Mathematics College

The ratio of boys to girls in a group is 7:3 There are 60 more boys than girls. Work out how many girls are there? ​

Answers

Answer 1

Answer:

45 girls

Step-by-step explanation:

There is 4 more boys than girls in each ratio.

60 boys / 4 = 15 groups where there is more boys

3 (girls) x 15 groups = 45 girls in total

Related Questions

Simplify: -5 + 3a +
6 - 4a.

Answers

Answer:

-a+11

Step-by-step explanation:

hard to explain. but should be correct

Any tips for a gaming addicted brother? :-/

Answers

Answer:

Step-by-step explanation:

I would take his phone for a bit and also reduce screen time to 6 hours a week at MOST. It would help a lot.

Find the 10th term of the arithmetic sequence -x + 9, 4x + 14, 9x + 19, ...

Answers

Answer:

44x + 54

Step-by-step explanation:

The nth term of an arithmetic sequence is given by :

Tn = a + (n - 1)d

d = common difference = T2 - T1

d = T2 - T1

a = first term = - x + 9

d = 4x + 14 - (-x + 9)

d = 4x + 14 + x - 9

d = 5x + 5

The 10th term:

T(10) = (-x + 9) + (10 - 1)*(5x + 5)

T(10) = - x + 9 + 9(5x + 5)

T(10) = - x + 9 + 45x + 45

T(10) = 44x + 54

Hence, the 10th term is 44x + 54

Find the number to add to x^2+14x to make it a perfect square trinomial. Write that trinomial as the square of a binomial.

Answers

Answer:

The number is 13

[tex] {x}^{2} + 14x + 13 \\ (x + 13)(x + 1)[/tex]

Step-by-step explanation:

I hope that is useful for you :)

Answer:

Step-by-step explanation:

A woman bought a number of items for $72. She realized that if she had bought 12 more items for the same money, she would have paid $8 less per item. How many items did she buy?

Answers

Answer:

Johannes Gutenberg - Wikipediahttps://en.wikipedia.org › wiki › Johannes_Gutenberg

Johannes Gensfleisch zur Laden zum Gutenberg was a German goldsmith, inventor, printer, and publisher who introduced printing to Europe with his ...

Occupation: Engraver, ‎inventor‎, and printer‎

Born: Johannes Gensfleisch zur Laden zum G...

Died: February 3, 1468 (aged about 68); Mainz‎, ...‎

Known for: The invention of the movable-type ...

‎Early life · ‎Printing method with... · ‎Legacy · ‎References

People also askStep-by-step explanation:

____________________

​

Answers

Answer:

the equation for that line would be y=0

Step-by-step explanation:

The slope is 0 so if one were to plug in 0 as a slope to y=mx+b you would get y=0x which can be simplified to y=0. Hope this helped. :)

Using the graph, determine the coordinates of the vertex of the parabola.

Answers

I don’t know for sure, but I think the vertex is (-5, 9)

If it’s wrong, hopefully this bobcat will make your day better

How many seconds are there in
January?

Answers

Answer: 2,678,400

Step-by-step explanation:

There are 31 days in January and 2,678,400 seconds

5.5 as a mixed number.

Answers

Answer: 5 1/2

Step-by-step explanation:

You keep your whole number which is five, then you see that the other 5 is in the tenths place in the decimal (5.5) so you put 5 over 10 and combine the fraction (5/10) with the whole number (5) and that is 5 5/10. But you see that it is not simplified so you simplify and get 5 1/2. I hope this helps :)

Mixed number is 5 1/2

Jillian tracks her progress on her spelling tests over a period of four weeks. Which list shows her scores from greatest to least
Weeks 1,3,2,4
Weeks 3,1,4,2
Weeks 3,1,2,4
Weeks 1,3,4,2

Answers

Answer: B

Step-by-step explanation:

The pair of equations that can be used to find x and y are:

x + y = 62

(1.02)x = 7

What is equation?

An equation is a  mathematical statement that is made up of two expressions connected by an equal sign.  In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.

Here, we have,

The form of the pair of equations would be:

hours worked last week + hours worked this week = total hours worked both weeks equation 1

(1 + percent increase/100) x hours worked last week = hours worked this week equation 2

x + y = 62 equation 1

(1 + 20/100) ×x = y

(1.02)x = 7 equation 2

The two equations can be solved using either of these three methods:

elimination method

substitution method

graph method

To learn more about mathematical equations, please check: brainly.com/question/26427570

#SPJ2

complete question:

Jillian worked 62 hours this week and last week. She worked x hours last week and y hours this week. She worked 20% more hours this week than last week. What pair of equations can be used to find x and y?

Need help quick please

Answers

Answer:

line 2

Step-by-step explanation:

on line 2 the two minuses at the end turn into a + (where the -2 is there should be a +2) because - x - = +

The letters in VIRGINIA are each written on a separate card. Mark picks one card at random, keeps it, and then picks a second card. What is the probability that he picks an "I" and then picks a consonant?


3/14


3/16


1/4


2/7

Answers

Answer:

okay I would say 1/4

Step-by-step explanation:

the originally eight letters, and then you take one out so there's seven and then your chances of getting the I are two so that's 2/7. then there's only one consonant the R so 1/4.

What is HK?............help me answer this

Answers

Answer

C

Step-by-step explanation:

Please help, test due in 1 hour! I will give brainliest!

Answers

i think it’s a sphere
sorry if it’s wrong

Eric is a car salesman. He earns a weekly salary of $175 plus 4% commission on sales. This
week he sold a car for $35,450.
A) How much commission did he earn this week?
B) What did he earn in TOTAL this week?
(urgent pls show work)

Answers

Answer:

Step-by-step explanation:

the rule for converting yards to feet

​

Answers

the rule is you must multiply by 3

Answer:

1 yard=3 feet

Step-by-step explanation:

If it needs more, then 3 feet=36in.

What is the greatest common factor of 6, 42, and 30?

Answers

Answer:

6

Step-by-step explanation:

I found that the greatest common factor for those numbers is 6

Jacey has 40 pizzas to sell in the concession
stand at a basketball game. Each pizza has
been cut into 8 slices of equivalent size. In the
first hour, Jacey sold 16 3/8 pizzas. In the second
hour, she sold 18 3/4 pizzas. How many pizzas
does Jacey have left to sell?


Plz help

Answers

Answer:

the answer is 16.6 Pizzas

Step-by-step explanation:

16% of 40 is 6.4 that means she sold 6 full pizzas and 0.4 parts of one pizza

add that to 18 is 24.4 pizzas sold and 16.6 to go.

whats x value please help

Answers

Answer:Step-by-step explanation:

x+46=90

x=90-46

x=44°

write an explicit formula for an the nth term of sequence 100,20,4

Answers

Answer:

a_3=4

Step-by-step explanation:

a1 = 100

r = 1/5

an = 100 (1/5)^(n - 1)

so we now have the answer for a_3

a_3 = 100 * (1/5)^(3 - 1)

a_3 = 100 * (1/5)^2

a_3 = 100 * 1/25

a_3 = 4  

i believe this is it, although i'm not entirely sure

good luck :)

**please let me know if this was wrong/not what you were looking for or both**

have a nice day!

What is 2x-3y=-1
y=x-1

Answers

Answer: (4, 3)

Step-by-step explanation:

Let's use substitution.

So for y in the first equation we will substitute the expression for y in the second.

2x - 3(x-1) =  -1

2x -3x + 3 = -1

-1x + 3 = -1

       -3    -3

-1x = -4

-1x / -1 = -4 / -1

x = 4

Now plug in x for the second equation

y = 4 - 1

y = 3

Now check it using the first equation:

2(4) - 3(3) = -1

8 - 9 = -1

-1 = -1

It's true so it's correct

Juan Rios rented a car for a 3-day weekend. The
car cost $35 per day plus $0.15 per mile. Juan
drove the car 425 miles and spent $53.75 on gas.
What was Juan's total cost? What was the cost
per mile?

Answers

Answer:

17000

Step-by-step explanation:

I hope this helps:)

A number, f is positive

Answers

what are you asking?

Answer:

Not enough information.

Step-by-step explanation:

PLS HELP ASAPPP
I really need help

question: write in standard form.

2x^2+x^3-3+4x^5

Answers

Answer:

4x^5 + x^3 + 2x^2 -3

Step-by-step explanation:

Standard form is ( put simply ) the order the numbers are from highest to lowest. So the standard form of the equation would be 4x^5 + x^3 + 2x^2 -3

4x^5 +x^3+2x^2−3

hope this helps!

solve by regrouping 2x2+6x+54+18x

Answers

Answer:

I believe the answer is=2x2+342.

3rd 9-Week Exam
Question: 1-1
Monica is using a coordinate plane to make a design in art class. She wants to reflect a line segment across the x-
axis as part of the design. The line segment has an endpoint at (-7,5) and is 5 units long. Which two ordered pairs
could be the coordinates of the endpoints of the reflection of the line segment?

Answers

Answer:

dgfrngssfrhrfhhkthgfgtuthrruyifrhtuturhfnfbhmxvdg4jfdd

Step-by-step explanation:

xdvbbffyeurudgdifhfjdchd8wixsigfir

A photographer is arranging 3 puppies in a row for a photo. There is one black puppy (B), one tan puppy (T), and one white puppy (W). Which list shows all the possible arrangements of the puppies?
Select one:

BTW, BBB, TTT, WWW, BBT, BBW, TTB, TTW, WWB, WWT

BTW, BWT

TWB, TBW, BTW, BWT, WBT, WTB

TWB, BTW, WBT
If you don't answer, I'll report you!

Answers

There are 6 combinations:
TWB TBW BTW BWT WBT WTB


Find the surface area of the regular pyramid to the nearest tenth

Answers

Answer:

668.17

Step-by-step explanation:

Convert the decimal 0.07 to a fraction.

Answers

Answer:

7/100

Step-by-step explanation:

two decimal places so 100

Write the standard equation of a circle with its center at the origin and radius 3.

Answers

Answer:

9 = x^2+y^2

Step-by-step explanation:

3^2 = (x-0)^2 + (y-0)^2

9 = x^2+y^2

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