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Reika [66]
3 years ago
9

Two -thirds of the children in the fourth grade class are girls. If there are 18 girls, what is the total of children in the cla

ss
Mathematics
1 answer:
Yanka [14]3 years ago
4 0
There are 27 children in the class.

18 divided by two equals 9
9 times 3 is 27
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Plz help!!!! Number 23
Minchanka [31]

Answer:

 (0 + m)/2, (0 + n)/2.

Step-by-step explanation:

The  x coordinate of the  midpoint must be halfway  between the x coordinates of  A and B, and the y coordinate must be  found in the same way.

So the midpoint is  (0 + m)/2, (0 + n)/2.

7 0
3 years ago
The base of a trinagle is increased by 20% and it’s height is increased by 30%. By what percent is the area of the triangle incr
Molodets [167]

Lets say the base is x and the height is y. The new base would be 1.2x and the new height would be 1.3y

Area of a triangle is base times height divided by 2:

1.2x*1.3y/2 = (1.2*1.3 + x*y)/2 = 1.56xy/2 = 0.78xy = 78% of xy

But a normal area would be 50% of xy

78% - 50% = 38%

ANSWER: 38% increase

4 0
3 years ago
The cost of turkey is directly proportional to its weight. If a 12-pount turkey costs $27, how much does a 13-pound turkey cost?
Pavel [41]

Answer:

$29.25

Step-by-step explanation:

Divide the cost of the turkey by 12 to obtain the unit cost then multiply this by 13

cost = \frac{27}{12} × 13 = $29.25


6 0
3 years ago
Read 2 more answers
Write a polynomial in standard form that represents the area of the shaded region.
mr_godi [17]

Area of rectangle is 2x^2+x-45

Step-by-step explanation:

Given:

Length of rectangle = 2x-9

Width of rectangle = x+5

Required:

Area of rectangle

Formula:

Area\,\,of\,\,rectangle=Length*Width

Putting values of length and width:

Area\,\,of\,\,rectangle=Length*Width\\Area\,\,of\,\,rectangle=(2x-9)(x+5)\\Area\,\,of\,\,rectangle=2x(x+5)-9(x+5)\\Area\,\,of\,\,rectangle=2x^2+10x-9x-45\\Area\,\,of\,\,rectangle=2x^2+x-45

So, Area of rectangle is 2x^2+x-45

Keywords: Area of rectangle

Learn more about Area of rectangle at:

  • brainly.com/question/3411756
  • brainly.com/question/6837543
  • brainly.com/question/4713715
  • brainly.com/question/6564657

#learnwithBrainly

3 0
3 years ago
Explain why in a drawer containing only two different colors of socks one must draw only three socks to find a matching pair
Greeley [361]
As pair means that 2 socks with the same color need to be drawn for it to be identified as a pair.
However there is a probability that if u only pick 2 socks, then they could kid each have different COLORS.
By picking 3 socks (bearing in mind there are only 2 types of color) it’s guaranteed that two socks will have the same color.
5 0
3 years ago
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