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3 years ago

Translate each sentence into an equation ;( 1 -.. four less than five times a number is equal to 11 = ?

Mathematics

2 answers:

bagirrra123 [75]3 years ago

7 0

5n-4=11
1/2n+15=20
4n+8=12
unless those _ are supposed to be negative signs
then it would be
1/2n+15=-20
and 4n+8=-12

elena-14-01-66 [18.8K]3 years ago

4 0

1) 5x-4=11

2)15+0.5x=9

3)7x-6=20

4)8+4x=12

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Consider Statement A and Statement B below:

wlad13 [49]

Answer:

These two statements are equivalent because statement A is the contrapositive of statement B.

Step-by-step explanation:

In logic, when we have an "if" statement we can have its contrapositive or its converse.

Given a "if p, then q" (p is the hypothesis and q is the conclusion), the converse is "if q, then p", in other words, we interchange the hypothesis and the conclusion.

Now, given a "if p, then q", the contrapositive is "if not q, then not p". In other words, we take the negation of both the hypothesis and the conclusion and then we interchange them.

Now, let's take a look at our statements:

If a and b are two real numbers, and if ab = 0, then either a = 0 or b = 0.

In this case:

p = a and b are two real numbers and ab=0

q = either a = 0 or b = 0

Now, let's take the negative of p and q:

The negative of p would be: a and b are two real numbers and their product is not zero.

The negative of q would be: neither of the two real numbers is zero

Now, given than the contrapositive is "if not q, then not p" we would have:

If neither of two real numbers is zero, then their product is not zero.

We can see that this last sentence is the contrapositive of the first one and thus:

These two statements are equivalent because statement A is the contrapositive of statement B.

3 0

3 years ago

PLEASE ANSWER ASAP!!!!

n200080 [17]

Answer:

The answer is A 15,840, because 5,280 x 3 is equivalent to A

8 0

3 years ago

Read 2 more answers

Amanda is on the swim team. Each week she swims a total of 6000 meters. How many kilometers does she swim each week ?

Alex17521 [72]

Answer: 6 Kilometers

Step-by-step explanation:

1 kilometer = 1000 meters

6 kilometers=6000 meters

6 x 1000=6000

8 0

3 years ago

In a viral pool test it is known that in a group of five (5) people, exactly one (1) will test positive. If they are tested one

creativ13 [48]

Answer:

$\frac{4}{20}$ or 0.2 or 20%

Step-by-step explanation:

For only two tests to be needed this means that the first test would need to come back as negative and the second test would be to come back as positive. Therefore, to find the probability of this happening we first need to find the probability of each individual test and multiply them together.

The first test needs to come back negative, there are four negative individuals out of the total 5 that are in the group. Therefore, the probability of the first test is 4/5.

Now we remove the individual that has just been tested and we are left with 4 total subjects in the group, of which only 1 is positive. Therefore, the probability of the second test is 1/4. Now we need to multiply these two probabilities together to get the probability of only needing two tests.

$\frac{4 * 1}{5 * 4} = \frac{4}{20}$ or 0.2 or 20%

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3 years ago

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