Q.1 x-2/5=7
divide -2/5 which is -0.40
x-0.40=7. Move -0.40 to the right side of the equal sign and that becomes +0.40
x=7+0.40 . 7+0.40 is 7.4
x=7.4
Q.2 2.1r=6.174
divide 2.1 by both sides which 2.1r divided by 2.1 is 1r and 6.174 divided by 2.1 is 2.94
r=2.94
Q.3
equation: 2/3 = 32 2/3 d
Q.4 x9=3/5
3/5 is 0.60
x9=0.60
divide 9 by both sides. 9x divided by 9 is 1x and 0.60/9 is
0.0
6666 (the 6 is continuing)
x=0.06666
Q.5
x=-3
Q.6
7.25 =0.5x
divide 0.5 by both sides. 0.5x divided by 0.5 is 1x and 7.25 divided by
0.5 is 14.5
x=14.5
Q.7
the expression: 7-9m
Q.8
answer is C
Q.9
(x2) + (10(2))
Answer:
72- no
36-yes
8- no
16- yes
81-yes
64-yes
48-no
Step-by-step explanation:
Answer:
Therefore, the pairs of twin-prime numbers are (101,103) , (107,109) , (137,139) , (149,151) , (179,181) , (191,193) , (197,199) . So, the correct answer is “ (101,103) , (107,109) , (137,139) , (149,151) , (179,181) , (191,193) , (197,199) ."
Answer:
3/4
Step-by-step explanation:
f(x) = 3 *2^x
Let x= -2
f(-2) = 3 *2^(-2)
= 3 * 1/2^2
= 3 /4
Answer:
really hope this helps or answers your questions!!
Step-by-step explanation:
Mean 49
Mode 45
Median 50
range is 5
Explanation:
Put the numbers in order
45,45,47,50, 51,52,53,
The number that happens MOST the MODE is 45
The number in the MIDDLE, the MEDIAN is 50
The MEAN is the total of the 7 numbers shared out evenly.
Total 343
343 Divided by 7 =49