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zhannawk [14.2K]
3 years ago
9

Twice a number plus four equals 6. what is the number

Mathematics
1 answer:
Kay [80]3 years ago
4 0
The number is 1. 1+1+4=6
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During a sale, a dress is marked down from a selling price of $60 to a sale price of $57. What is the percent markdown?
marysya [2.9K]

Answer: 05%

Step-by-step explanation:

60-57=3

3/60=0.05

0.05x100=5

5 0
3 years ago
What is the value of 4(25-5)?
sweet [91]
First you subtract 25 from 5 which equals 20 then you multipliy 4 to 20 and you get 80...so 80 is your solution.
7 0
3 years ago
Use a truth table to verify the first De Morgan law (p ∧ q)’ ≡ p’ ∨ q’.
Nutka1998 [239]

Answer:

(p ∧ q)’ ≡ p’ ∨ q’

Step-by-step explanation:

First, p and q have just four (4) possibilities, p∧q is true (t) when p and q are both t.

p ∧    q

t t t

t f f

f f t

f f f

next step is getting the opposite

(p∧q)'

    <em>f</em>

<em>     t</em>

<em>     t</em>

<em>     t</em>

Then we get p' V q', V is true (t) when the first or the second is true.

p' V  q'

f  <em>f</em>  f

f  <em>t</em>  t

t  <em>t</em>  f

t  <em>t</em>  t

Let's compare them, ≡ is true if the first is equal to the second one.

(p∧q)'   ≡     (p' V q')

    <em>f              f </em>

<em>     t              t</em>

<em>     t              t</em>

<em>     t              t</em>

Both are true, so

(p ∧ q)’ ≡ p’ ∨ q’

6 0
3 years ago
6 less than r ?????????????
ollegr [7]

Answer: 6-R

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Which of the following statements is true? The value π is a rational number. The number 0 is a natural number. The number is an
AlexFokin [52]

Answer:

the number -5 is a real number

Step-by-step explanation:

real numbers are basically all numbers.... if you havent met complex numbers yet..

hopefuly this helped

:)

7 0
2 years ago
Read 2 more answers
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