: 4x-2=-3+5
4x-2=2
4x =4
x =1
Now put x in the equation
so u do like this: y=4(1)-2
y=2
solution is (1,2) good luck
Answer:
The first equation should be multiplied by 9 and the second equation by −4
Step-by-step explanation:
Given the simultaneous equation
First Equation: 5x − 4y = 28
Second equation: 3x - 9y = 30
In order to eliminate y, we must make the coefficient of x in both expression to be equal.
To do that the first equation should be multiplied by 9 (negative value of the coefficient of y in equation 2)and the second equation by -4( (coefficient of y in equation 1)
Answer:
6 cm. triangles have 3 sides, and total length is 18 cm. divide 18 by 3 equal sides to get 6 cm
Answer:
D. y[9]=15.5410
Step-by-step explanation:
Let's find the answer by using the following observation:
Notice that the y-value differences between consecutives obstacles are:
(y-value from obstacule 2) - (y-value from obstacule 1)= 7.975 - 7.25 = 0.725
which is equal to:
(y-value from obstacule 1) / 10 = 7.25 / 10 = 0.725
So, an equation can be written as follows:
y[i+1]=y[i]+y[i]/10 let's find the other values:
y[2]=7.25+(7.25/10)= 7.975
y[3]=7.975+(7.975/10)= 8.7725
y[4]=8.7725+(8.7725/10)= 9.64975
Notice that we obtained the same y-values using the formula as the ones reported. So using the same formulas we can calculate:
y[9]=15.5410
In conclusion, the general equation is y[i+1]=y[i]+y[i]/10 with a starting point (1, 7.25) and y[9]=15.5410. So the answer is D.