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Natalija [7]
3 years ago
11

6(5+a)-9=28a Please solve

Mathematics
2 answers:
Murljashka [212]3 years ago
8 0
A=27/22 or 1 5/22 or 1.23                               
jonny [76]3 years ago
7 0
Perform indicated multiplication on left side to get:

30+6a-9=28a  combine like terms on left side...

6a+21=28a  subtract 21 from both sides...

6a=28a-21  subtract 28a from both sides...

-22a=-21  divide both sides by -22

a=21/22
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36 x 10^5 in scientific notation
Viktor [21]

Answer:

3.6 x 10^6

Hope this helps :)

7 0
3 years ago
HELP I WILL GIVE 5 POINTS TO WHOM EVER CAN ANSWER THESE LAST 2 QUESTIONS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
vodka [1.7K]
Group and factor
undistribute then undistribute again
remember
ab+ac=a(b+c)
this is important



6d^4+4d^3-6d^2-4d
undistribute 2d
2d(3d^3+2d^2-3d-2)
group insides
2d[(3d^3+2d^2)+(-3d-2)]
undistribute
2d[(d^2)(3d+2)+(-1)(3d+2)]
undistribute the (3d+2) part
(2d)(d^2-1)(3d+2)
factor that difference of  2 perfect squares
(2d)(d-1)(d+1)(3d+2)






77.
group
(45z^3+20z^2)+(9z+4)
factor
(5z^2)(9z+4)+(1)(9z+4)
undistribuet (9z+4)
(5z^2+1)(9z+4)
7 0
3 years ago
The sum of two numbers is 52. The smaller number is 18 less than the larger number. What are the numbers?
ch4aika [34]

x + y = 52

x = y - 18

Adding,

2x + y = 52 + y - 18

2x = 34

x = 17

y = x + 18 = 35

Check: x+y = 17+35 = 52, good

Answer: 17 and 35

7 0
3 years ago
A) Inverse Property of Multiplication
Salsk061 [2.6K]
B) Commutative property of Multiplication

Hope this helps!
7 0
3 years ago
Read 2 more answers
Shanta got 215 marks in an examination. if she had got 10 marks more, she would have scored 60% of the total marks. What are the
ololo11 [35]
She got 215....but if she would have gotten 10 more, she would have scored 60% of the total marks......so if she got (215 + 10) = 225 she would have scored 60% of the total marks...

so 60% of the total marks = 225
0.60x = 225
x = 225/0.60
x = 375 <===
8 0
3 years ago
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