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mafiozo [28]
4 years ago
12

Substitute!

Mathematics
1 answer:
Cloud [144]4 years ago
7 0
1. 4x(-4)x(-5)= 80
2. 5x(-4)-2x(-5) = -10
3. [-4x(-5)]x2= 40
4. -4x2x(-5)= -13
5. 4x(-4)x(-5)x2= 160
6. 3x(-4)x(-5)-5x(-5)= 85
7. -4x(-5)<span>÷2= 10
8. 3x(-4)x2</span><span>÷4= -6
9. 5x(-5)-(-4)x2= -17

I wasn't sure what the space were so I thought they were mistakes and did the problems as if they were not there but if they were meant to be there then tell me what they were meant to be and I will fix it (If there is no spaces on yours then you are probably thinking that I am going crazy)

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-0.5(x + 0.3) = 1.6x +0.9(x + 4.8) please show the work!​
loris [4]

Answer:

Step-by-step explanation:

So basically what you want to do is start with the distributive property.

-0.5(x+0.3) = 1.6x+0.9(x+4.8) would then equal -0.5x-0.15 = 1.6x+0.9x+4.32.

Then, add the matching terms on the right side (the x values) 1.6x+0.9x =2.5x

Your equation should the look like -0.5x-0.15 = 2.5x+4.32.

Next, add -0.5x to 2.5x giving you 3x

The equation will look like -0.15 = 3x+4.32

After that subtract 4.32 from -0.15 leaving you with -4.47=3x

Divide 3x from both sides

Your answer should be x= -1.49.

I hope this was helpful and not super confusing! Also if anything is incorrect let me know! :)

6 0
3 years ago
Distributive property of 8 x 31
solong [7]
Your answer would be 248
7 0
3 years ago
Steven wants to buy a $565 bicycle. Steven has no money saved, but will be able to deposit $30 into a saving account when he rec
galina1969 [7]
30(x) - 65 = 565, X represents the amount of paychecks he has to cash in and the -65 is the money he has to pay back first.
8 0
3 years ago
Hey i need help with number 8 and 9 thanks!
snow_lady [41]

Answer:

8     9.8 - 6.4n

9      15 - j/2

Step-by-step explanation:

8

2.8 - 4.4n - 2n +7

= 2.8+7 -4.4n -2n

= 9.8 - 6.4n

9

11 + (-3) - 1/8 j - 3/8 j +7

= 11 - 3 - 1/8 j - 3/8 j + 7

= 11 - 3 + 7 - 1/8 j - 3/8 j

= 15 - 4/8 j

= 15 - j/2

5 0
3 years ago
Which is bigger 3/4 or 4/5
Darya [45]
Well this is easier to look at when you turn them into decimals. 

3/4 = 0.75 

and..

4/5 = 0.8 

0.8 is bigger than 0.75 
So this means..

4/5 is bigger!!

Good Luck! :)

7 0
4 years ago
Read 2 more answers
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