1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bess [88]
3 years ago
10

A group of students went on a field trip. There were 3 boys for every 4 girls inthe group. If there were 20 girls, how many stud

ents in all went on the field trip? 10 points
Mathematics
1 answer:
Margarita [4]3 years ago
7 0

Answer:

15 boys

Step-by-step explanation:

start by dividing 20 by 4

you get 5

5 times 3 next

now you have 15

You might be interested in
Find the value of n that makes DEF-XYZ when<br> DE = 4, EF = 5, XY = 4(n + 1). YZ = 7n - 1, and
oksano4ka [1.4K]

Answer: n=3

Step-by-step explanation:

Understand that you need to set up a proportion before you can try to solve the question through guessing. In this case, YZ would be proportional to XY as EF is proportional to DE. You would write this as: EF/DE=YZ/XY.

Now you want to write an equation. In order to do this remember to multiply by your proportion. Here’s my equation:

5/4(4n+4)=7n-1. Now distribute:

5n+5=7n-1. Now simplify:

6=2n. Now simplify again:

n=3

Hope this helps you with your big ideas math hw!

3 0
3 years ago
Given a sphere of diameter, d. What is the percentage increase in its volume when surface area increases by 21%?
lawyer [7]
<span>S1 = Pi * D1^2
solve for D1
 D1 = sqrt( S1 / pi ) S2 = Pi * D2^2
 S2 = 1.21*S1
S2= 1.21 * Pi * D1^2
 1.21 * Pi * D1^2=
Pi * D2^2
 D2 D2 = sqrt( 1.21 * D1^2)
  Now V2 = pi/6 * D2^3. V2
 = pi/6 ( sqrt(1.21*D1^2))^3 V2
= pi/6 * (1.21 * D1^2)^(3/2) V2
= pi/6 * 1.21^(3/2) * D1 ^3 = (pi/6 * D1^3) * 1.21^3/2 = V1 * 1.21 ^(3/2)
=43% approximately</span>
8 0
3 years ago
Anyone know the answer to this?!?!
Ad libitum [116K]

Answer:

C: 3  x  4 x 4

Step-by-step explanation:

It's obvious for an European since it's simple approximation, the cm is just thrown in to confuse Americans.

6 0
4 years ago
Read 2 more answers
Determine the slope of the line that passes through the points (-5, -4) and (0, 10).
svetlana [45]

so the equation for slope is y2-y1/x2-x2

so this would be -4-10/-5-0 which equals -14/-5 which is the same thing as 14/5

so the answer is 14/5 or if its mixed then 2 4/5

Hope this helps!

6 0
3 years ago
Read 2 more answers
The tax rate is 3.9% what is the tax on 42
stealth61 [152]
42 x .039=$1.64 your welcome I hope this helped you
7 0
3 years ago
Read 2 more answers
Other questions:
  •  The survey asked 948 adults how they would grade the quality of their public schools. Each person gave one response. Find each
    5·1 answer
  • The rectangle below has an area of x^2-4x-12x 2 −4x−12x, squared, minus, 4, x, minus, 12 square meters and a length of x+2x+2x,
    15·2 answers
  • Solve the following equations:44w + 75 = 119
    12·2 answers
  • Given the sequence 12, 9, 6, 3,........ where x = 0, 1, 2......,
    7·1 answer
  • Using the photo above, describe what type of symmetry it has.
    15·2 answers
  • A bicycle has
    15·1 answer
  • The segments shown below could form a triangle.<br><br> A. True<br> B. False
    8·2 answers
  • Debera earns $350 a month. She saves $28 a month. Savings is what percent of her income?
    8·2 answers
  • The ratio of white to red marbles in a bag is 3 to 4.
    10·2 answers
  • If your take-home pay is $64,800 a year, what is the maximum amount that
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!