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
Virty [35]
3 years ago
6

Forty students are In Science club. Of those 45% are girls. This percent increase 56% after new girls join the club. How many ne

w girls joined?
Mathematics
1 answer:
stepan [7]3 years ago
8 0
45% of 40 is 0.45×40=18 girls
if x girls join then 56% of 40+x is 0.56(40+x)=18+x
22.4+0.56x=18+x
put together like terms
4.4=0.44x
<span>x=10 girls joined</span>
You might be interested in
Marcus said the ratio of the number of hours he spent doing homework to playing basketball was 2:3. Which statement describes th
lyudmila [28]

Answer:

C

Step-by-step explanation:

4 0
3 years ago
Use the remainder theorem to determine the remainder when 3t2 + 5t − 7 is divided by t − 5. A. 93 B. 43 C. 107 D. 57
Usimov [2.4K]
Using remainder theorem, we get:

P(t) = 3t^{2} + 5t - 7

Substitute t = 5 into the equation:
P(5) = 3(5)^{2} + 5^{2} - 7
P(5) = 75 + 25 - 7 = 93

Thus, we get a remainder of 93 or (A)
7 0
3 years ago
Read 2 more answers
Pleease help with this one math question?
dmitriy555 [2]

Answer:

square root 12^5

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A runner passes the 12​-mi point after 2 hours and reaches the 15​-mi point 30 minutes later. Assuming a constant​ rate, find th
Arturiano [62]

Answer:

6 mph

Step-by-step explanation:

Difference in distance

= 15 - 12

= 3 mi

time taken

= 30 mins

= 1/2 hour

Speed

= 3 ÷ 1/2

= 6 mph

8 0
3 years ago
My teacher won't help i I actually want to learn this can you please help me​
Reika [66]
15 you have to do all the steps thank it this I think
6 0
3 years ago
Other questions:
  • You roll a fair six-sided die twice. Find the probability of rolling a 4 the first time and a number greater than 3 the second t
    8·1 answer
  • Help :(
    7·1 answer
  • I cant understand this hepl me help me
    15·2 answers
  • A khanacademy.org Differential equations: exponential model word problems You might need: Calculator A controversial story comes
    13·1 answer
  • Given that is the midpoint of AB and E is the midpoint of AC, AD =32cm, AE=19cm, and DE=39cm, determine the perimeter of DBCE
    8·1 answer
  • Arielle has a collection of grasshoppers and crickets. She has 561 insects in all. The number of grasshoppers is twice the numbe
    6·1 answer
  • The ratio of the amount of money Karen had to the amount of money Peter had was 2 : 5. After Peter received $75 from his mother,
    14·1 answer
  • HELP!!! I RLY NEED HELP WITH THIS!
    12·2 answers
  • A class has 4 boys and 10 girls. What is the ratio in simplest form that compares number of boys to total number of students? (4
    11·1 answer
  • A rock is thrown into a pool 72 inches deep. The rock sinks at a rate of 4 inches per
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!