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Natasha_Volkova [10]
3 years ago
15

A.the solution to the system is (-2,0)

Mathematics
1 answer:
Lunna [17]3 years ago
6 0
The answer I’m for sure it’s D
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There are 450 vehicles in a car lot.Select the correct value for the number of vehicles of each type that are in the lot.
elena-s [515]

Answer: there’s no problem

Step-by-step explanation:

6 0
4 years ago
An ornithologist has 4 bird feeders at separate locations. She wonders if birds are equally likely to visit each of the feeders.
Marianna [84]

Answer:

the x² test statistic 13.71

Option a) 13.71 is the correct answer.

Step-by-step explanation:

Given the data in the question;

Feeder                     1      2      3       4

Observed visits; o_i  60   90   92    58

data sample = 300

Expected e_i = 300 / 4 = 75

the x² test statistic = ?

X^2_{stat = ∑[ (o_i - e_i)²/e_i]

X^2_{stat = [ (60 - 75)² / 75 ] + [ (90 - 75)² / 75 ] + [ (92 - 75)² / 75 ] + [ (58 - 75)² / 75 ]

X^2_{stat = [ 3 ] + [ 3 ] + [ 3.8533 ] + [ 3.8533 ]

X^2_{stat = 13.7066 ≈ 13.71

Therefore, the x² test statistic 13.71

Option a) 13.71 is the correct answer.

7 0
3 years ago
Help me with this please
lbvjy [14]

Answer:

6a is 80       6b120

Step-by-step explanation:

3 0
3 years ago
Umm anyone know this..
RUDIKE [14]

Answer:

Sine is equal to opposite over hypotenuse in right triangles. Let's say we have a 3-4-5 right triangle, the side opposite the 90° angle is 5, and 5 is also the hypotenuse. 5/5 = 1

Therefore, in all right triangles, the side opposite the 90° angle is equal to the hypotenuse, and anything over itself is equal to one.

(Not sure if this is a mathematically correct way to explain it, but it makes the most sense to me.)

4 0
3 years ago
Someone help me asap please
denis23 [38]

Step-by-step explanation:

1, vertical- axis intercept is the water at the beginning

3, she should have included the y-intercept and x-intercept of the linear function

7 0
4 years ago
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