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lakkis [162]
2 years ago
8

Please answer this correctly without making mistakes I want ace expert and genius people to answer this correctly without making

mistakes

Mathematics
2 answers:
mart [117]2 years ago
8 0
-4.9(-2)=9.8
9.8-9.2=0.6
the answer is 0.6
Delvig [45]2 years ago
7 0

Answer:

0.6

Step-by-step explanation:

(- 4.9 × -2) - 9.2

9.8 - 9.2 = 0.6

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Find (a) the range and (b) the standard deviation of the data set 40,35.45,55,60. Round to the nearest hundredth if necessary.
zmey [24]

Answer:

(a) 25

(b) 9.27

Step-by-step explanation:

Step 1

We have to rearrange the given days set from least to highest

35, 40, 45, 55, 60

(a) the range

Range = The highest number - The least number

= 60 - 35

= 25

(b) the standard deviation of the data set

35, 40, 45, 55, 60.

We find the Mean

Mean = Sum of values/Number of values

= 35+40+45+55+60/5

= 235/5

= 47

We can find the standard deviation now.

The formula =

√(x - Mean)²/n

= √(35 - 47)²+ (40 + 47)² + (45 - 47)² + (55 - 47)² + (60 - 47)²/5

= √144 + 49 + 4 + 64 +169/5

= √430/5

= √86

= 9.273618495

Approximately = 9.27

5 0
2 years ago
Elijah calculated the area of a circle to be 900π units². Which of the following was the radius of the circle?
scZoUnD [109]

Answer: A. 30

Step-by-step explanation:

The formula for the area of a circle is pi*r^2, where r is the radius of the circle.

900pi = pi*r^2

Divide both sides by pi.

900 = r^2

Square root both sides.

r = +/- 30.

Since the radius cannot be negative, the answer is 30 units.

7 0
2 years ago
Use the angle and the given side to solve for the value of x. Round to the nearest tenth.57°6.х
Svetllana [295]

Given data:

The first angel given is ∠1=54 degrees.

T

7 0
1 year ago
A tree cast a shadow 21 meters long
Delicious77 [7]

Step-by-step explanation:

I do not understand .____.

5 0
2 years ago
Use the drop-down menus to identify the parts of the pyramid.
sveticcg [70]

Answer:

D corresponds to the base.

Ethire C or A corresponds to the height.

I'm sorry, that's all I know. I'm new to this kind of math.

Step-by-step explanation:

4 0
3 years ago
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