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Papessa [141]
3 years ago
14

Leo has had test scores of 85, 92 and 87. He has one test left. What test score t must he to average at least a 90 for his four

tests?
Mathematics
1 answer:
LenKa [72]3 years ago
5 0
96

The mean of 85+92+87+96=90
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A number is picked randomly in the range [2,8]. If past selection indicates that the numbers picked are less than 5, what is the
yawa3891 [41]

Answer:

a) P = 2/7

b) P = 4/7

c) P = 1/7

Step-by-step explanation:

In the range of [2,8], we have the following integers which are: 2, 3, 4, 5, 6, 7, 8. So this is a total of 7 integers.

a) We look for the probability that the numbers are less than 4, so we conclude that there are possible numbers 2 and 3 out of possible 7, so the required probability is equal to P = 2/7.

b) We look for the probability that the numbers are greater than 4, so we conclude that there are possible numbers 5, 6, 7, 8 out of possible 7, so the required probability is equal to P = 4/7.

c) Based on the previous two examples, we conclude that the required probability is P = 2/7· 1/2=1/7.

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4 years ago
1. A spherical mold is used to create chocolate candy. What is the volume of the mold?
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The equation for volume of a sphere is pi(r)^3 This mean that the equation would be pi(11)^3 which equals 1331pi
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4 years ago
A top-fuel dragster ran a 1/4-mile (1320 ft) race. It had traveled 1305.48 feet after 3.58 seconds and it traveled the entire 13
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3 years ago
Simplify (7 x 10 ^−13) − (4.2 x 10 ^−15).
vazorg [7]

The value of the expression (7 x 10⁻¹³) − (4.2 x 10⁻¹⁵) will be 6.958 x 10⁻¹³. Then the correct option is C.

<h3>What is subtraction?</h3>

It simply implies subtracting something from an entity, group, location, etc. Subtracting from a collection or a list of ways is known as subtraction.

The expression is given below.

⇒ (7 x 10⁻¹³) − (4.2 x 10⁻¹⁵)

Simplify the equation, then the value of the expression will be

⇒ (7 x 10⁻¹³) − (4.2 x 10⁻¹⁵)

⇒ (7 x 10⁻¹³) − (0.042 x 10⁻¹³)

⇒ 6.958 x 10⁻¹³

The value of the expression (7 x 10⁻¹³) − (4.2 x 10⁻¹⁵) will be 6.958 x 10⁻¹³. Then the correct option is C.

More about the subtraction link is given below.

brainly.com/question/4319655

#SPJ2

7 0
2 years ago
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Please help and explain, thanks so much. <br><br> 7 · b^5 / b^4<br><br> (fraction problem)
Kipish [7]

Answer:

b^1 will be the answer

Step-by-step explanation:

b^5/b^4

b^5-b^4=b^1

7 0
3 years ago
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