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3 years ago

Someone help me please

Mathematics

1 answer:

elena55 [62]3 years ago

8 0

It will take him 9 hours

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Hi plz help ASAP tyyy ^^

Aleksandr [31]

Answer:

26.75 units²

Step-by-step explanation:

This shape can be split into 3 triangles and a square. Find the area of each shape then add them all up.

$A(Square)=2(2)=4\\\\A(Triangle)=\frac{1}{2}(2)(2)=2\\\\A(Triangle)=\frac{1}{2}(5)(2)=5\\\\A(Triangle)=\frac{1}{2}(9)(3.5)=15.75\\\\A(Shape)=4+2+5+15.75=26.75$

Therefore, the area of the shape is 26.75 units².

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3 years ago

Expand and simplify (x-3)(2x+1)(x+1)

lions [1.4K]

Answer: x(2x=1)(x+1)-3(2x+1)(x+1)

Step-by-step explanation:

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3 years ago

If i run 10 kilometers in 1 hour how many kilometers do i run in 2 and a half hours

Ludmilka [50]

10 kilometers per hour
in 2.5 hours distance = 10 * 2.5 = 25 kilometers

8 0

3 years ago

If the scale of a map is 2 centimeters=21 kilometers, then what is the actual distance of 14 millimeters?

Ad libitum [116K]

Answer:

14.7 km

Step-by-step explanation:

Given:

Scale of a map is 2 cm = 21 km.

We know that, 1 cm = 10 mm

Therefore, 2 cm = 2 $\times$ 10 = 20 mm

Therefore, the scale of the map is, 20 mm = 21 km

Now, let the actual distance be 'd' km for 14 mm.

Using proportion of the two quantities, we get:

$\frac{d}{14}=\frac{21}{20}$

Multiplying both sides by 14, we get:

$\frac{d}{14}\times 14=\frac{21}{20}\times 14\\d=\frac{21\times 14}{20}=\frac{147}{10}=14.7\ km$

Therefore, the actual distance of 14 mm is 14.7 km.

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3 years ago

Can someone help me plz

kodGreya [7K]

A triangular pyramid has 4 sides, all of which are triangles. The net usually looks like the upside-down version of the Legend of Zelda logo.

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4 years ago