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3 years ago

21 POINTS FOR HELP!!!!!!! AND BRAINLIEST!!!!!

Mathematics

1 answer:

Alex Ar [27]3 years ago

6 0

Answer: 2cm

Step-by-step explanation:

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there are 20 children at a library 6 of the children have an average age of five years the remaining children have an average ag

Gelneren [198K]

20 total

6 have average of 5 years
6 x 5 = 30

20-6 = 14

14 have average of 8 years

14 x 8 = 112

112 + 30 = 142

142 / 20 = 7.1 years

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3 years ago

Read 2 more answers

In ΔUVW, w = 44 cm, u = 83 cm and ∠V=141°. Find the area of ΔUVW, to the nearest square centimeter.

Tema [17]

Answer:

$Area \approx 1149\ cm^2$

Step-by-step explanation:

<u>Given that:</u>

ΔUVW,

Side w = 44 cm, (It is the side opposite to $\angle W$ )

Side u = 83 cm (It is the side opposite to $\angle U$ )

and ∠V=141°

Please refer to the attached image with labeling of the triangle with the dimensions given.

Area of a triangle with two sides given and angle between the two sides can be formulated as:

$A = \dfrac{1}{2}\times a\times b\times sinC$

Where a and b are the two sides and

$\angle C$ is the angle between the sides a and b

Here we have a = w = 44cm

b = u = 44cm

and ∠C= ∠V=141

Putting the values to find the area:

$A = \dfrac{1}{2}\times 44\times 83\times sin141\\\Rightarrow A = \dfrac{1}{2} \times 3652 \times sin141\\\Rightarrow A =1826 \times 0.629\\\Rightarrow A \approx 1149\ cm^2$

So, the <em>area </em>of given triangle to the nearest square centimetre is:

$Area \approx 1149\ cm^2$

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4 years ago

Solve for a a=.5×12ft (30ft+42ft)

Anastasy [175]

.5x12 (30+42)
v v
6 * 72= 432 ft

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3 years ago

List all the factors of the composite number 146

Temka [501]

1 and 146
2 and 73
and that's about it

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3 years ago

Write 5.24 in expanded form

Katarina [22]

This is how you write 5.24 in expanded form 5+0.2+0.04

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3 years ago

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