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sergiy2304 [10]
3 years ago
12

What is the solution to the system of linear equations?

Mathematics
2 answers:
FinnZ [79.3K]3 years ago
3 0
X= 3 and y=7

7(-9x+4y=55)
-4(-11x+7y=82)

63x + 28y = 385
44x - 28y = -328
-------------------------
19x            =57
x=3

63(3) + 28y = 385
189 = 28 = 385
28y = 196
y=7
leonid [27]3 years ago
3 0

we have

-9x+4y=55 -----> equation A

-11x+7y=82 -----> equation B

Using a graphing tool

we know that

the intersection both graphs is the solution of the system of equations

see the attached figure

The solution is the point (-3,7)

therefore

<u>the answer is</u>

x=-3\\y=7

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Given: f(x)=x^(2)-3 and g(x)=x+1 the composite function g*f is
Ivenika [448]

Answer:

<h2>x³ + x² - 3x - 3</h2>

Step-by-step explanation:

I'm assuming g*f means g times f,  so you want to multiply the two functions together.  

(x² - 3)(x + 1)                 Since the product is 2 binomials, use FOIL

                      =  x²(x) + x²(1) - 3(x) - 3(1)

which simplifies to

<h2>x³ + x² - 3x - 3</h2>
8 0
3 years ago
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As part of a study of the association between smoking and risk of squamous cell carcinoma, a logistic regression model was estim
AlekseyPX

Answer:

0.44

Step-by-step explanation:

Given the estimated logistic regression model on risk of having squamous cell carcinoma

-4.84 + 4.6*(SMOKER)

SMOKER = 0 (non-smoker) ; 1 (SMOKER)

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SMOKER = 1

exp(-4.84 + 4.6) / 1 + exp(-4.84 + 4.6)

exp^(-0.24) / (1 + exp^(-0.24))

0.7866278 / 1.7866278

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3 0
3 years ago
Yo!!!NEED HELP!!!!WILL GIVE BRAIN!!!!!!!
yawa3891 [41]
First, we are going to find if the function is odd or even. Remember that we can determine if a function is odd of even from its graph by looking at its ends; if both ends go to the same the direction, the function is even. If both ends go to opposite directions, the function is odd. At both ends, the graph of our function go towards the same direction, minus infinity, so we can conclude that our function is even.

Next, we are going to find the possible degree of our function. Remember that the possible degree of a function is the number of x-intercepts.
We can infer from our graph that the function intercepts the x-axis at least 6 times.

We can conclude that the correct answer is: even degrees of 6 or greater.
5 0
4 years ago
For every $5 dollars Micah saves, his parents give him $10.
kicyunya [14]
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m (Micah's savings) 5 10 15 20
p (Parents') 10 20 30 40

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QUESTION B.

p = 2X150
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4 years ago
Find the error in lin’s solution.
Luba_88 [7]
4 - 17 is -13, not 13
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3 years ago
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