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
Alisiya [41]
3 years ago
6

In brazil, about 20 acres of rainforest are destroyed each minute. at this rate, how much rainforest is destroyed per day?

Mathematics
1 answer:
kondaur [170]3 years ago
7 0
About 28800 acres a day! 
You might be interested in
WILL GIVE BRAINLIEST!!<br> only if you explain ur answer
FromTheMoon [43]
What’s the question LOLOL.
8 0
3 years ago
A chemist has three different acid solutions. The first acid solution contains 25 % acid, the second contains 45 % and the third
liq [111]

Answer:

Wyzant

ALGEBRA WORD PROBLEM

Dorian S. asked • 06/28/17

THREE LINEAR EQUATIONS WITH THREE VARIABLES

A chemist has three different acid solutions. The first acid solution contains 15% acid, the second contains 25%,

and the third contains 70%. He wants to use all three solutions to obtain a mixture of 40 liters containing 45%

acid, using 2 times as much of the 70% solution as the 25% solution. How many liters of each solution should be used?

How to set up as three linear equations to find the answer?

Follow2

Add comment

More

1 Expert Answer

By:

Best

Arthur D. answered • 06/28/17

TUTOR 4.9 (67)

Forty Year Educator: Classroom, Summer School, Substitute, Tutor

ABOUT THIS TUTOR ›

set up 2 equations

the first equation...

15%*x+25%*y+70%*2y=45%*40

0.15x+0.25y+1.4y=0.45*40

0.15x+1.65y=18

multiply all terms by 100

15x+165y=1800

divide all terms by 15

x+11y=120

the second equation...

x+y+2y=40

x+3y=40

x=40-3y

substitute into the first equation x+11y=120

40-3y+11y=120

40+8y=120

8y=120-40

8y=80

y=80/8

y=10 liters

x+3*10=40

x+30=40

x=40-30

x=10 liters

10 liters of 15%, 10 liters of 25%, and 20 liters of 70%

check:

10*15%=1.5

10*25%=2.5

20*70%=14

1.5+2.5+14=18

18/40=9/20=45/100=45%

45%*40=18

hope it helps

please mark brainliest

8 0
3 years ago
PROBABILITY PROBLEM: Can anyone check my answers for this?
Julli [10]
A: it would be 2 fives outta 8 then he picked one more bill out so chances are 4 fives outta 16. making it 1/4 of a probability.
7 0
3 years ago
Given s(x) = 2x - 3 and t(x) = 5x + 4. find the formula and domain for s(x) over t(x) and w(x) = t(x) over s(x)
attashe74 [19]
V(x) = (2x - 3)/(5x + 4)   The domain is all Real numbers except x = -4/5, because if x = -4/5 the denominator would be zero and you cannot divide by zero.{x | x ∈ R, x ≠ -4/5} w(x) = (5x + 4)/(2x - 3)similarly, x ≠ 3/2so, {x| x ∈ R, x ≠ 3/2}
6 0
3 years ago
Select all that apply<br><br> Which of the following names a ray in the drawing
marta [7]

Answer:

CB And A F

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • How many ways can a person with five ​nickels, three​ dimes, and two quarters make a 75-cent purchase from the​ machine?
    10·1 answer
  • which number has a 2 in position where it represents 10 times as much as the 2 in 4,523 a. 241 d. 612 c. 928 b. 2,175
    12·1 answer
  • What is 12 to 44 simlified
    15·2 answers
  • In △ABC, m∠A=19°, a=13, and b=14. Find c to the nearest tenth.
    13·1 answer
  • What is 4.238 x 7.5.​
    7·1 answer
  • If you apply the changes below to the absolute value parent function,
    9·1 answer
  • Please help me friendsss?
    15·2 answers
  • A computer company will sell its new tablet
    14·1 answer
  • Find the value of x.<br><br> DO NOT SEND ME A LINK LIKE THIS tnylnk.gq/7Hrq
    13·2 answers
  • <img src="https://tex.z-dn.net/?f=%5Csqrt%7B90%7D%20%2B%5Csqrt%7B90%7D%20%3D%3F" id="TexFormula1" title="\sqrt{90} +\sqrt{90} =?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!