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Brut [27]
3 years ago
14

Find the circumference of the circle.

Mathematics
1 answer:
Anna007 [38]3 years ago
7 0

Answer:

12ft

Step-by-step explanation:

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on a blueprint, the height of a door is 0.4cm. the actual height of the door is 2m. What is the scale on the blueprint?
Roman55 [17]

Step-by-step explanation:

2 m corresponds to 0.4 cm on a blueprint.

so,

2 m / 0.4 cm = 200 cm / 0.4 cm

our fun the point of view of the blueprint

0.4 cm / 200 cm

the scale on a map or blueprint is usually normed to one unit on the blueprint :

0.4/200 × f/f = 1/(200×f)

0.4 × f = 1

f = 1/0.4 = 2.5

so, our scale is

(0.4 × 2.5) / (200 × 2.5) = 1 / 500

that means 1 cm on the blueprint corresponds to 500 cm or 5 m in reality.

4 0
2 years ago
Lipids provide much of the dietary energy in the bodies of infants and young children. There is a growing interest in the qualit
garri49 [273]

Answer:

A.

This assumption is that the distribution of polyunsaturated fat % of each if these four regimes must be with equal variances as well as uniform.

B.

The null hypothesis

H0: μ1 = μ2 = μ3 = μ4

The alternate hypothesis:

H1: at least 2 means are unequal

C.

First we calculate the grand mean

= 1/54[15(42.9)+17(43.1)+8(43.7)+14(43.9)]

= (643.5 +732.7 + 349.6 + 614.6)/54

= 2340.4/54

= 43.341

Sum of squared treatment

= [15(42.9-43.341)²+17(43.1-43.341)²+8(43.7-43.341)²+14(43.9-43.341)²]

= 9.3104

Mean square of treatment

= SST/I-1

= 9.3104/4-1

= 9.3104/3

= 3.1035

Error sum of squared

= (15-1)*(1.3)² + (17-1)*(1.5)² + (8-1)*(1.2)² + (14-1)*(1.2)²

= 88.46

Error mean square

MSE = 88.46/54-4

= 1.7692

Test statistic

= 3.1035/1.7692

= 1.75

4 0
3 years ago
Find how many solutions there are to the given equation that satisfy the given condition. X1 + x2 + x3 = 22, each x; is a positi
DiKsa [7]

Answer:

Step-by-step explanation:

Given that there are three variables satisfying the equation

X1 + x2 + x3 = 22

Here each x is given to be a positive integer

i.e. solution set for each of the variable can be any integer from 1 to 20 at most.(because if two other integers are 1 each third has to be 20)

Hence solution set can be of the form

(x1,x2,x3) =(1,1,22) (1,2,21) (1,3,20).....

=(2,1,19) (2,2,18),...\\=(3,1,18) (3,2,17),....\\...\\...\\=(20,1,1)

If x1 =1, there are 20 solution sets

If x1 =2,there are 19

...

If x1 =20 there is 1 set

Hence total solutions can be= 20+19+...+1\\=\frac{20(21)}{2} =210

6 0
3 years ago
Read 2 more answers
WILL MAKE BRAINLEST HURRY!<br> What is the value of x?<br> -question in picture
makvit [3.9K]

Answer:

i have no clue at all what x

3 0
3 years ago
All the answers you need is at the top​
svp [43]

Answer:

I don't know if you need help, but the answer to the question in the picture is indeed A. :)

7 0
3 years ago
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