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marshall27 [118]
3 years ago
13

Diego measured the length of a pen to be 22 cm. The actual length of the pen is 23 cm. Which of the following is closest to the

percent error for Diego's measurement?
Mathematics
1 answer:
Law Incorporation [45]3 years ago
3 0

Answer: 4.3%

Step-by-step explanation:

100(23 -23)/23

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a lawn is in the shape of a rectangle with a length of 100 feet and a width of 45 feet. how many whole bags of fertilizer must b
leva [86]

Answer:

3 bags

Step-by-step explanation:

45 \times 100 = 4500 \\ 4500 \div 2000 = 2.25

you cant have 0.25 of a bag so you round up to 3.

8 0
4 years ago
Recall, we have five connectives in propositional logic ¬, ∧, ∨, →, ↔ (negation, conjunction, disjunction, conditional and bicon
Free_Kalibri [48]

Answer:

(a) ¬(p→¬q)

(b) ¬p→q

(c) ¬((p→q)→¬(q→p))

Step-by-step explanation

taking into account the truth table for the conditional connective:

<u>p | q | p→q </u>

T | T |   T    

T | F |   F    

F | T |   T    

F | F |   T    

(a) and (b) can be seen from truth tables:

for (a) <u>p∧q</u>:

<u>p | q | ¬q | p→¬q | ¬(p→¬q) | p∧q</u>

T | T |  F  |   F     |    T       |  T

T | F |  T  |  T      |    F       |  F

F | T |  F  |  T      |    F       |  F

F | F |  T  |  T      |    F       |  F

As they have the same truth table, they are equivalent.

In a similar manner, for (b) p∨q:

<u>p | q | ¬p | ¬p→q | p∨q</u>

T | T |  F  |   T     |    T    

T | F |  F  |   T     |    T    

F | T |  T  |   T     |    T    

F | F |  T  |   F     |    F    

again, the truth tables are the same.

For (c)p↔q, we have to remember that p ↔ q can be written as (p→q)∧(q→p). By replacing p with (p→q) and q with (q→p) in the answer for part (a) we can change the ∧ connector to an equivalent using ¬ and →. Doing this we get ¬((p→q)→¬(q→p))

4 0
3 years ago
What should I write
strojnjashka [21]

Answer:

4x

Step-by-step explanation:

You multiply the two numbers together:

Top left, purple tile: 3x(x) = 3x^2

Top right, pink tile: 4(x) = 4x

Bottom left, yellow tile: 3x(2) = 6x

Bottom right, blue tile: 4(2) = 8

Basically u multiply the variable above it and the variable at its left

7 0
3 years ago
Read 2 more answers
What is the completely factored form of x4 + 8x2 – 9?
Charra [1.4K]
<span>x = 3 x = -3<span>  x=  0.0000 - 1.0000 i 
</span><span>  x=  0.0000 + 1.0000 <span>i </span></span></span>
3 0
3 years ago
Read 2 more answers
A right triangle has a rise of 16 and a run of 4.
Pie

Answer:

5/4

Step-by-step explanation:

Make a proportion:

16/4 = 5/x

Cross Multiply:

20 = 16x

x = 5/4

5 0
3 years ago
Read 2 more answers
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