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nydimaria [60]
3 years ago
14

Help, show work please​

Mathematics
1 answer:
Talja [164]3 years ago
8 0

Answer:

the model has a ratio of 2:5 to the real tower

Step-by-step explanation:

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Brett has a 30 online gift voucher . He plans to buy as many books as he can . The cost of each book is 4. There is also a singl
Nata [24]
7 books with a cost of 28$ then a 2$ charge which will put him right at 30
6 0
3 years ago
Use a truth table to show that P Qand (~PV Q) A (~QV P) are equivalen
kati45 [8]

Answer:  The given logical equivalence is proved below.

Step-by-step explanation:  We are given to use truth tables to show the following logical equivalence :

P ⇔ Q ≡ (∼P ∨ Q)∧(∼Q ∨ P)

We know that

two compound propositions are said to be logically equivalent if they have same corresponding truth values in the truth table.

The truth table is as follows :

P     Q      ∼P     ∼Q     P⇔ Q    ∼P ∨ Q     ∼Q ∨ P        (∼P ∨ Q)∧(∼Q ∨ P)

T     T         F        F             T            T                   T                       T

T     F         F        T             F             F                   T                       F

F     T         T        F             F            T                   F                       F

F     F         T        T             T            T                   T                       T

Since the corresponding truth vales for P ⇔ Q and (∼P ∨ Q)∧(∼Q ∨ P) are same, so the given propositions are logically equivalent.

Thus, P ⇔ Q ≡ (∼P ∨ Q)∧(∼Q ∨ P).

8 0
4 years ago
What is the source of Yangtze river​
belka [17]

Answer:

Qinghai

Step-by-step explanation:

8 0
3 years ago
Don buys 6 kiwis for 3$ what would a customer have to pay for 9 kiwis
kirill [66]

Answer:

It will cost $4.50 for 9 kiwis

Step-by-step explanation:

Lets find the cost per kiwi

$3 / 6 kiwis

.50 per kiwi

Now we have 9 kiwis

$.50 (9)

$4.50

It will cost $4.50 for 9 kiwis

3 0
3 years ago
Read 2 more answers
I spent 3/4 of my money and then I spent 1/5 of what was left.
Monica [59]

Answers:

a) 4/5

b) 1/5

================================================

Let's say you start off with $100. If you spend 3/4 of that, then you spend 75 dollars (because 75/100 = 3/4). Think of it like 75 cents = 3 quarters. If you spend 75 dollars out of 100 total, then you have 100-75 = 25 dollars left after the first round of spending.

If you spend 1/5th of what is left, then you spend $5 on the second round leaving 25-5 = 20 dollars left at the end of the day.

Total up what you spend for both rounds: 75+5 = 80, which divides over the original amount 100 to get 80/100 = 8/10 = 4/5

If you had 20 dollars at he end of the day, out of 100 initially, then 20/100 = 2/10 = 1/5 is the fraction of what you have left.

note how 4/5 and 1/5 add to 5/5 = 1.00 = 100%. This is because the amount you spend and the amount you have left over must add to 100% of all the money you started with

6 0
3 years ago
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