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tino4ka555 [31]
3 years ago
13

Which option identifies which of the two studies described has the more reliable data set and explains why?

Mathematics
2 answers:
almond37 [142]3 years ago
6 0

Answer:

Study 2 because it has been done 100 times

Step-by-step explanation:

Anna35 [415]3 years ago
4 0
The answer is study 2
Step by step explanation:
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Lisa's test grades are 79, 89 and 90
Vaselesa [24]

Answer:

<u>94</u>

Step-by-step explanation:

Equating the mean to the scores :

  • 88 = 79 + 89 + 90 + x / 4
  • 352 = 258 + x
  • x = <u>94</u>
6 0
2 years ago
Read 2 more answers
Find the area of the shaded region.
Papessa [141]

Answer:

21.46 cm²

Step-by-step explanation:

because the question want only for the SHADED REGION but NOT AREA OF THE SQUARE

(if we just multiply 10x10. you will get the area of a square which is hundered)

To find the shaded region:

1. area of a circle is πr² (we have 4 circle there)

2. Find the area of all circle

# how do we know the radius?

- half of 10 is 5

- 5 is the diameter of each circle

- the radius is half of 5 which is 2.5

- π(2.5)² = 25/4π (area of 1 circle)

3. since we have 4 circle then, 25/4π x 4 = 25π

4. the area of the square is 100cm²

5. we want the shaded region so we have to minus the area of the circle

6. 100 - 25π (use your calculator to find the answer)

answer should be 21.46 cm²

(hope this helps)

8 0
3 years ago
BRAINLIEST!!<br> 17. Complete the statement about parallelogram ABCD.<br> ∠BDC ____
Vsevolod [243]

Answer:

∠ABD; Alternate Interior angles are congruent

Step-by-step explanation:

Sides AB and DC are congruent and parallel.

The transversal is line BD.

So considering this things, ∠BDC and ∠ABD are congruent through alternate interior angle rule

6 0
3 years ago
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Sarah competes in a long jump competition.
ruslelena [56]

Answer:

4.046 m

Step-by-step explanation:

8 0
3 years ago
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hanna buys 3 packs of 36 exposure film and 2 packs of 24 exposure film. she uses 8 rolls of film. how many rolls does she have l
RSB [31]
To solve this problem, first we have to figure out how many total rolls Hanna buys.

3 packs*36 rolls in each pack = 108 total rolls
2 packs*24 rolls in each pack = 48 total rolls

108 rolls + 48 rolls = 156 rolls.

Next, it says that Hanna uses 8 rolls of film.  To model this in our expression, we need to subtract 8 rolls from our total amount.  

156-8 = 146 rolls

Hanna has 146 rolls left.


7 0
3 years ago
Read 2 more answers
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