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
vlabodo [156]
3 years ago
12

HELLPPPPPPP PLEASEEEEEESSSSSSS Which expression is equivalent to −2.1+(−5.9)+(−3.7) ?

Mathematics
2 answers:
katrin [286]3 years ago
5 0

Combine. Note that one positive and one negative = one negative

-2.1 + (-5.9) + (-3.7) = -2.1 - 5.9 - 3.7 = -11.7

-11.7 is your answer

hope this helps

nika2105 [10]3 years ago
3 0

Hi,

Answer: -11.7

<u>My work:</u> This problem can be easily achieved by taking the number -2.7 and subtracting it with 5.9. (-2.7 - 5.9) Your next step would be to taking the number -8.6 and subtracting it with 3.7. Which brings it to your answer -11.7.

<u><em>My Numerical work:</em></u>

1. -2.1+(-5.9)+(-3.7)

2. -2.1 - 5.9 - 3.7 = -11.7

I Hoped I Helped!


You might be interested in
Help me please show your work,Thanks
nasty-shy [4]
It says 20% OFF, so you would do, 1 - 0.20 = 0.80, so you would multiply 0.80 with 80 and get 64.
5 0
3 years ago
Rachel's penny banks is 1/2 full. After she adds 200 pennies, it is 5/6 full. how many pennies can Rachel's bank hold?
Anna71 [15]
Her bank can hold 240 pennies.
8 0
3 years ago
What is the common ratio, r, for the sequence represented by the formula a∨n= 3(2)ˆ-n
fgiga [73]
\bf n^{th}\textit{ term of a geometric sequence}\\\\&#10;a_n=a_1\cdot r^{n-1}\qquad &#10;\begin{cases}&#10;n=n^{th}\ term\\&#10;a_1=\textit{first term's value}\\&#10;r=\textit{common ratio}&#10;\end{cases}\\\\&#10;-------------------------------\\\\&#10;a_n=3(2)^{-n}\implies a_n=3(2^{-1})n\implies a_n=3\left( \stackrel{r}{\cfrac{1}{2}} \right)^n
6 0
4 years ago
What’s the element?
FromTheMoon [43]

Explanations and Steps:

How to find the elements:

*Take every element (either one capital letter OR two letters with the first capital and second lowercase)

*Reference the periodic table to find the element name

The number of reactants:

*Reactants are on the left side, what there is before the reaction

*Each reactant is separated by the + sign

*They may be more than one element

The number of products:

*Products are on the right side, what there is after the reaction

*Each product is separated with the + sign

*They may be more than one element

Is it balanced:

Count the number of each element on both sides. It is balanced if both sides have the same number of every element.

*Write out each of the element symbols for each side

*Remember the multiply subscripts (little numbers) by coefficients (big numbers)

Answers:

<u>6.</u>

The elements are:

H - hydrogen

Cl - chlorine

Ca - calcium

O - oxygen

# of reactants: 2

# of products: 2

Is it balanced?

Reactants:

H 4

Cl 2

Ca 1

O 2

Products:

H 2

Cl 2

Ca 1

O 1

It's not balanced because H and O have different numbers of atoms in the reactants and products.

<u>7.</u>

The elements are:

K - potassium

Cl - chlorine

O - oxygen

# of reactants: 1

# of products: 2

Is it balanced?

Reactants:

K 1

Cl 1

O 3

Products:

K 1

Cl 1

O 2

It's not balanced because there are three oxygen atoms for reactants but only two oxygen atoms in the product.

<u>8.</u>

The elements are:

K - potassium

P - phosphorus

O - oxygen

H - hydrogen

Cl - chlorine

# of reactants: 2

# of products: 2

Is it balanced?

Reactants:

K 3

P 1

O 4

H 1

Cl 1

Products:

K 3

P 1

O 4

H 3

Cl 3

It's not balanced because H and Cl have different numbers of atoms.

<u>9.</u>

The elements are:

S - sulphur

O - oxygen

# of reactants: 2

# of products: 1

Is it balanced?

Reactants:

S 2

O 6

Products:

S 2

O 6

It's balanced because both sides have 2 sulphur atoms and six oxygen atoms.

<u>10.</u>

The elements are:

K - potassium

I - iodine

Pb - lead

N - nitrogen

O - oxygen

# of reactants: 2

# of products: 2

Is it balanced?

Reactants:

K 2

I 2

Pb 1

N 2

O 6

Products:

K 1

I 2

Pb 1

N 1

O 3

It's not balanced because K, N and O have different numbers of atoms.

4 0
4 years ago
1. In the following problems, click on all of the significant digits to highlight them.Item 2a) Highlight all of the significant
xenn [34]

Significant digits are those of a number that are meaningful in terms of accuracy or precision. They include: Any non-zero digit; zeros between non-zero digits and trailing zeros only wen thre is a decimal point.

<h2>In the given number 13,400; the significant digits are: 1 3 4</h2>
4 0
1 year ago
Other questions:
  • Help please!!!! Giving out brainliest :((( help me ASAP!!! Thank youu :)
    8·1 answer
  • Factorise x^2 + 3x -40
    15·1 answer
  • A special deck of cards has ten cards. Four are green, three are blue, and three are red. When a card is picked, its color of it
    7·1 answer
  • How many cups of sorbet are used in. 8 cups of punch sorbet is 15%
    8·2 answers
  • . Kathy has 12 pens.<br>She has 4 more than<br>James. How many<br>does James have?​
    13·2 answers
  • -4j-1-5j+6= pls help me
    14·2 answers
  • Next part of it.....​
    13·2 answers
  • Someone please help me with this it's a retake question!
    6·1 answer
  • Pls help this is a test <br><br> Find the difference
    6·2 answers
  • (-5x2 – 43 – 1) +(-4x2 – 4x)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!