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
timurjin [86]
3 years ago
12

A pharmacist has two vitamin-supplement powders. The first powder is 10% vitamin B1 and 30% vitamin B2. The second is 15% vitami

n B1 and 20% vitamin B2. How many milligrams of each powder should the pharmacist use to make a mixture that contains 80 mg of vitamin B1 and 200 mg of vitamin B2?
Biology
1 answer:
Basile [38]3 years ago
7 0

Answer:

560 mg of powder 1 and 160 mg of powder 2

Explanation:

Let "X" denotes weight of powder 1 added to the new mixture and  "Y" denotes weight of powder 2 added to the new mixture

Total weight of vitamin B1 in the mixture is equal to 80 mg

Total weight of vitamin B2 in the mixture is equal to 200 mg

Equation 1

0.1 X + 0.15 Y= 80

Equation 2

0.3 X + 0.2 Y= 200

Let us simplify the above two equations, we will get

10 X + 15 Y = 8000\\3X + 2Y = 2000

2 (10 X + 15 Y = 8000), 20X + 30 Y = 1600015(3X + 2Y = 2000), 45X +30Y = 30000\\25 X = 14000\\X = 560

Substituting value of X in equation 2 we get

0.3 * 560 + 0.2 Y = 200\\0.2 Y = 200 - 168\\Y = 160

You might be interested in
Planting trees reduces destruction to homes and crops by serving as ___ during typhoons and storms.
geniusboy [140]

Answer:

Windbreakers

Explanation:

Income and fertilizers have nothing to do with it, so those are not it. Then there are shelter and windbreakers. It kind of acts as a shelter, but mainly it protects crops and homes by acting as a windbreaker. If it was shelter, that would mean that the crops would mainly be planted under the trees to reduce damage from storms and typhoons. Therefore, it is D) Windbreakers.

Please Mark Brainliest!

3 0
3 years ago
List all the planets of our solar system from largest to smallest orbital radius.
Anna11 [10]

To ensure that the list stays stuck, just think of something along the lines of “Mercury Met Venus Every Night Until Saturn Jumped.” Essentially, this indicates that the size of the planets in order from smallest to largest is Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, and Jupiter.

8 0
2 years ago
Read 2 more answers
Select all that apply. Choose the cells that are diploid. egg nerve bone sperm muscle
Natali5045456 [20]
The diploid cells in this case include nerve cell, bone cell and muscle cell. A diploid cell is a cell that contains two sets of chromosomes, which is double the haploid chromosome number. They include all the somatic cells with exception of germ line cells. Gametes are haploid cells meaning they only have one set of chromosomes. During sexual reproduction, gametes (sperm and egg cells) fuse at fertilization to form a diploid zygote which develops into a diploid organism.
8 0
2 years ago
Read 2 more answers
What factor determines when an animal species will enter an ecosystem in succession? a. minerals b. food availability c. competi
Karolina [17]

The correct answer is (C) competition which determines the succession of an animal in the ecosystem.

<h3>What factors influence when an animal species enters a successional ecosystem?</h3>

Interaction and competition among species in a certain environment is a biotic element of ecological primary succession. When succession begins and the first species, known as pioneer species, alter the environmental structure, new species that are more tolerant of the new conditions move in.

These communities gradually replace one another until a "climax community"—such as a mature forest—is attained or a disturbance, such as a fire, occurs.

Learn more about animal ecosystem refer:

brainly.com/question/842527

#SPJ4

7 0
2 years ago
Can someone help me please?
SCORPION-xisa [38]
1. light morph
2. Dark morph
3 0
2 years ago
Read 2 more answers
Other questions:
  • when is it best to use the displacement method to determine the volume of a soild?select all that apply
    14·1 answer
  • Mr. r's beta-thalassemia is causing him to destroy his red blood cells too rapidly. let's review the red blood cell life cycle a
    7·1 answer
  • Moving tectonic plates can form<br><br> mountains<br><br> deltas<br><br> rivers<br><br> sand dunes
    14·2 answers
  • the caterpillar, which is the larval stage of a butterfly, is very diffrent from its adult form. which phenomenon is responsible
    10·1 answer
  • Which statement is true about DNA replication?
    5·1 answer
  • what would happen if there was an increase in the number of free hydrogen ions or protons in the intermembrane space of the mito
    7·1 answer
  • Match each description to the appropriate tool. measures a variety of data, including pH levels and conductivity measures temper
    9·2 answers
  • What are the method of preventing soil erosion?<br><br>don't spam​
    5·2 answers
  • An increase in ATP levels would tend to ____________ the PDH complex. Activate inhibit phosphorylate
    8·1 answer
  • Which organelle is responsible for producing the energy for cellular processes?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!