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
Inga [223]
4 years ago
15

Simplify the numercial expression 13-2x5

Chemistry
2 answers:
nadya68 [22]4 years ago
7 0

Answer:

you multiply 2x5=10 then,

subtract 13-10=3

i have a easier way to do it its called PEMDAS because first you do

Parentheses

Exponents

    Multiply

or Devided (which ever comes first)

    Addition

or Subtract (which ever comes first)

Tema [17]4 years ago
4 0

Answer:

3

Explanation:

2x5 is 10 then 13-10 is 3

You might be interested in
(IMAGE ATTACHED)<br>I dont know what this is asking me, anyone know how to do this?​
kvv77 [185]

Answer:

Oh, you need to get the blue dots, and move them to the table or graph to plot them!

Hope that makes sense!

3 0
3 years ago
How are the three lines of defense the same? They all involve producing fever. They all involve fighting pathogens. They all inv
raketka [301]

Answer:

THEY ALL INVOLVE FIGHTING PATHOGENS

Explanation:

The immune system which is involved in defending the body against infections are diseases involves three lines of defense which are all involved in fighting against pathogens. Pathogens are invaders which when introduced into the body causes harm and therefore makes us sick. The body's first line of defense includes the physical barriers such as the skin, mucous membrane; chemical barriers such as tears, saliva, gastric acid in the stomach. These helps to keep the pathogens from entering the delicate parts of the body and once the pathogens find their way out of the reach of the first line of defense, the second line of defense is initiated. This includes inflammatory effects, swelling, redness, phagocytosis by neutrophils and macrophages. The third line of defense is the actions of lymphocytes which acts on invading microbes. The lymphocytes are of two types; the B and T cells. B cells produces antibodies which fight the antigens and T cells attack the infected cells of the body. There is also the memory cells which keeps information about the invading microbes for future attacks. This enables the body to respond swiftly when next the same type of pathogens attack.

6 0
3 years ago
Read 2 more answers
Three cards with holes are arranged in a straight line. A light is shined through the first card’s hole and travels through all
igomit [66]
C) that light travels in a straight line.
8 0
4 years ago
Read 2 more answers
One similarity between all mixtures and compounds is that both(1) are heterogeneous(2) are homogeneous(3) combine in a definite
givi [52]
Mixture is a combination of two or more substances. The components of the mixture are not chemically reacted and can be separated using physical means.
compound is a combination of two or more substances that are chemically reacted or bound together. The components of the compound cannot be separated except by chemical reactions.

Answer:
<span>(4) consist of two or more substances</span>
5 0
4 years ago
Read 2 more answers
Aspirin that has been stored for a long time may give a vinegar like odour and give a purple colour with FeCl3. What reaction wo
iVinArrow [24]

Answer:

See explanation

Explanation:

The IUPAC name of aspirin is 2-Acetoxybenzoic acid. It is composed of an acetoxy moiety and a benzoic acid moiety.

The compound can be hydrolysed under prolonged storage conditions to yield acetic acid which causes the vinegar like odour.

Also, one of the products of this hydrolysis bears a phenol group which reacts with FeCl3 to give a purple color.

3 0
3 years ago
Other questions:
  • Can you answer the following questions with work, please?A) The conversion of glucose-6-phosphate to fructose-6-phosphate is cat
    12·1 answer
  • What is the density of oxygen gas (O2) at 2.3 atmospheres and 305 Kelvin? Show all of the work used to solve this problem.
    6·1 answer
  • Who can witness a lunar eclipse?
    8·2 answers
  • 3. What are the Earth's Poles? *
    9·2 answers
  • One third of the united states carbon consumption is used to operate what
    8·2 answers
  • A chemical reaction is shown.
    5·1 answer
  • How much heat is required to melt 20 g of gold at 1064.18 °C with a heat of fusion of 64 J/g *
    9·1 answer
  • Please help
    14·2 answers
  • All energy travels in waves true or false
    6·1 answer
  • Name of 2 elements with their symbols derived from its german name
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!