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
vfiekz [6]
3 years ago
13

You need a 70% alcohol solution. On hand, you have a 60 mL of of a 25% alcohol mixture. You also have 75% alcohol mixture. How m

uch of the 75% mixture will you need to add to obtain the desired solution ?
Mathematics
1 answer:
podryga [215]3 years ago
7 0

15ml to become more concentrated divide the amount

Step-by-step explanation:

You might be interested in
The sum of two numbers is 15, and the sum of their square is 137. What are the numbers?​
Verdich [7]

Answer:

11 and 4

Step-by-step explanation:

11 squared plus 4 squared = 137

11+4= 15

(I just quickly plugged a few numbers into a calculator that I thought would fit)

Hope this helps :)

7 0
3 years ago
Solve the simultaneous equations x2 + y2 = 10 and x – 3y + 10 = 0.
ch4aika [34]

Answer:

x = - 1, y = 3  or     (-1 , 3)

Step-by-step explanation:

x – 3y + 10 = 0              x = 3y - 10    ... plug in

x² + y² = 10

(3y-10)² + y² = 10

10y² - 60y +90 = 0

y² - 6y + 9 = 0

(y - 3)² = 0

y = 3

x = - 1

3 0
2 years ago
a shop only buys bananas with the lengths between 13 cm and 20 cm. estimate the fraction of the 80 bananas that the shop buys
ddd [48]

Answer:

44/80

Step-by-step explanation:

draw a line from 13cm upwards to the graph line and then draw a horizontal line from that point to the y axis to find that you get 18 bananas

then draw a line from 20cm upwardsto the graph line and then draw a horizontal line from that point to the y axis to find that you get 62 bananas

62-18=44 you do this because the shop buys banana lengths between 13 and 20

only from 13 to 20 = 44

so out of 80 (the total) it should be 44/80

4 0
3 years ago
Read 2 more answers
Helppppppppppppppppppppppppp
KiRa [710]
<h2><em>Answer:</em></h2><h2><em>5</em><em>2</em><em>.</em><em>7</em><em>8</em><em>5</em><em>6</em><em> </em><em>cm</em></h2>

<em>Solution</em><em>,</em>

<em>diameter</em><em>=</em><em>1</em><em>6</em><em>.</em><em>8</em><em> </em><em>cm</em>

<em>radius=</em><em>8</em><em>.</em><em>4</em><em> </em><em>cm</em>

<em>Circumference</em><em> of</em><em> </em><em>circle</em><em>=</em><em>2</em><em> </em><em>pi </em><em>r</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em> </em><em>2</em><em>*</em><em>3</em><em>.</em><em>1</em><em>4</em><em>2</em><em>*</em><em>8</em><em>.</em><em>4</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>5</em><em>2</em><em>.</em><em>7</em><em>8</em><em>5</em><em>6</em><em> </em><em>cm</em>

<em>Hope </em><em>it</em><em> helps</em>

<em>Good </em><em>luck</em><em> on</em><em> your</em><em> assignment</em>

5 0
3 years ago
The percent decrease in the price of bottled water
Rzqust [24]
20% discount I’m pretty sure
5 0
3 years ago
Other questions:
  • Find the point, M, that divides segment AB into a ratio of 5:6 if A is at (0, 22) and B is at (11, 0). A) (5, 12) B) (5, 11) C)
    11·2 answers
  • What is the product of 5/12 * 8/13 in lowest terms
    5·1 answer
  • PLZZZ I NEED THIS QUICK <br> What is [-4.6].
    7·1 answer
  • Use the Pythagorean’s theorem to calculate the length of the hypotenuse of a right triangle with 17 as the length and 15 as the
    13·2 answers
  • Cecilia's new copy machine prints 10 pages and 1/4 minutes how many seconds does it take Cecilia's new copy machine to print one
    10·1 answer
  • FIND THE THE<br> MISSING ANGLE:<br> 70°<br> 30° -
    14·1 answer
  • If there are 49 students in a class 32 are girls and 17 are boys what percent are boys
    5·1 answer
  • I NEED HELP WITH MATH PLEASEEE??!
    8·1 answer
  • Ralph plotted the points (-4, 1) and (-4,-1) on a coordinate grid. What is the distance,
    12·1 answer
  • HELP ME PLEASE SOMEONE!
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!