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3 years ago

Please Help Algebra II

Mathematics

1 answer:

harkovskaia [24]3 years ago

8 0

The student buys 3 small notebooks and 3 large notebooks

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Is 7 a solution of 5x - 3 = 12?

V125BC [204]

Answer:

Step-by-step explanation:

5x - 3 = 12

5x=12+3

x=15/5=3

x=3

substitute x with 7 to find if it is a solution :

5(7)-3=12

35-3 ≠12 ( so no 7 is not a solution)

3 0

3 years ago

How is Demoragan's law used in logic ?

Mekhanik [1.2K]

Answer:

Step-by-step explanation:

In propositional logic and Boolean algebra, De Morgan's laws are a pair of transformation rules that are both valid rules of inference. ... The rules allow the expression of conjunctions and disjunctions purely in terms of each other via negation.

4 0

3 years ago

Read 2 more answers

Five of Teddy’s six cousins can

Sliva [168]

Answer: 0.83

Step-by-step explanation:

The fraction of Teddy's cousins what can do push-ups is $\frac{5}{6}$ . We get this fraction because the problem states that 5 of Teddy's 6 cousins can do 15 push-ups. Now that we have our fraction, we divide to get our decimal.

$\frac{5}{6} =0.83$

7 0

3 years ago

3. Sophia starts a job at a restaurant. She

erastova [34]

Answer:

Step-by-step explanation:

x_0=0

x_1 = $40

so delta change is $40. Now we can write the equation as

y = 40x, where y is the total saving account amount.

So after the 6th deposit, her total saving is $240.

y = 40(6) => 240

7 0

3 years ago

A study by a reputable research organization found that when presented with prints from the same individual, a fingerprint expe

Llana [10]

Answer:

a. 0.6899

b. 0.1642

Step-by-step explanation:

a. Given the probability of success is 0.94 for an expert and that the number of pairs, n=6:

-Each attempt is independent and therefore the probability of the events is calculated as:

$P(A \ and \B )=P(A)\times P(B)\\\\P(6)=0.94\times0.94\times0.94\times0.94\times0.94\times0.94\\\\=0.6899$

Hence, the probability of correctly identifying the 6 matches is 0.6899

b.Given the probability of success is 0.74 for a novice and that the number of pairs, n=6:

-Each attempt is independent and therefore the probability of the events is calculated as:

$P(A \ and \B )=P(A)\times P(B)\\\\P(6)=0.74\times0.74\times0.74\times0.74\times0.74\times0.74\\\\=0.1642$

#Hence, the probability of correctly identifying the 6 matches is 0.1642

*I have used the sample size of 6(due to conflicting info/question size).

7 0

4 years ago