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seraphim [82]
3 years ago
10

Help me please... ...

Mathematics
2 answers:
Musya8 [376]3 years ago
8 0

Answer:

The mistake is in the 1st to 2nd step

They did not distribute 4(7-13).

If they distributed properly, it would be 28-52 instead of 28-13.

Step-by-step explanation:

Ber [7]3 years ago
4 0
It’s going to be A. She was supposed to use distributive property
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Please help with the 4th one
Yakvenalex [24]
The whole field is square, and its total area is 25 acres. 
It's divided up into 25 little sections. 
Each little section is a square, and its area is 1 acre. 

So the whole thing looks like a square tray with 25 little square blocks in it.
The blocks are in 5 rows, and there are 5 blocks in each row.

There are 16 blocks around the edge of the square tray, and 9 in the middle
that don't touch the edge.

Every block costs $1,200 to start out.  But the ones around the edge are
more expensive.  Anything on the edge costs an extra $150 for each side
of the little block that touches the edge.

Most of the 16 little blocks around the outside have only 1 side that touches
the edge.  But the ones in the <em>corners</em> of the tray have 2 sides along the edge.

You may want to have a look at the picture I attached.

That should be plenty to put you in a position to work out the costs.

7 0
3 years ago
Timmy used to practice the violin for 60 minutes everyday. Now, he practices 135% as many minutes as he used to. How many minute
Neporo4naja [7]

Answer:

81

Step-by-step explanation:

You need to work out 35% and add it to 100% to make 135%

To do that you work out 10% and multiply it by 3 to give you 30%. After that you need to work out 5% and add it to the 30%. You can work out 5 %by dividing the answer you get for 10%

100%=60 minutes

10%=6

30%=18

5%=3

35%=21

60+21=81 minutes

8 0
4 years ago
Read 2 more answers
Determine whether the statement is true or false. If it is true, explain why. If it is false, explain why or give an example tha
KATRIN_1 [288]

Answer:

See explanation below.

Step-by-step explanation:

False.

Counter example

Let's assume that we have two vectors u,v on a bidimensional space. Lets define u and v like this:

u = (x,y)

v = (-y,x)

We see on this case that u\neq v, u \neq 0 , v\neq 0. And for this case we have this:

u.v = x*(-y) + y(x)  = -xy +xy =0

We satisfy that the dot product is 0 but u\neq 0 , v\neq 0

So then since not applies for this particular this statement is FALSE.

4 0
3 years ago
Plzz help with my test
Evgen [1.6K]

Answer:

First graph

Hope this helps!

4 0
2 years ago
If 729 to 3 = 9 what is 512 to 3 = ?
hichkok12 [17]
9^3 is 729 so x^3 = 512 and you find it to be 8
3 0
4 years ago
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