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MatroZZZ [7]
3 years ago
7

The difference between two numbers is -1 and their sum is 1. Find the two numbers .

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
8 0

Answer:

My handwriting is not good.

Hope you understood.

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A.The observation deck of tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the
Ainat [17]

Answer:

8.68 seconds

Step-by-step explanation:

Given:

Height of the deck above the street, s = 370 m

Since the condition is of free falling

thus,

initial speed, u = 0

Acceleration of the penny = acceleration due to gravity, g = 9.81 m/s²

Now,

from Newton's equation of motion, we have

s=ut+\frac{1}{2}at^2

here,

s is the distance

a is the acceleration

t is the time

on substituting the values, we get

370=0\times t+\frac{1}{2}\times9.81\times t^2

or

t² = 75.433

or

t = 8.68 seconds

8 0
3 years ago
Subtract the difference of a and 2 from 7
Luden [163]

Answer:

7-(a-2)

Step-by-step explanation:

4 0
3 years ago
Is 0.8 miles more than 0.69
cestrela7 [59]
Yes, because there are zeros after the 8. 0.8 miles is equal to 0.80 miles, which is larger than 0.69 miles
5 0
3 years ago
Read 2 more answers
Divide 42 in a ratio of 1:2:3
Marianna [84]
7:14:21

Add 1,2,3 = 6 
Divide 6 by 42=7
Then 7x1=7
         7x2=14
         7x3=21

6 0
3 years ago
PLEASE HELP TEACHER IS CALLING NAMESSSS
vredina [299]

Answer: 11/21

Step-by-step explanation: Subtract: 67 - 26 = 6 · 67 · 6 - 2 · 76 · 7 = 3642 - 1442 = 36 - 1442 = 2242 = 2 · 112 · 21 = 1121

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of the both denominators - LCM(7, 6) = 42. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 7 × 6 = 42. In the next intermediate step , cancel by a common factor of 2 gives 1121.  

hope this helps

5 0
3 years ago
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