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
alexgriva [62]
3 years ago
11

city water tank holds 20 gallons of water. A technician empties 25% of the tank. How many more gallons of water must be removed

from the tank so that it has 2/5 of the water that it started with?
Mathematics
1 answer:
eduard3 years ago
7 0

Answer:

7

Step-by-step explanation:

You might be interested in
Plz plz plz subscribe to my channel called CookieFunTime.
aniked [119]

Answer:

Ok,I will subscribe your channel

4 0
2 years ago
Mrs. Gomes found that 40% of students at her high school take chemistry. She randomly surveys 12 students. What is the probabili
zlopas [31]

Answer:

The correct answer to the following question will be "0.438".

Step-by-step explanation:

Just because Mrs. Gomes finds around 40% of students in herself high school are studying chemistry.  

Although each student becomes independent of one another, we may conclude:  

"x" number of the students taking chemistry seems to be binomial to p = constant probability = 0.40

Given:

Number of surveys

= 12

Exactly 4 students have taken chemistry:

=P(X\leq4)

=P(x=0)+P(x=1)+P(x=2)+P(x=3)+P(x=4)

=\Sigma_{0}^{4} C_{r}(0.4)^r(0.6)^{12-r}

On substituting the above equation, we get the probability of approximately "0.438".

So that the above would be the appropriate answer.

5 0
3 years ago
sarah and kelvin are calculating the area of a circle with a radius of 52cm kelvin ises 3.14 for pi when calculating this area w
alukav5142 [94]
<span>The most accurate answer is Sarah's with 8,494.84 cm2. While Kevin's answer is accurate if you're using 3.14 for pi, pi is an infinite number and does not end at the 2 decimals he used.</span>
3 0
3 years ago
PLEASE HELP ME OUT <br><br> Convert the following<br><br> 35 mL = _____dL<br><br> 950 g = _____ kg
MArishka [77]

Answer:

950 g = 0.95 kg

35 mL = 0.35 dL

hope this helps

6 0
3 years ago
Read 2 more answers
What is x^2+8x-5 in vertex form? Please explain.
faust18 [17]
x^2+8x-5=\\&#10;x^2+2\cdot4\cdot x-5=\\&#10;x^2+2\cdot4\cdot x+4^2-4^2-5=\\&#10;(x+4)^2-16-5=\\&#10;(x+4)^2-21&#10;
5 0
3 years ago
Read 2 more answers
Other questions:
  • Lydia uses 8.9 pints of blue paint and white paint to paint her bedroom walls. 4 5 of this amount is blue paint, and the rest is
    15·1 answer
  • Which of the following transformations does not preserve distance and angle measures?
    8·2 answers
  • betty has a cow.the cow produces 5 liters of milk in a day. if the cows diet is improved the cow will produce 200% more milk.how
    15·2 answers
  • A national magazine stated that atâ most, 16% of millennials have a sports club membership. Formulate an appropriateâ one-sample
    7·1 answer
  • 157/14 written as a Mixed number
    15·2 answers
  • On a map,1 in. represents 12 mi. Two cities are 6 1/2 in. on a map. How far apart are the actual cities? A. 78 mi B. 72 1/2 mi C
    5·1 answer
  • This graph represents a transformation of the parent cube root function. Replace the values of h and k to create the equation of
    14·1 answer
  • Jim is 4 years older than mark if the sum of their ages is 44 find the age of each person
    10·1 answer
  • The lunch special at Scott's Restaurant is a sandwich, a drink and a dessert. There are 3 sandwiches, 1 drink, and 2 desserts to
    13·1 answer
  • Please help! I'll give 50 points!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!