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daser333 [38]
3 years ago
15

There can only be 1 answer need help plzz

Mathematics
1 answer:
Alexxandr [17]3 years ago
8 0

Answer:

do you like me yes or no

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Use the functions f(x) = 4x − 5 and g(x) = 3x + 9 to complete the function operations listed below.
alukav5142 [94]
A) (f+g)(x)=f(x)+g(x)=(4x-5)+(3x+9)=7x+4
B) (f*g)(x)=f(x)*g(x)=(4x-5)(3x+9)=12x^2+21x-45
C) f(g(x)) = 4(3x+9)-5 = 12x+31
3 0
3 years ago
Find the area of a square<br> with side length 12 inch.
dem82 [27]
A square has all of the same sides, so just do 12x12 which is 144
3 0
3 years ago
Read 2 more answers
It is claimed that an automobile is driven on the average more than 20,000 kilometers per year. To this claim, a random sample o
Aleonysh [2.5K]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Sample mean(x) = 23500

Sample standard deviation (sd) = 3900

Sample size (n) = 20

Population mean (m) = 20,000

Null hypothesis : m = 20000

H1: m > 20000

To obtain the z-score :

(population mean - sample mean) / (sample standard deviation /√sample size)

(x - m) / (sd/√n)

(23500 - 20000) / (3900 / √20)

3500 / (3900 /4.4721359)

3500 / 872.06651

= 4.0134

Get the P value to know if to reject or accept the null:

P(z > 4.0134) = 1 - P(z < 4.0134)

P(z < 4.0134) = 1

1 - P(z < 4.0134) = 1 - 1 =0

Since P value is < alpha, we reject the null.

Hence average is > 20000

3 0
3 years ago
Here are some point to help with your difficulties Hope you have a good day :)
Arlecino [84]

Answer:thanks

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Three dimensional figures
aksik [14]

Answer:

3d figures - "a three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth." -Google

Some Examples are...

- cones

-cylinders

-cubes

-sphere

Hope this helps!

4 0
3 years ago
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