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ipn [44]
2 years ago
6

Need help to solve this ASAP

Mathematics
2 answers:
butalik [34]2 years ago
5 0

Answer:

it 14

Step-by-step explanation:

anygoal [31]2 years ago
3 0
Answer: 12
Explanation: the total is 17. 17-5= 12
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What is one of the solutions to the following system of equations?
Amanda [17]

Answer:

(8,-1)

Step-by-step explanation:

Given :   x^{2} +y^{2} =65

               x+y=7

To Find: solution of given system of equations.

Solution:

Equation a :   x^{2} +y^{2} =65

Equation b :  x+y=7

Substitute the value of y from equation b in equation a

y from equation b : y = 7-x

Now substitute value of y in equation a

Thus equation a becomes:

 x^{2} +(7-x)^{2} =65

x^{2} +49+x^{2}-14x =65

2x^{2} -14x =65-49

x^{2} -7x -8=0

x^{2} -8x+x -8=0

x(x-8)+1(x-8)=0

(x+1)(x-8)=0

⇒ x= -1 and x = 8

Now substitute values of x  in equation b to obtains values of y

⇒ x+y=7

for x = -1

⇒ -1+y=7

⇒ y=7+1

⇒ y=8

Thus (x,y)=(-1,8)

For x =8

⇒ 8+y=7

⇒ y=7-8

⇒ y=-1

Thus (x,y)=(8,-1)

Hence Option A is the correct solution .


6 0
3 years ago
Read 2 more answers
What is the answer??
user100 [1]
U got it right.
last option
............

5 0
3 years ago
Read 2 more answers
A line passes through (10,-1) and has a slope of -1/2 whats the equation of the line
8090 [49]

Answer:

Y=-1/2x+4

Step-by-step explanation:

-The slope is -1/2 so you just plug it in where the slope would go with an x in front

-all you need now is your y-intercept which can be found by plugging in the provided info to your basic form y=mx+b

-You can take the provided point at (10,-1) and work out what the intercepts is

-1=-1/2(10)-b

-1=-5-b

4=b

8 0
3 years ago
Pls help thanks.....
ivolga24 [154]

Answer: 60

Step-by-step explanation:

8 0
2 years ago
Which diagram shows the 3d shape out of these on the photo.
sleet_krkn [62]

Answer:

C

Step-by-step explanation:

The front elevation, side elevation, and plan of the 3D shape represent the shape C.

4 0
3 years ago
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