3 years ago

Which addition expression

Mathematics

1 answer:

mina [271]3 years ago

6 0

Answer:(9+41)+-1-71)

Step-by-step explanation:

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--<br> Choose the correct simplification of the expression -5x2(4x – 6x2 – 3).

natali 33 [55]

$\huge \bf༆ Answer ༄$

Let's simply ~

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: - 5 {x}^{2} (4x - 6 {x}^{2} - 3)$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \:( - 5x {}^{2} \times 4x) - ( - 5 {x}^{2} \times 6 {x}^{2} ) - ( - 5 {x}^{2} \times 3)$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: - 20 {x}^{3} - ( - 30 {x}^{4} ) - ( - 15 {x}^{2} )$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: - 20 {x}^{3} + 30 {x}^{4} + 15 {x}^{2}$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \:30 {x}^{4} - 20 {x}^{3} + 15 {x}^{2}$

5 0

2 years ago

1/2b+9/4=7/4 solve the equation

AlladinOne [14]

First subtract 9/4 from each side

1/2b=-2/4

Simplify the 2/4

1/2b=-1/2

Divide each side by 1/2

b = -1

4 0

3 years ago

Please help me I don’t understand

Scilla [17]

I think 8. Plug in -4 for x. 1/2-4^2
Using pemdas -4^2 is 16 and 1/2•16 is 8. If there were parenthesis around 1/2x then 1/2•-4 would be -2 and -2^2 is 4 but since there aren’t parentheses then 8

3 0

3 years ago

It takes 20 minutes to cut a log into 5 equal-size pieces. How long will it take to cut a similar log into 3 equal-size pieces

Anna007 [38]

Answer:

30mins

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

-6x+6y=6<br> - 6x+3y=-12 also steps on how to solve it

Masja [62]

Answer:

x=5, y=6. (5, 6).

Step-by-step explanation:

-6x+6y=6

-6x+3y=-12

---------------

simplify -6x+6y=6 into -x+y=1 and y=1-(-x)=1+x

-6x+3(1+x)=-12

-6x+3+3x=-12

-3x=-12-3

-3x=-15

3x=15

x=15/3

x=5

-6(5)+6y=6

-30+6y=6

6y=6-(-30)

6y=6+30

6y=36

y=36/6

y=6

3 0

3 years ago