Multistep Sandy charges each family that she babysits a flat fee of $10 for the night and an extra $5 per child.kimmi charges $2
2 answers:
Step-by-step explanation:
Consider the provided information.
Sandy charges each family that she babysits a flat fee of $10 for the night and an extra $5 per child.
Let x is the number of child, Sandy charges fixed fee of $10 and $5 for each child. Thus, the charges for one night is:
Kimmi charges $25 per night no matter how many children a family has. Thus, the charges for one night is:
Now we need to write an equation that would compare the two girls charges:
Thus, the required equation is .
Now we need to find how many children a family have in order to be the same charges.
For the same charges solve the equation as shown:
So, the number of children has to be 3 for same charge.
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Answer:
Step-by-step explanation:
The figure consists of 2 rectangles.
<u>Rectangle 1 Area:</u>
Length = 5 cm
Width = 2 cm
Area = Length * Width
A = 5 * 2
A = 10 cm²
<u>Rectangle 2 Area:</u>
Length = 4 cm
Width = 2 cm
Area = 2 * 4
A = 8 cm²
<u>Area of the whole figure:</u>
= Rectangle 1 + Rectangle 2
= 10 + 8
= 18 cm²
Hope this helped!
<h3>~AH1807</h3>Answer:
% of the students prefer biology.
Step-by-step explanation:
Let's read and write all the data from the question.
100 students are interviewed to see which of biology, chemistry and physics they prefer.
Therefore, we have three categories to classify the students :
A student that prefers biology
A student that prefers chemistry
And a student that prefers physics
52 of the students are girls. Therefore,
students are boys.
29 of the girls like biology best. In order to answer the question, we will only need the amount of boys that prefer biology and sum them to the amount of girls that like biology best.
24 of the boys prefer physics. Therefore,
is the sum of the boys that prefer chemistry and biology.
13 out of the 21 who prefer chemistry are girls. Therefore,
are boys that prefer chemistry.
If 24 is the sum of the boys that prefer chemistry and biology ⇒
are boys that prefer biology.
If we sum is the number of students that prefer biology.
If we want to calculate the percentage we need to divide the amount of students that prefer biology by the total of students interviewed and then multiply that number by 100 :
%
45 % of the students prefer biology.