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notka56 [123]
3 years ago
13

Which of the following is another way to express the equation 8 - (-d) = 43?

Mathematics
1 answer:
Alecsey [184]3 years ago
7 0
8 - (-d) = 43
8 + d = 43 <==
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Is 7/10 less than 2/4?
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Answer:

No

Step-by-step explanation:

7/10 is 0.7

2/4 is 0.5

0.7>05

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Step 1: Read and understand the problem statement.

You are given (time, depth) pairs of (20 s, 8 cm) and (40 s, 0 cm) and asked to write an equation that describes the relationship of depth (y) to time (x).

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You can expand this to
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/d/e/1FAIpQLSclFkZlgkRij_Rf2abUD8YgyQtKMgZR65VhFeEjQ96N34Edog/formResponse
Pavel [41]

Answer:

Assuming you mean on a number line.

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Solve the system of equations.<br> ​7x−3y=20<br> y=5x−4<br> ​ x= <br> y=
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Answer:

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Step-by-step explanation:

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Seeds are often treated with fungicides to protect them in poor-draining, wet environments. A small-scale trial, involving six t
alukav5142 [94]

Answer:

0.0076 = 0.76% probability that all five plants emerged from treated seeds

Step-by-step explanation:

The plants were chosen without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x successes is given by the following formula:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

In which:

x is the number of successes.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this question:

6 + 6 = 12 seeds, which means that N = 12

6 treated, which means that k = 6

Five sprouted, which means that n = 5

What is the probability that all five plants emerged from treated seeds?

This is P(X = 5). So

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

P(X = 5) = h(5,12,5,6) = \frac{C_{6,5}*C_{6,0}}{C_{12,5}} = 0.0076

0.0076 = 0.76% probability that all five plants emerged from treated seeds

3 0
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