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Yuliya22 [10]
3 years ago
7

Free pionts for brainlist pleas​

Mathematics
2 answers:
meriva3 years ago
5 0

Sodium oxide is a simple strongly basic oxide. It is basic because it contains the oxide ion, O2-, which is a very strong base with a high tendency to combine with hydrogen ions. Reaction with water: Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution

oee [108]3 years ago
4 0

I don’t know anymore, ignore this ;-;

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Divide 56 in the ratio 5 3
bogdanovich [222]
I don't understand what you need.

But,

5 + 3 = 8

56/8 = 7

7*5 = 35
7*3 = 21

Hope this helps !

Photon
6 0
3 years ago
Read 2 more answers
Solve the system by substitution.<br> y = -3x + 4<br> y = -7x<br> Submit Answer
iVinArrow [24]

Answer:

{y,x} = {7,-1}

Step-by-step explanation:

(-7x) + 3x = 4

- 4x = 4

 4x = - 4

x = - 1

   y = -7x

   x = -1

   y = -7(-1) = 7

5 0
3 years ago
Prove this trigonometric identity<br>sin ​3x/sin x - cos 3x/cos x =2
Sveta_85 [38]

Step-by-step explanation:

LHS= sin 3x/sin x - cos 3x/cosx

Taking LCM,

<u>=</u><u>sin3xcosx- cos3xsinx</u>

sinxcosx

<u>=</u><u>sin(3x-x)</u>

sinxcosx

= <u>2sin2x</u>

2sinxcosx

=<u> </u><u>2sin2x</u><u> </u>

sin2x

=2

= RHS.

Proved.

8 0
3 years ago
T-activity-player/star/start
wolverine [178]

Answer:

$2400

Step-by-step explanation:

as you realize, it is going down by $400 per year

6000, 5600, 5200, 4800, 4400, 4000, 3600, 3200, 2800, 2400
1.         2.          3.       4.       5.         6.         7.        8.      9.         10


it would be $2400

3 0
2 years ago
Solve picture question​
Naddik [55]

Answer:

As it ایس the correct answer is 45

78

7.90

7 0
1 year ago
Read 2 more answers
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