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Ratling [72]
3 years ago
12

5x+2y=-10 -3x - 2y=6 Solve by elimination I’m confused

Mathematics
1 answer:
Firdavs [7]3 years ago
5 0
The answer is
x=-2 y=0
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Value of angle Y is 180-51
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An art dealer is trying to determine whether the age of a painting plays a significant role in its price at auction. She collect
klasskru [66]

Answer:

-0.20

Step-by-step explanation:

Given the data:

Age at auction (x) ____price sold (y)

391

51

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Y:

76.9

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General formula for a simple linear regression :

y = ab + c

Where ;

y = predicted variable ; a = slope / gradient

b = predictor / independent variable ; c = intercept

From the result obtained from the calculator :

y = -0.01246X + 74.65552

Correlation Coefficient is used to measure the strength of relationship between linear variables.

The regression Coefficient obtained is - 0.20

This shows that there is a weak negative correlation between the age at auction and the price at which painting is sold. This is because the negative sign means that value of y decreases as x increases or vice versa, however, due to a correlation vale which is closer to 0 than 1 or - 1, we can conclude that the negative relationship between the variables is weak.

5 0
3 years ago
The circumference of a
timama [110]

9514 1404 393

Answer:

  • 160,000 m²
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Step-by-step explanation:

The side length of a square is 1/4 of the perimeter, so the side length of the square orchard is (1600 m)/4 = 400 m.

The area of a square is the square of the side length, so the area of the orchard is (400 m)² = 160,000 m².

A hectare is 10,000 m², so the area of the orchard in hectares is ...

  16·(10,000 m²) = 16 ha

3 0
3 years ago
Marcus and Lily want to decorate their classrooms by putting a border across the top of two square walls. Marcus’s wall has an a
expeople1 [14]
The length should be 10 bc area = length x with . and 10 times 10 is 100
5 0
3 years ago
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EMERGENCY!!!!! THIS IS AN EMERGENCY!!!!! ANSWER FAST PLEASE!!!!!!! Do not answer if you do not know what the answer is PLEASE!!
JulsSmile [24]

Answer:

The additive inverse of a number is what you add to a number to create the sum of zero. So in other words, the additive inverse of x is another number, y, as long as the sum of x + y equals zero. The additive inverse of x is equal and opposite in sign to it (so, y = -x or vice versa).

Step-by-step explanation:

8 0
3 years ago
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