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3 years ago

Can someone please help me? I am having a-lot of trouble!

Mathematics

1 answer:

Step2247 [10]3 years ago

3 0

Answer:

Step-by-step explanation:

Cost of 5 packet = $ 2m

Cost of 1 packet = $\frac{2m}{5}$

Cost of 3 packets = $\frac{2m}{5}*3=\frac{6m}{5}$

Change receive by her = $10 -\frac{6m}{5}\\\\$

$=\frac{10*5}{1*5}-\frac{6m}{5}\\\\=\frac{50}{5}-\frac{6m}{5}\\\\=\frac{50-6m}{5}$

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Answer:

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3 years ago

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3 years ago

NEED HELP A triangle is cut from a rectangle. The height of the triangle is half of the unknown side length s. The area of the s

Nesterboy [21]

Answer: 14s - 7s/2 = 84

Step-by-step explanation:

Given that s is the length of the unknown side:

Area of the shaded region = 84

Area of rectangle - Area of triangle = 84

Area of rectangle = L * W

= 14 * s

= 14s

Area of triangle = ¹/₂ * base * height

= ¹/₂ * 14 * s/2

= 7s/2

Area of shaded region:

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Solving for s:

14s - 7s/2 = 84

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3 years ago

[ f(x) = 3x + 2 g(x) = x2 Find gf(5) Find fg(x)

marusya05 [52]

Answer:

gf(5) = 289.

fg(x) = 3x^2 + 2.

Step-by-step explanation:

f(5) = 3(5) + 2 = 17

So gf(5) = 17^2 = 289.

fg(x) = 3(x^2) + 2 (we replace the x in f(x) by g(x)).

= 3x^2 + 2.

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4 years ago