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Wittaler [7]
3 years ago
5

Brett earned scores of 74, 90, and 84 on his first three quizzes this term. What score

Mathematics
2 answers:
zloy xaker [14]3 years ago
7 0

Answer:

92

Step-by-step explanation:

(74 + 90 + 84 + 92) / 4 = 85

kozerog [31]3 years ago
4 0

Answer:

x ≥ 92

Step-by-step explanation:

let 'x' = necessary score

(74 + 90 + 84 + x) / 4 ≥ 85

(248 + x) / 4 ≥ 85

cross-multiply:

248 + x ≥ 340

x ≥ 92

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Find the probability of having 2,3, or 4 successes in five trials of a binomial experiment in which the probability of success i
DiKsa [7]

0.45033504848

Explanation:

The binomial formula is given by
<span>nCk⋅<span>ρk</span><span><span>(1−ρ)</span><span>n−k</span></span></span> thus the result for x would be

<span>p<span>(x=2)</span>=<span>(<span><span>5!</span><span><span>(5−2!)</span>2!</span></span>)</span><span><span>(.4)</span>2</span><span><span>(1−.4)</span><span>5−2</span></span>=0.3456</span>

<span>p<span>(x=3)</span>=<span>(<span><span>5!</span><span><span>(5−3!)</span>3!</span></span>)</span><span><span>(.4)</span>3</span><span><span>(1−.4)</span><span>5−3</span></span>=0.13824</span>

<span>p<span>(x=4)</span>=<span>(<span><span>5!</span><span><span>(5−4!)</span>4!</span></span>)</span><span><span>(.4)</span>4</span><span><span>(1−.4)</span><span>5−4</span></span>=0.027648</span>

<span><span>p<span>(a∪b∪c)</span>=p<span>(a)</span>+p<span>(b)</span>+p<span>(c)</span>−p<span>(a)</span>⋅p<span>(b)</span>−p<span>(a)</span>⋅p<span>(c)</span>−p<span>(b)</span>⋅p<span>(c)</span></span><span>=.3456+.13824+.027648−.047775744−.0095551488−0.00382205952</span></span>

<span>p<span>(a∪b∪c)</span>=<span>0.45033504848</span></span>

6 0
3 years ago
Solve this problem in your notebook using all four steps.
adelina 88 [10]

Answer:

5x = 5(10) = 50 inches

Step-by-step explanation:

Let x = length of shorter piece  then

5x = length of the longer piece

.

x + 5x = 60

6x = 60

x = 10 inches (shorter piece)

.

Longer piece:

5x = 5(10) = 50 inches

7 0
3 years ago
Please help and thank you
djyliett [7]

The answer would be D

G(x) = (X-4)^2

8 0
2 years ago
Read 2 more answers
The earth is approximately 92,900,000 miles from the sun. If 1 mile = 1.61 x 103 m, what is the distance to the sun in meters?
Dmitriy789 [7]

Answer:

here you go

Step-by-step explanation:

5 0
2 years ago
What are the factors of 4
Nimfa-mama [501]
Factors are the numbers another number can be divided from. example-
8÷4=2, 4 is a factor of 8.

so the factors of 4 are 1,2and 4itself. like this-
4×1=4
1×4=4
2×2=4
answer- 1,2 and 4.
7 0
2 years ago
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