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3 years ago

9. Identify the correct property being shown.

Mathematics

2 answers:

BaLLatris [955]3 years ago

4 0

Answer:

-16.4, (commutative property)

Step-by-step explanation:

(add, because they are both negatives) -5.2+(-8.4)= -13.6

Then add the (-2.8): -13.6 + (-2.8) = -16.4

Thats your first equation!!!

do the same thing for the other one, and by the way it the same answer.

Its commutative prop because its just switching positions and its adding negatives.

mixer [17]3 years ago

4 0

The answer above me :))

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Use the expression you wrote to predict the number of dreams that include people you know out of 28

Elza [17]

Answer:

the number of dreams that include people you know out of 28 is 21

Step-by-step explanation:

Here is the complete question:

It is believed that about $\frac{3}{4}$ of our dreams involve people that we know.

So the expression to describe the number of dreams that feature people you know if you have "d" dreams is:

$\frac{3}{4} d$

Now using the above expression we can predict number of dreams that include people you know out of 28. Here 28 represents number of dreams i.e. "d". So expression becomes:

$\frac{3}{4} (28)$

Now simplify the above expression:

$\frac{3}{4} (28)$ = $\frac{3*28}{4}$ = $\frac{84}{4}$ = $21$

Hence the number of dreams that include people you know out of 28 is 21

5 0

3 years ago

Simplify the expression

frez [133]

Answer:

it would equal 12x + 12

:)))

4 0

3 years ago

A manufacturer of tablets receives its LED screens from three different suppliers, 45% from supplier B1, 30% from supplier B2, a

Shalnov [3]

Answer:

a) 0.83 = 83% probability that a LED screen will meet specifications.

b) 0.2892 = 28.92% probability that a LED screen that meets specifications was sent by the second supplier.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

45% from supplier B1, 30% from supplier B2, and the rest from supplier B3.

So 100 - (45 + 30) = 100 - 75 = 25% from supplier B3.

a) Find the probability that a LED screen will meet specifications.

95% of 45%(supplier B1)

80% of 30%(supplier B2)

65% of 25%(supplier B3). So

$p = 0.95*0.45 + 0.8*0.3 + 0.65*0.25 = 0.83$

0.83 = 83% probability that a LED screen will meet specifications.

b) Calculate the probability that a LED screen that meets specifications was sent by the second supplier.

Conditional probability.

Event A: Meets specifications.

Event B: Sent by second supplier.

0.83 = 83% probability that a LED screen will meet specifications.

This means that $P(A) = 0.83$

Meets specifications and is sent by the second supplier.

80% of 30%, so

$P(A \cap B) = 0.8*0.3 = 0.24$

Probability:

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.24}{0.83} = 0.2892$

0.2892 = 28.92% probability that a LED screen that meets specifications was sent by the second supplier.

7 0

3 years ago

What is the range of the relation shown on the graph?

Eddi Din [679]

you have to look at a graph in order to figure out the answer so it would be... -9, 7 for the top left

9, 4 for the top right

0, -3 for the coordinatate in the middle

-5, -2 for the bottom left

and 1, -8 for the bottom right

7 0

3 years ago

What is an example of proportional relationship

Dennis_Churaev [7]

Example: Oranges are sold in a bag of 5 for $2. The ratio of roanges to cost is 5:2 if i had 20 oranges for ? cost it would look like: 5/2=20/?

3 0

3 years ago