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Sveta_85 [38]
3 years ago
8

The ratio of boys to girls in Mr. Johnson's after-school club is the same as the ratio of boys to girls in Ms. Greene's after-sc

hool club. There are 4 boys and 12 girls in Mr. Johnson's club. There are 6 boys in Ms. Greene's club. How many girls are in Ms. Greene's club? A 2 B 12 C 14 D 18
Mathematics
2 answers:
nikdorinn [45]3 years ago
8 0

Answer:

18

Step-by-step explanation:

irina [24]3 years ago
5 0

Answer:

D. 18

Step-by-step explanation:

The ratio of boys to girls in Mr. Johnson's after-school club is the same as the ratio of boys to girls in Ms. Greene's after-school club.

There are 4 boys and 12 girls in Mr. Johnson's club.

There are 6 boys in Ms. Greene's club.

to get the number of girls in greene's club we represent it by x

and intrepret it in ratio

4:6 = 12: x

4/6 = 12/x

cross multiply

4x = 6 x12 = 72

x = 72/4 = 18

there are 18 girls in greene's club

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Another real estate agent sold a house for $315,000 last week. If her commission is 1.25% of the selling price of the home, find
Rus_ich [418]

Answer:

$3937.50

Step-by-step explanation:

315,000 * 1.25% = 315,000 * 1.25/100 = 3,150*1.25 = 3937.5

7 0
2 years ago
If you are reading this please help!!!!
Soloha48 [4]

Given:

1.  -3 x^{2}\left(4 x^{3}-7\right)\\$2. $(6 x-5)(2 x+3)$\\3. $(3 x-1)\left(x^{2}+5 x-2\right)$

To find:

The product of the polynomials.

Solution:

1. -3 x^{2}\left(4 x^{3}-7\right) =-3 x^{2}(4 x^{3}) -3 x^{2}(-7)

Multiply the numerical coefficient and add the powers of x.

                          =-12 x^{5}+21 x^{2}

2. (6 x-5)(2 x+3)=6 x(2 x+3)-5(2x+3)

Multiply each term of first polynomial with each term of 2nd polynomial.

Multiply the numerical coefficient and add the powers of x.

                              =12 x^2+18x-10 x-15

                              =12 x^2+8x-15

3. (3 x-1)\left(x^{2}+5 x-2\right)=3 x(x^{2}+5 x-2)-1(x^{2}+5 x-2)

Multiply each term of first polynomial with each term of 2nd polynomial.

Multiply the numerical coefficient and add the powers of x.

                                      =3x^{3}+15 x^2-6x-x^{2}-5 x+2

Add or subtract like terms together.

                                      =3x^{3}+14 x^2-11x+2

The answer for multiplying polynomials:

1. -12 x^{5}+21 x^{2}

2. \  12 x^2+8x-15

3. \ 3x^{3}+14 x^2-11x+2

3 0
3 years ago
38) The length of a rectangle is 15.6 cm correct to 1 decimal place.
Ede4ka [16]

Answer:

38.75

Step-by-step explanation:

perimeter = 2(15.6+3.8) =38.8

lower bound = the smallest value that would round up to the estimated value =38.75

6 0
3 years ago
Double a number decreased by 25.6 is equal to 90 Find the number
marin [14]

Answer:

Step-by-step explanation:

2x-25,6=90

2x=90+25,6

2x=115,6

x=57,8

5 0
3 years ago
Read 2 more answers
A movie rental website charges $5.00 per month for membership and $1.25 per movie.
denis-greek [22]
To solve this problem, I would transfer this word problem into an equation with variables.

let the variable m stand for the amount of movies andrew rents.

5.00+1.25m=16.25

Now that we have our equation, we can just solve it like any other equation.
To do this, first, we would subtract 5.00 from both sides, resulting in the equation

1.25m=11.25

Next, we would divide both sides by 1.25, resulting in your final answer

m=9.

This means that Andrew rented 9 movies if his total was 16.25
4 0
3 years ago
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