Both of your answers are correct. In the first equation, if you were to substitute 3 for x, because you have to do exponents first, you have 3^2, which is 9, and 9*6 =54. If you were to substitute -3 for x again you would have to do the exponents first which would be -3^2 which is 9, and 9*6 = 54.
For the second question, if I substitute 0.75 for t, I get -9 + 18 + 7. This is equal to 16, and therefore the answer would be D. Hope this helps! :D. Let me know if you have questions about my explanation, and feel free to post more questions.
2/5x=-20
x=-50
Explanation:
Whenever you take the 2/5 and divide it from -20 you are left with x=-50. Therefore, the value for x is -50.
Yes I think your correct I don’t really understand the question ..
Answer: The answer is D
Step-by-step explanation: Take the height x 1.5 and base x 1.5
Answer:
Length = 16 inches
Width = 32 inches
Step-by-step explanation:
Width of the frame is represented by x and length by y inches. It is given that length of the frame is twice the width. This means y is twice of x. So, we can write the equation as:
y = 2x Equation 1
Perimeter of a rectangle is defined as:
Perimeter = 2 ( Length + Width )
Since, perimeter of the picture frame is equal to 96, we can write the equation as:
2(x + y) = 96 Equation 2
Substituting the value of y from Equation 1 in Equation 2, we get:
2(x + 2x) = 96
2(3x) = 96
6x = 96
x = 16
Substituting the value of x in Equation 1, we get:
y = 2x = 2(16) = 32
This means, the length of the rectangular picture frame is 16 inches and its width is 32 inches.
