X=23
I say this because you can see that the scale factor is 3 due to just visually scaling both the long and short leg from the original triangle to the dilated triangle. Dividing 39 by 3 is 13, and doing it in reverse. Adding 10 would equal 23, the initial value. So that'd be the missing value.
Answer:
an infinite number
Step-by-step explanation:
This equation has a graph that is a line. Every point on the line is a solution.
There are an infinite number of solutions.
I hope this helps you
x^3= -8^3
x= -8
Answer:
x=8.499
y=0.167
Step-by-step explanation:
the equation says:x^2-9y^2=72....(1)
x+3y=9.......(2)
divide (2) from (1),it becomes:
x-3y=8
making x subject of formula,
x=8+3y....(3)
submitting (3) into (1),it becomes
(8+3y)^2-9y^2=72
64+48y=72
48y=72-64=8
y=8/48=0.167......(4)
submitting (4) into (2),it becomes
x+3(0.167)=9
x+0.501=9
x=9-0.501
x=8.499
Answer: 1/4
Step-by-step explanation:
If you are multiplying exponents that have the same base(the are both 4 to...),
keep the base the same, and add the exponents. In this case, 4^3*4^-4 would come out to 1/4. You never never never never want negative exponents. To get rid of them, use the recipricole. 4^-4 is the same as 1/256.
If the bases are not the same and the exponents are the same, do this:x^a*y^a=(xy)^a. Multiply the bases together, and keep the exponent the same.
