Answer:
x = -2
y = 3
Step-by-step explanation:
Write the system the following way:
4x + 5y = 7
-3x +y = 9
we need to eliminate one unknown by multiplying one equation for a suitable number in such a way that when we add the equations one unknown is eliminated.
If we multiply the second eq. by -5 the y is eliminated
4x + 5y = 7
15x -5y = -45
add the equations
19x = -38 ===> x = -38/19 ===> x = -2
Now replace this value in any equation to get y. For example, in 1st one.
4(-2) + 5y = 7 ===> -8 +5y = 7 ===> 5y = 7+8 ===> 5y = 15 ===> y = 15/5 ===>
y=3
Answer:
C.
Step-by-step explanation:
a a cosine and sine have to add up to 90. so subtracting 33 from 90 gives you 57 your answer would be cosine 57
15/16 = 0.9375
90% = 0.9
0.925 = 0.925
7/8 = 0.875
.92 = .92
0.875, 0.9, 0.92, 0.925, 0.9375
least to greatest = 7/8, 90%, .92, 0.925, 15/16
3 2/3 = 3.666666666666667
362% = 36.2
3.66 = 3.66
3 3/5 = 3.6
36
3.6, 3.66, 3.666666666666667, 36, 36.2
3 3/5, 3.66, 3 2/3, 36, 36.2
Answer:
Its the last option
y = 1488.33x + 23800 ; $172,600.
Step-by-step explanation:
The slope of the trend line = (median value for 2000 - median value for 1940) / 60
= 89300 / 60
= 1488.33.
So the equation is 1488.33x + 23,800
Estimate for 2040
is 1483.33* 100 + 23800
= 172,600.
4mn. You are multiplying them all together.
