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Xelga [282]
2 years ago
14

5x + 2y = 7 7x + 6y = -3 Please solve using elimination method.

Mathematics
1 answer:
Kazeer [188]2 years ago
3 0
X=3 y=-4
hope that helps
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Can you please help me with this reverse percentage?
ratelena [41]

Answer:

39785

Step-by-step explanation:

or,40596×2÷100=811

or,40596-811=39785

7 0
2 years ago
Find the common difference for the given sequence. 1.05, 1.1, 1.15, 1.2, ... 0.005 0.05 0.5
pashok25 [27]
Given a sequence; a₁,a₂,a₃...,an,
The common difference is d= a₂-a₁=a₃-a₂=a₄-a₃....

In this case: 
a₁=1.05
a₂=1.1

d=a₂-a₁=(1.1)-(1.05)=0.05

Answer: The common difference is 0.05. 
6 0
3 years ago
Read 2 more answers
A square is inscribed in a circle as shown. If the radius of the circle is 9, what is the area of the shaded region, rounded to
djyliett [7]

Answer:

Area of shaded region is:

A = 92.41

Step-by-step explanation:

(As the diagram is not shown, consider the diagram attached below.)

r = 9

So

Diagonal of the square = 2r = 18

As all angles of square are of 90°

The diagonal is dividing the angles into 2 halves of 45° at point where diagonal is joining the corner.

Taking sine:

sin\theta=\frac{perpendicular}{hypotenuse}\\perpendicular = s\\hypotenuse = 2r = 18\\\theta = 45^\circ\\Substitute:\\sin45=\frac{s}{18}\\sin45\cdot18=s\\s=12.73

<h3>Area of Circle:</h3>

A=\pi{r}^2\\A=\pi{9}^2\\A=254.34

<h3>Area of Square:</h3><h3>Area = s\cdot{s}\\Area=12.73\cdot12.73\\Area = 161.93</h3><h3>Area of Shaded Region:</h3>

Area of circle - Area of square

A = 254.34-161.93\\A=92.41

3 0
3 years ago
Solve using linear combination p-q=8 2p-q =19
8090 [49]

Answer:

p =11, q = 3

Step-by-step explanation:

p-q=8

2p-q =19

Multiply the first equation by -1

-p+q = -8

Add this to the second equation

-p+q = -8

2p-q =19

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

p = 11

Now we can find q

p -q = 8

11 -q = 8

Subtract 11 from each side

11-11-q = 8-11

-q = -3

q =3

3 0
2 years ago
8 points! Please help me with this problem, what is sin(theta)?
umka2103 [35]

sin=√17/7

or sin=sqrt(17)/7

8 0
3 years ago
Read 2 more answers
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