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Alex
2 years ago
6

I don't know how to solve this

Mathematics
1 answer:
agasfer [191]2 years ago
4 0

Answer:

Hello,

Step-by-step explanation:

using Thalès 's théorem :

\dfrac{x}{x+10} =\dfrac{4}{10} \\\\10x=4x+40 \ (cross\ products)\\\\6x=40\\\\x=\dfrac{20}{3} \ (simplified\ by\ 2)

x≈6.7 (i don't know what d.p. means , perhaps 1 decimal after the point)

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Answer:

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Step-by-step explanation:

8 0
3 years ago
Tristan had 1/3 lb of grapes at home he went to the store and bought 3/8 lb of grapes what fraction of a pound of grapes does Tr
Black_prince [1.1K]

Answer:

Tristan has a 17/24 lb fraction of a pound of grapes now.

Step-by-step explanation:

Given

  • The number of grapes Tristan had at home = 1/3 lb
  • The number of grapes Tristan had at the store = 3/8 lb

To determine

What fraction of a pound of grapes does Tristan have now?

In order to get the total fraction of a pound of grapes, all we need is to add the number of grapes Tristan had at home and the number of grapes Tristan had at the store.

i.e.

Current number grapes = 1/3 + 3/8

Least Common Multiple of 3, 8: 24

Adjust fractions based on L.C.M

                                          = 8/24 + 9/24

Apply the fraction rule:   \frac{a}{c}+\frac{b}{c}=\frac{a+b}{c}

                                           = (8 + 9) / 24

                                            = 17/24 lb

Therefore, Tristan has a 17/24 lb fraction of a pound of grapes now.

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Answer:

26 sqrt(5) + 2 sqrt(10)

Step-by-step explanation:

2 sqrt(5) *(13+sqrt(2))

Distribute

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