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3 years ago

How many toothpicks are needed to build the tree on day 100?

Mathematics

2 answers:

Masja [62]3 years ago

8 0

Answer:

100= 4 + 3 (100-1)

4+3 (99)

4 + 297 is 301

Step-by-step explanation:

The first row starts with 4 toothpicks, and they increase by +3 in each row. The first tree is already accounted for which makes the 4 + 3, and why I have 100-1. The teacher said the answer was correct but I doubted the equation. Can you tell me if this is correct?

Mariana [72]3 years ago

4 0

Answer:

100 x 4 = 400 - 91 = 309

Step-by-step explanation:

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In April, The Kazbaas drove 760 miles in their tour van.

DedPeter [7]

9514 1404 393

Answer:

£135.98

Step-by-step explanation:

$(760\text{ mi})\dfrac{1\text{ gal}}{29.5\text{ mi}}\cdot\dfrac{4.55\text{ L}}{1\text{ gal}}\cdot\dfrac{\pounds1.16}{1\text{ L}}=\dfrac{760\cdot4.55\cdot\pounds1.16}{29.5}\\\\=\boxed{\pounds135.98}$

It cost £135.98 for petrol in April.

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2 years ago

What is the height of the triangle? (:

gladu [14]

Answer:

Step-by-step explanation:

A=1/2bh and do the math. multiply the base (b) by 1/2, then divide the area (A) by the product. the result of the value will be the height of your triangle

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3 years ago

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Requie<br> 2) 20 + (-45)

harkovskaia [24]

Answer:

20 + (-45) = -25

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2 years ago

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Sarah goes for a run around her neighborhood. She runs 2.5 miles in 20 minutes. Sarah’s average speed is ______ miles per minute

MrMuchimi

I think I would first convert it to hours to solve it and then back to minutes at the end. Super strange it’s been asked for in minutes.

So to convert 20 minutes into hours, you need to multiply by 3.

This means you need to do the same to the other side, cause if they’ve travelled 2.5 miles in 20 minutes, they’d travel 3 times that in an hour.

So this is 7.5m/ph

But then they want it in minutes, so I suppose 7.5/60?

So 0.125m/pm?

5 0

2 years ago

How many cubes with side lengths of 1/2 cm does it take to fill up the prism

ELEN [110]

24 cubes can filled up the prism

Solution:

The image of the question is attached below.

Given data:

Length of the prism = 2 cm

Breadth of the prism = 1 cm

Height of the prism = $$\frac{3}{2}$ cm