system a system b 3x + 2y = 3 −x − 14y = 1 −2x − 8y = −1 −2x − 8y = −1
which of the following statements is correct about the two systems of equations?
the value of x for system b will be one-third of the value of x for system a because the coefficient of x in the first equation of system b is one third times the coefficient of x in the first equation of system a.
the value of x for system a will be equal to the value of y for system b because the first equation of system b is obtained by adding −4 to the first equation of system a and the second equations are identical.
they will have the same solution because they represent the same lines when plotted on the coordinate axes.
they will have the same solution because the first equation of system b is obtained by adding the first equation of system a to 2 times the second equation of system a.
definitely a. the others have almost all data points on one side of the line.
step-by-step explanation:
answered: Guest
the first one is x^2+2x+2
the second one is x^2+4
the last one is x^2-4x+8
answered: Guest
Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )
On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 10^4 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 10^5 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.