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Kitty [74]
3 years ago
14

4) Which expression is equivalent to (-4x+3y-5)2 ?

Mathematics
1 answer:
mafiozo [28]3 years ago
4 0

Answer:

-8x + 6y - 10

Step-by-step explanation:

first, distribute (multiply) the 2 to eliminate the parentheses to get:

2(-4x) + 2(3y) - 2(5) which simplifies to:

-8x + 6y - 10

since the above expression has three terms, none of which are 'like', this is as simplified as it can be

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Given that R = 8 x + 4 y Find y when x = 8 and R = 30 Give your answer as an improper fraction in its simplest form.
QveST [7]

Answer:

25/8

Step-by-step explanation:

Given That:

R = 8x+4y

X= 8

R = 30.

So, 8 x 8 +4y = 30

Simplify, Rearrange and solve.

64 + 4y = 30

4y = 30/64 = 15/32

y = 15/32 divided by 4

y = 15 / 32 x 1/4

y = 15/(32 x 4) = 15/128

hope this helps

4 0
3 years ago
The distance between two stations is 540 km. A train takes 3 hours to
mihalych1998 [28]
180 km/hr
50 m/s
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8 0
2 years ago
Need to solve 5t-2r=25 for t
postnew [5]
5t = 25+2r
t = (25+2r)/5 or
t = 5 + (2/5)r
7 0
3 years ago
Help please >3 thank youuu
11111nata11111 [884]

Answer:

C

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
LITTERLY HELP ME PLEASEE..... 2/x-4x/2x-3=-2<br> PLEASEE I INSERTED A PIC
Stels [109]

Answer:

x = -3

Step-by-step explanation:

Given expression is,

\frac{2}{x}- \frac{4x}{2x-3}=-2

\frac{2(2x-3)}{x(2x-3)}-\frac{4x(x)}{x(2x-3)}=-2

\frac{2(2x-3)-4x^{2} }{x(2x-3)}=-2

(4x - 6) - 4x² = -2x(2x - 3)

4x - 6 - 4x² = -4x² + 6x

4x - 6 = 6x

6x - 4x = -6

2x = -6

x = -3

3 0
3 years ago
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