All categories

2 years ago

Consider the ratio of boys to girls of 4:5.

Mathematics

1 answer:

tamaranim1 [39]2 years ago

6 0

Step-by-step explanation:

$a)$

$4+5=9 (parts)$

$b)$ our total is $9$ our boys are $4\\$

our fraction is $^4/_9$

$c)$ $^5/_9$

$d)$ our whole used to be $9$ but we doubled it so it is $18$

so we double $4$ which equals $8$

$^8/_{18}$

$e)$ $^{10}/_{18}$

Brainliest please

You might be interested in

Guys solve everything or only 2nd one

SVEN [57.7K]

Answer:

Step-by-step explanation:

8 0

3 years ago

ALGEBRA 2

vladimir1956 [14]

Answer:

$\left\{ \begin{array}{ll} a+s+r=350 \\ 4a+2.5s+2r=1095\\r=s-40 \end{array} \right.$

Step-by-step explanation:

Let's define our variables. Let a represent the number of adult tickets sold, s represent the number of senior tickets sold, and r represent the number of senior tickets sold.

We know that a total of 350 tickets were sold. So, the number of adult, student, and senior tickets sold must total 350. Therefore, we can write the following equation:

$a+s+r=350$

We know that each adult ticket costs $4, each student ticket costs $2.50, and each senior ticket costs $2. We are given that a total of $1095 was collected. Therefore, the number of tickets multiplied by their respective price must equal $1095. So, we can write the following equation:

$4a+2.5s+2r=1095$

Finally, we know that 40 fewer senior tickets were sold than student tickets. So, however many students tickets were sold, we can subtract 40 to get the number of senior tickets sold. Therefore:

$r=s-40$

So, our system of equations is:

$\left\{ \begin{array}{ll} a+s+r=350 \\ 4a+2.5s+2r=1095\\r=s-40 \end{array} \right.$

And we're done!

7 0

3 years ago

A car and a motor bike are priced at $19877. If the value of the car is four times the value of the motor bike, how much is the

Jlenok [28]

Answer:

4,969.25

Step-by-step explanation:

$19877 ÷ 4

you van either divide this the long way or the short way either one will give you the same answer so just try it out and see

5 0

2 years ago

Who is Mitt Romney for math I am in 4th grade

lutik1710 [3]

Aww(: well Mitt Romney is a republican candidate

6 0

3 years ago

"If three angles and two sides of two triangles are congruent, are the triangles congruent? Why or why not?"

Anettt [7]

Answer:

yes

Step-by-step explanation:

because the corresponding angles are congruent, the triangles are congruent through CPCTC. If two sides are congruent and an included angle, then the triangles are congruent through the SAS postulate. And if two sides and a non-included angle are congruent then the triangles are congruent through the AAS postulate. Any way of looking at this proves congruency through various postulates, therefore the trianlges are congruent.

3 0

3 years ago