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meriva
2 years ago
8

Arnold and jamie are both performing the same experiment. Arnold does 20 trials and gets 7 positive results. Jamie does 10 trial

s and gets 3 positive results. What is the best estimate for the probability of a positive result. Marking brainliest
A. 1/2
b. 1/3
c. 1/4
d. 1/5
Mathematics
2 answers:
Basile [38]2 years ago
8 0
B
Because 1/2 of 20 is 10 and 7 doesnt have a half so its 1/3
Gnoma [55]2 years ago
3 0

Answer:

B

Step-by-step explanation:

This is all 1/3 of the number of times the experiment was tried to put in perspective john has 10 apples and he gives 3 away that's about 1/3 of the amount of apples

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Which set of sides will make a triangle?
Klio2033 [76]

Answer:

10cm 5cm and 9cm

Step-by-step explanation:

just try this

take any two measurements and add them together if they are larger than the 3rd measurement it will work and all you have to do is do that to each measurement

10+5 is greater than 9

9+5 is greater than 10

9+10 is greater than 5

6 0
3 years ago
Manny’s sister bought school supplies that totaled $457. After a coupon, the total came down to $418. Which equation shows how t
kompoz [17]

Answer:

if you are subtracting then you would : 457-418=39


4 0
3 years ago
If the unit price for watermelon is $0.24 per pound and Jared pays $1.68 for a watermelon, how many pounds does his watermelon w
Vanyuwa [196]
The watermelon weighs 7 pounds

Proof: 

remove the decimal points then divide 168 by 24

168/24 = 7

The watermelon weighs 7 pounds
4 0
3 years ago
Read 2 more answers
Part A: Describe how you can decompose this shape into triangles. (2 points)
kvv77 [185]

Answer:

A: 6 triangles with height 10.4 inches each and base 12 inche

B: 62.4 square inches

C: 374.4 square inches

Step-by-step explanation:

Part A: You can form a triangle by connecting E to the top of the segment and connecting the top of the segment to D. Recreating this with each section will create 6 triangles with height 10.4 inches each and base 12 inches.

Part B: The area of a triangle is A = 1/2b*h. Substitute h = 10.4 and b = 12.

A = 1/2*10.4*12 = 62.4

Part C: There are 6 triangles each with area 62.4. So the area of the whole figure will be 6*62.4 = 374.4.

8 0
3 years ago
A student has an average of 78 on seven chapter tests. If the student's scores on six of the tests are 76, 74, 76, 80, 83, and 9
zhenek [66]

Answer:

The score is 66

Step-by-step explanation:

Say the unknown score is x

Average = Total score/no of occurrence

78 = (x + 76 + 74 + 76 + 80 + 83 + 91)/7

78 × 7 = x + 76 + 74 + 76 + 80 + 83 + 91

546 = x + 480

546 - 480 = x

66 = x

∴ x = 66

4 0
3 years ago
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