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dedylja [7]
3 years ago
8

Will somebody please help me​

Mathematics
2 answers:
lana66690 [7]3 years ago
6 0
I’m pretty sure that last one is write
PolarNik [594]3 years ago
5 0

Answer:

-9n-3

Step-by-step explanation:

(-7n)-2n=-9n

2+(-1)=-3

So, the question equals -9n-3 :)

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This questions is extremely hard, could someone please answer what 5+8 is?
Artyom0805 [142]

Answer:

13

Step-by-step explanation:

5 0
3 years ago
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Aha I'm failing so if you could help that would be great :D. Find the value of x in the triangle shown below.
Yakvenalex [24]

Answer:

8

Step-by-step explanation:

p = ?

h = 10

b = 6

Now,

p2 = h2 - b2

p2 = ( 10)2 - (6)2

p2 = 100 - 36

p2 = 64

p = root under (64)

p = 8

7 0
3 years ago
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Solve the following simultaneouse equation. 3x+y=1 and x²+y²=5​
Serjik [45]

Answer:

x=2/5,      y=11/5

or x=−1y = 2

Step-by-step explanation:

Substitute y=3x+1 in x2+y2=5 to obtain

x2+(3x+1)2=5    ⇒    10x2+6x−4=0

Hence

5x2+3x−2=0    ⇒    5x2+5x−2x−2=0    ⇒5x(x+1)−2(x+1)= 0   ⇒ (5x−2)(x+1)=0

Hence

either

x=2/5, y=3×2/5+1=11/5

or x=−1, y=3×(−1) +1 = −2

3 0
3 years ago
Help asap and please only answer if u know pleaseeee
Naily [24]
The answer is A. “The dilation of 1/2 and Rotation of 90 or 270.”
7 0
2 years ago
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A) Graph the following two lines on the same rectangular coordinate system. Show all your working. You need to use the slope-int
Oksanka [162]
Graph a.

3x+2y=12
-3x -3x

2y=-3x+12
2/2y=(3x+12)/2

y=-1.5x+6

graph b.

4x-y=5
+y +y

4x=y+5
-5 -5

4x-5=y

c) 11 units is the difference between y-coordinates of graph a and y-coordinates of graph b.

e) at (6,-3) x=6 cuts into graph a

8 0
4 years ago
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