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zlopas [31]
3 years ago
13

Rs 7.65 + Rs 8.65please solve this for me ​

Mathematics
1 answer:
IgorLugansk [536]3 years ago
8 0

Answer:

16.30

Step-by-step explanation:

It is 16.30 because 8.65+7.65 = 16.30

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Help please!!! I dont understand these questions<br><br><br>currently attaching photos dont delete
Katyanochek1 [597]

Answer:

  1. b/a
  2. 16a²b²
  3. n¹⁰/(16m⁶)
  4. y⁸/x¹⁰
  5. m⁷n³n/m

Step-by-step explanation:

These problems make use of three rules of exponents:

a^ba^c=a^{b+c}\\\\(a^b)^c=a^{bc}\\\\a^{-b}=\dfrac{1}{a^b} \quad\text{or} \quad a^b=\dfrac{1}{a^{-b}}

In general, you can work the problem by using these rules to compute the exponents of each of the variables (or constants), then arrange the expression so all exponents are positive. (The last problem is slightly different.)

__

1. There are no "a" variables in the numerator, and the denominator "a" has a positive exponent (1), so we can leave it alone. The exponent of "b" is the difference of numerator and denominator exponents, according to the above rules.

\dfrac{b^{-2}}{ab^{-3}}=\dfrac{b^{-2-(-3)}}{a}=\dfrac{b}{a}

__

2. 1 to any power is still 1. The outer exponent can be "distributed" to each of the terms inside parentheses, then exponents can be made positive by shifting from denominator to numerator.

\left(\dfrac{1}{4ab}\right)^{-2}=\dfrac{1}{4^{-2}a^{-2}b^{-2}}=16a^2b^2

__

3. One way to work this one is to simplify the inside of the parentheses before applying the outside exponent.

\left(\dfrac{4mn}{m^{-2}n^6}\right)^{-2}=\left(4m^{1-(-2)}n^{1-6}}\right)^{-2}=\left(4m^3n^{-5}}\right)^{-2}\\\\=4^{-2}m^{-6}n^{10}=\dfrac{n^{10}}{16m^6}

__

4. This works the same way the previous problem does.

\left(\dfrac{x^{-4}y}{x^{-9}y^5}\right)^{-2}=\left(x^{-4-(-9)}y^{1-5}\right)^{-2}=\left(x^{5}y^{-4}\right)^{-2}\\\\=x^{-10}y^{8}=\dfrac{y^8}{x^{10}}

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5. In this problem, you're only asked to eliminate the one negative exponent. That is done by moving the factor to the numerator, changing the sign of the exponent.

\dfrac{m^7n^3}{mn^{-1}}=\dfrac{m^7n^3n}{m}

3 0
3 years ago
12-5x-4kx=y solve for x
Lana71 [14]
Hi there!

12 - 5x - 4kx = y&#10;&#10;-4kx - 5x = y - 12 &#10;&#10;Factor out variable x &#10;&#10;x(-4k-5)=y-12&#10;&#10;x = (y+12)/(4k+5)
3 0
3 years ago
Will give you brilliantest
Zina [86]
I don’t know but maybe 2
6 0
1 year ago
Find the percent of each type of sandwich sold.
elena55 [62]

Answer: 50% of the sandwiches were turkey, 30% were veggie and 20% were tuna.

Step-by-step explanation: The total number of sandwiches sold was 50 in all.

The sales according to type of sandwich were as follows;

25 Turkey

15 Veggie

10 Tuna

50 Total

Since there were 50 sandwiches sold and of these 25 were turkey sandwiches and another 15 were veggie sandwiches, then the remaining which is tuna sandwich is derived as 50 - [25 + 15] which equals 10.

To calculate the percentage per type of sandwich sold;

(a) Turkey is derived as

Percentage turkey = (25/50) x 100

Percentage turkey = 1/2 x 100

Percentage turkey = 50%

(b) Veggie is derived as

Percentage Veggie = (15/50) x 100

Percentage Veggie =  (3/10) x 100

Percentage Veggie = 30%

(c) Percentage tuna = (10/50) x 100

Percentage tuna = 1/5 x 100

Percentage tuna = 20%

5 0
2 years ago
Analyze the diagram below and complete the instructions that follow.
steposvetlana [31]

Answer:

71°

Step-by-step explanation:

  • 84+(2x-1)+(x+8)+(x+5)=360 [angles in a quadrilateral add to 360°]
  • 4x+96=360 [combine like terms]
  • 4x=264 [subtract 96 from both sides]
  • x=66 [divide both sides by 4]

So, angle A measures 66+5=71°

5 0
1 year ago
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