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3 years ago

Solve the mathematical puzzle.

Mathematics

2 answers:

Genrish500 [490]3 years ago

7 0

Answer:

3,3,3,3

Step-by-step explanation for checking my work:

f are all the same T/F T

the sum of all the digits are 12 T/F T

when any two are multiplied together it is 9 T/F T

all are true so the answer is correct

mote1985 [20]3 years ago

3 0

F = x
F = x + x + x + x = 12
4x = 12
x = 3

any two digits are multiplied is 9,
3 × 3 = 9

Therefore,the digits of F are 3,3,3,3

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The following data show the midterm and final exam scores in an English writing class. Student 1 2 3 4 5 6 7 8 9 10 11 12 Midter

tester [92]

Answer:

The co variance of the midterm and final exam scores is 58.76.

Step-by-step explanation:

The formula to compute the sample co variance is:

$Cov(x,y)=\frac{\sum(X-Mean\ of\ X)(Y-Mean\ of\ Y)}{n-1}$

The values are computed in the table below.

Compute the co variance as follows:

$Cov(x,y)=\frac{\sum(X-Mean\ of\ X)(Y-Mean\ of\ Y)}{n-1}\\=\frac{646.33}{12-1}\\ =58.76$

Thus, the co variance of the midterm and final exam scores is 58.76.

7 0

3 years ago

How do you solve log base 64 of 0.5 = x?

alexandr1967 [171]

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x㏑(64) = ㏑(0.5)
  x㏑(2⁶) = ㏑(2⁻¹)
6x㏑(2) = -㏑(2)
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x = ⁻¹/₆

4 0

3 years ago

A window box shaped like a rectangular prism has a length of 12 feet, a width of 9 feet, and a height of 9 feet. If one bag cont

german

Answer:

Number of bags required = 486

Total cost to fill the window box = $2415.42.

Step-by-step explanation:

Volume of the rectangular prism = l × b × h

= 12 × 9 × 9 cubic feet

Volume of 1 bag of soil = 2 cubic feet

Number of bags required = $\frac{12(9)(9)}{2}$

= 486

Cost of one bag = $4.97

Cost of 486 bags = 486 × 4.97 = 2415.42

Hence, total cost of filling the window box = 2415.42.

6 0

3 years ago

What is this equation Simplify 3^2 x3^2

Tomtit [17]

Answer:

Step-by-step explanation:

=(3×3)×(3×3)

=9×9

=81

6 0

3 years ago

When given the building layout of store a 2500ft2, store b 625ft2, store c 625ft2, store d 2500ft2, what portion of the $7500 ma

stepan [7]

9514 1404 393

Answer:

$750

Step-by-step explanation:

The total store area in the building is ...

2500 +625 +625 +2500 = 6250 . . . . square feet.

Then the fraction that can be allocated to store C is ...

(625 ft²)/(6250 ft²) = 0.1

The maintenance fee allocated to store C should be ...

0.1 × $7500 = $750

7 0

2 years ago