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yuradex [85]
4 years ago
14

What is the value of (-14^0)^-2 A.-1/196 B. 1/196 C. 0 D. 1​

Mathematics
1 answer:
mixer [17]4 years ago
8 0
Hi there! It’s gonna be 1
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Durante a distribuição de bombons para seus netos, vovó Cláudia percebeu que, se distribuísse 11
Aleksandr [31]
<span>During the distribution of bonbons to her grandchildren, Grandma Claudia realized that if she distributed 11 chocolates for each of them, 10 candies would remain. In the meantime, distribute 13 chocolates each of his grandchildren, would lack 6. Based on this information, it is CORRECT to state that the difference between the number of candies and the number of grandchildren is A) 90. B) 30. C) -90. D) -30.

Let n=number of candies,
and c=number of grandchildren
The story expressed in modulo gives the two following equations:
then
mod(n,11)=10  (ten left if each given 11).............(1)
mod(n,13)=-6, or
mod(n,13)=7  (7 left if each given 13)

By enumerating (1), we have
10,21,32,43,54,65,76,87,98,109...
=> 8*11+10=98
By enumerating (2), we have
7,20,33,46,59,72,85,98,101...
=> 8*13-6=98
Hence there are 8 grandchildren and 98 candies.

The difference of the number of candies and the number of grandchildren is therefore 98-8=90.


Another way to get the number of grandchildren is
c=(10-(-6))/(13-11)=8

</span>
5 0
3 years ago
What are the solutions to the equation 2x^2 + 9x =5
Maksim231197 [3]

Answer:

\displaystyle -5 \ and \ \frac{1}{2}

Step-by-step explanation:

2x^2 + 9x =5

we have to move 5 in the other side with a different sign, to get a 2 grade ecuation

2x^2 + 9x -5= 0

now we know

a=2

b=9

c=-5

we have to find delta

\boxed{\Delta=b^2-4ac} \\\\ \Delta=9^2-4\cdot2\cdot(-5)\\ \Delta=81+40 \\ \Delta=121

and now we have to use the formula to find the root square

\displaystyle \boxed{ X_{1,2}=\frac{-b\pm\sqrt{\Delta} }{2a} }

\displaystyle X_1=\frac{-b-\sqrt{\Delta} }{2a} =\frac{-9-11}{2\cdot2}=\frac{-20}{4}  =-5

\displaystyle X_2=\frac{-b+\sqrt{\Delta} }{2a} =\frac{-9+\sqrt{121} }{2\cdot4} =\frac{-9+11}{4} =\frac{2}{4} =\frac{1}{2}

8 0
3 years ago
Read 2 more answers
The perimeter of a regular pentagon is represented by the expression 35d-25. Daryl correctly wrote expression to represent the o
Triss [41]

Answer:

Each one of the sides is equal to 7d-5

Step-by-step explanation:

A regular pentagon has 5 sides of equal length.

The perimeter of a regular pentagon is given by

P = 5s where s is the side length

35d -25 = 5s

Divide each side by 5

(35d-25)/5 = 5s/5

7d-5 =s

Each one of the sides is equal to 7d-5

6 0
3 years ago
Evaluate of the expression when b = -2 and c = 3 ?
xeze [42]
9(-2) + 8(3) + 1 - 6(-2) - 5(3) - 6

-18 + 24 + 1 + 12 - 15 - 6

= -2
7 0
3 years ago
Solve the inequality. 
Bond [772]
5-3a
4 0
3 years ago
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