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zloy xaker [14]
3 years ago
7

Hiii first to answer wins 50 free and brainilest LOL IM GOING TO GIVE ALL MY 15K POINTS AWAY

Mathematics
2 answers:
Mashcka [7]3 years ago
8 0

Answer:

brainlist pls

Step-by-step explanation:

damaskus [11]3 years ago
3 0

Answer:

its b

Step-by-step explanation:

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An urn contains a very large number of marbles of four different colors: red, orange, yellow, and green. A sample of 12 marbles d
Umnica [9.8K]

Answer:

We  can reject the hypothesis at the 0.05 significance level.

 

Step-by-step explanation:

given that an urn contains  a very large number of marbles of four different colors: red, orange, yellow, and green. A sample of 12 marbles drawn at random from the urn revealed 2 red, 5 orange, 4 yellow, and 1 green marble.

H0: All colours are equally likely

Ha: atleast two colours are not equally likely

(Two tailed chi square test at 5% significance level)

color                  Red           Orange      Yellow      Green         total

Observed  O         2                     5                  4           1              12    

Expected   E         3                     3                   3          3              12

(O-E)^2/E             0.3333            5.3333        0.3333  5.3333     11.3333

chi square = 11.3333

df =3

p value = 0.010055

Since p < 0.05 we reject H0

We  can reject the hypothesis at the 0.05 significance level.

 

3 0
3 years ago
Which equation shows<br><br> equation shows y = - 3x +4<br><br> x + 4 is in standard form?
svet-max [94.6K]

Answer:

7x-y=-4

Step-by-step explanation:

Let me know if this right please :(

Hope it was is helpful for you :)

3 0
3 years ago
If the area of a rectangle equals 30 cm² and the perimeter is equal to 26 cm. Find the length and width of the rectangle.​
Kamila [148]

Answer:

Length = 10 & width = 3

Step-by-step explanation:

Perimeter = Length + Length + Width + Width

26 = 2Length + 2 Width

26 = 2 ( Length + Width )

13 = Length + width

13 - Length = Width EQUATION 1

Area = Length X Width

30 = Length X ( 13 - Length )

30 = 13Length - Length ^2

Length ^2 - 13Length + 30 = 0

( Length - 3 )( Length - 10 )

Length = 3 or Length = 10

Therefore Length = 10

From equation 1

13 - Length = Width

13 - 10 = width

width = 3

8 0
2 years ago
How can found thw length of arectngle
Minchanka [31]
If you have the area of the rectangle, then the equation would be A = W*L

Lets say the area is 15 and the width is 3. You don't know what the length is. Just divide 3 into 15 to get 5. Hope this helps!
5 0
4 years ago
A gardener can care for the Green's property in 5 hours. If his helper assists him, they can complete the job in 4 hours. How lo
PilotLPTM [1.2K]

Step-by-step explanation:

Fraction of work done by Gardner in 1 hr = 1 / 5

Fraction of work done by Gardner and helper in 1 hr = 1 / 4

Fraction of work done by helper in 1 hr

= 1 / 4 - 1 / 5

= 1 / 20

<u>Time required by helper to complete work</u> :

= <u>20 hours</u>

6 0
3 years ago
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