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2 years ago

The cost of 7 calculator is rs. 1750 what will be the cost of 12 calculator

Mathematics

1 answer:

zysi [14]2 years ago

4 0

Answer:

See below.

Step-by-step explanation:

You have to find the unit price.

1750/7=250

Now, multiply the unit price by the desired amount.

250*12=3000

So, 12 calculators will cost 3,000.

-hope it helps

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Are the functions f(x) = (x^2-1)/(x-1) and g(x)= x+1 equal for all x?

Vinvika [58]

$\bf \textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-------------------------------\\\\$

$\bf f(x)=\cfrac{x^2-1}{x-1}\implies f(x)=\cfrac{x^2-1^2}{x-1}\implies f(x)=\cfrac{(\underline{x-1})(x+1)}{\underline{x-1}}
\\\\\\
f(x)=x+1\qquad \qquad \qquad \qquad \qquad g(x)=x+1\\\\
-------------------------------\\\\
\textit{they're, kinda, except that, when x = 1}
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g(x)=(1)+1\implies g(x)=2
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f(x)=\cfrac{(1)^2-1}{(1)-1}\implies f(x)=\cfrac{0}{0}\impliedby und efined$

7 0

3 years ago

Multi-step K is the midpoint of JL, JL=4x-2, and JK=7. Find x, KL, and JL

ddd [48]

If K is midpoint of JL then JK = 0.5JL

JL = 4x - 2; JK = 7

The equation:
0.5(4x - 2) = 7
2x - 1 = 7 |add 1 to both sides
2x = 8 |divide both sides by 2
x = 4

JL = 4(4) - 2 = 16 - 2 = 14

KL = JK = 7

7 0

3 years ago

0.4(2x-9)-0.6(4x+5)=

masha68 [24]

Answer:

From what I can comprehend I believe the answer is 3.2x + -4

Step-by-step explanation:

0.4(2x-9) = 0.8x - 9

0.8x - 9 - 0.6(4x+5)=

0.8x - 9 + 2.4x+5

0.8+2.4 = 3.2x

-9 + 5 = -4

3.2x + -4

5 0

2 years ago

Anne,Ryan and Joel collect empty cans for recycling. They collect a total of 1,925 cans. Anne collects half as many cans as Ryan

elixir [45]

A + R + J = 1925
A = 1/2R
J = 2R

1/2R + R + 2R = 1925
7/2R = 1925
R = 550

J = 2(550)
J = 1100

Joel collects 1100 cans.

3 0

2 years ago

Yo help NO LINKS PLS

s344n2d4d5 [400]

Answer:

19 square millimeter

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

The cost of 7 calculator is rs. 1750 what will be the cost of 12 calculator​

The cost of 7 calculator is rs. 1750 what will be the cost of 12 calculator