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Luda [366]
3 years ago
5

Identify these angles pls help.​

Mathematics
1 answer:
Strike441 [17]3 years ago
8 0
The answer is that this is the river angel
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Solve x + y = 5 using matrices. 2x – y = 1 I have the answer, x = 2 and y =3, how do I phrase this as a matrices? (2,3)?
BartSMP [9]
X +y = 5

x = 5-y

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

2x -y = 1

2•(5-y) -y = 1

10 -2y -y = 1

10 -3y = 1

-3 y = 1-10


-3y = -9

then you can divide it
y = -9/-3

y= 3


for x :

x + y = 5

x + (3) = 5
x= 5-3
x= 2


(x,y)

(2,3)
7 0
3 years ago
POSSIBLE POINTS: 3.33
Triss [41]

Answer:

From the information given, you can write the following system of equations:

x+y+z=16 (1)

5x+4.5y+5.5z=82 (2)

z=x+y (3)

You can replace (3) in (1) and (2):

x+y+x+y=16

2x+2y=16 (4)

5x+4.5y+5.5(x+y)=82

5x+4.5y+5.5x+5.5y=82

10.5x+10y=82 (5)

Now, you have the following equations:

2x+2y=16 (4)

10.5x+10y=82 (5)

You can isolate x in (4):

2x=16-2y

x=8-y (6)

Then, you have to replace (6) in (5):

10.5(8-y)+10y=82

84-10.5y+10y=82

84-82=10.5y-10y

2=0.5y

y=2/0.5

y=4

Now, you can replace the value of y in (6) to find x:

x=8-4

x=4

Finally, you can replace the vaue of x and y in (3) to find z:

z=4+4

z=8

According to this, she should buy 4 apple pies, 4 banana pies and 8 chocolate pies.

3 0
2 years ago
What is the answer to 90x144?
I am Lyosha [343]
The Answer Is 12,960.
4 0
2 years ago
How many 2-digit numbers are multiples of 7 or 5
wolverine [178]

Answer:

2

Use the prime factorization:

7 * 5 * 1 = 35

7 * 5 * 2 = 70

4 0
2 years ago
What feature do plants have that provide structure and form?
Nostrana [21]
It should be a.), all plant cells have a cell wall made of cellulose, which acts as exoskeleton and makes them so stable. However on a bigger level this plant cells can also form cellulose fibers, so that c.) is not completely false :)
8 0
3 years ago
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