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riadik2000 [5.3K]
3 years ago
6

And a class of 30 children’s 60% of the children are girls how many girls are in the class

Mathematics
1 answer:
drek231 [11]3 years ago
3 0

Answer:

18 girls

Step-by-step explanation:

60%=60/100=6/10=3/5

3/5 of the class are girls.

So 3/5*30 students are girls.

So 3*6 students are girls.

So 18 students are girls.

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Please help me with geometry
sladkih [1.3K]

Answer:

A. If the side lengths are the same, then a triangle is not scalene.

Step-by-step explanation:

A triangle can be defined as a two-dimensional shape that comprises three (3) sides, three (3) vertices and three (3) angles.

Simply stated, any polygon with three (3) lengths of sides is a triangle.

In Geometry, a triangle is considered to be the most important shape.

Generally, there are three (3) main types of triangle based on the length of their sides and these include;

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6 0
3 years ago
Using appropriate properties, find the value of 249² - 248²
Lady_Fox [76]

Answer:

\boxed{\bold{\huge{\boxed{497}}}}

Step-by-step explanation:

=> \sf 249^2 - 248^2

<u>Using Formula</u> \sf a^2 - b^2 = (a+b)(a-b)

<u><em>Where </em></u>

a = 249

b = 248

=> \sf (249+248)(249-248)

=> \sf (497)(1)

=> 497

3 0
3 years ago
Help anyone please i need it
zheka24 [161]

Answer:

The sum is equal to -905,200

Step-by-step explanation:

we know that

The formula to calculate the sum is equal to

Sn=n\frac{(a1+an)}{2}

In this problem

n=775 -----> number of terms

a1 is the first term

a1=(-3(1)-4)=-7

an is the last term

an=(-3(775)-4)=-2,329

substitute

Sn=775\frac{(-7-2,329)}{2}=-905,200

4 0
3 years ago
4/5 + 8/10 plz help with this
Lemur [1.5K]
 <span>4/5 + 8/10 =1.6

i hope this help</span>
5 0
3 years ago
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7 0
4 years ago
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