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
Scorpion4ik [409]
3 years ago
9

An equation was used to predict possible sales of phones for 6 months. The actual sales of phones are also listed. Actual sales

55 150 325 510 780 990 Predicted sales 40 150 300 500 800 1,000. The sum of the residuals is ______.
Mathematics
2 answers:
Ugo [173]3 years ago
8 0
The residue in each case is the difference between actual and predicted sales. Thus:
55 - 40 = 15
150 - 150 = 0
325 - 300 = 25
510 - 500 = 10
800 - 780 = 20
1000 - 990 = 10
These add up to be:
15 + 25+ 10 +20 +10
= 80
Valentin [98]3 years ago
6 0

Answer:

I'm not sure but I think the answer is 20

Step-by-step explanation:

You might be interested in
Lines j and k are parallel how to solve
Ede4ka [16]
I can't answer your question without a picture... Sorry.
7 0
3 years ago
HELP ASAP SOS!!! <br> QUESTION : write a 4 step proof that triangle ABD is congruent to ABD
SCORPION-xisa [38]

Here are a few reasons:

The triangles have the same three sides

The triangles have the same three angles

The triangles could perfect overlap one another

They have corresponding angles.

Not sure if this helped but I hope so!

8 0
3 years ago
When x-y=3 work out the value of y-x
GalinKa [24]

The value of y-x is (-3)

<u>Solution:</u>

Given: The value of x-y=3

To find: The value of y-x

\bold{x-y=3\rightarrow (1)}

Let's multiply the equation (1) by (- 1) on both sides,

\Rightarrow\bold{(x - y)\times(- 1) = 3\times(- 1)}

\Rightarrow\bold{-(x-y)=-3}

On multiplying the sign,

\Rightarrow\bold{(-x+y)=-3}

The above equation can also be written as,

\Rightarrow\bold{y-x=-3\rightarrow \text{(The required equation)}}

<u>Multiplication of signs:</u>

\Rightarrow( + )\times( + ) = ( + )

\Rightarrow( + )\times( - ) = ( - )

\Rightarrow( - )\times( + ) = ( - )

\Rightarrow( - )\times( - ) = ( + )

In simpler terms, when we multiply two integers with the same signs, the result is always positive and when we multiply two integers with different signs, the result is always negative.

5 0
3 years ago
Please help! I’ll mark brainlest :/
mafiozo [28]
B. is the answer if you look closely
6 0
3 years ago
Please help me with this.
ipn [44]

-5yards+-8yards=-13yards

8 0
3 years ago
Other questions:
  • Use a bar model to find the unknown value: 3/6 = ?/7
    15·1 answer
  • During the _____ stage of the problem solving process, you select a course of action.
    7·1 answer
  • Hannah is making bags of. trail mix for hiking club she will use 21 ounces of walnuts 11.1 ounces of almonds and 13.4 ounces of
    10·1 answer
  • Ken can walk 40 dogs in 8 hours how many dogs can ken walk in 12 hours
    12·2 answers
  • The subsets of the real numbers can be represented in a Venn diagram as shown. To which subset of real numbers does −2π belong?
    11·2 answers
  • A polynomial has been factored below, but some constants are missing. 2x^3 –6x^2 –8x=ax(x+b)(x+c) What are the missing values of
    11·2 answers
  • Un grupo de turistas gasta $ 153 para alquilar tubos y aletas. Se alquilan un total de 12 snorkels y 15 pares de aletas. Alquila
    13·1 answer
  • In the equation below, b and c represent the price per pound, in dollars, of beef and chicken, respectively, x weeks after july
    13·1 answer
  • What is the solution to log48x= 3?<br> X=3/8 x=3/2 x=2 x=8
    10·1 answer
  • What would you do with a TV if you are from the past and dont know to do with it
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!