Prove if 5n+3 is odd, then 7n+4 is even

Mathematics

1 answer:

iVinArrow [24]3 years ago

3 0

N = 2 , then just fill in “2” to where n would go

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3.2x+2.6= -23 please. She is step by step so I can understand

Kryger [21]

Answer:

x = -8

Step-by-step explanation:

To find x, we need to isolate it. So first, let's subtract 2.6 from both sides to get rid of it on the side with x:

$3.2x+2.6-2.6=-23-2.6$

$3.2x+0=-25.6$

$3.2x=-25.6$

Now, divide both sides by 3.2 (because notice how we are multiplying it right now - so we need to undo that, and so we do the inverse operation of division):

$\frac{3.2x}{3.2} = \frac{-25.6}{3.2}$

Notice how we are left with 1x on the left which is x, so we have successfully isolated x:

$x = -\frac{25.6}{3.2} = -8$

So, x = -8. Hope it makes sense, ask me any questions you may have! :)

8 0

3 years ago

Read 2 more answers

Mr.Santino needs A total of 406 Forks restaurant. He currently has 278 forks. If each cell has 12 forks which is the minimum num

Umnica [9.8K]

11 forks because 406 minus 278 is 128 and 128 divided by 12 is 10.66666668 and we round that to 11.

6 0

4 years ago

tino4ka555 [31]

All the length, width and height doubled

8 0

3 years ago

Tony has 2 3/4 quarts of lemonade and paper cups that each hold 1/2 of a quart. How many paper cups can Tony fill with lemonade?

Alex Ar [27]

The total number of paper cups that Tony can fill with the available lemonade is 5 $\frac{1}{2}$ quarts

Step by step explanation :

Step 1 :

Total quantity of lemonade Tony has = 2 $\frac{3}{4}$ quarts = $\frac{11}{4}$ quarts

Total quantity of lemonade that the paper cup can hold = $\frac{1}{2}$ quarts

We need to find the total number of paper cups that can be filled with the available lemonade.

Step 2 :

The number of paper cups that can be filled with the available lemonade can be obtained by dividing the total available lemonade with the quantity that each cup can hold.

Hence the total number of paper cups = $\frac{11}{4}$ × $\frac{2}{1 }$