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
Jet001 [13]
3 years ago
5

Will mark as brainliest

Mathematics
1 answer:
lapo4ka [179]3 years ago
8 0

Answer:

-1 + 2 = 1

1 + (-2) = -1

-1 - 2 = -3

1 - (-2) = 3

Step-by-step explanation

When you subtract use keep change change

Rule 1 when you add : If the signs are the same add the numbers and take the sign of the bigger number.

Rule 2 when you add : If the signs are different subtract the numbers and take the sign of the bigger number.

I wanted to help you understand and i hope i did that!

You might be interested in
A concrete mix is designed to withstand 3000 pounds per square inch​ (psi) of pressure. The following data represent the strengt
ss7ja [257]

Answer:

Mean = 3640

Mode = 4100

Median = 3830.

Step-by-step explanation:

We are given the following data in the question:

Strength of casts (in psi):

3970,4100,3100,3200,2950,3830,4100,4050,3460

Formula:

Mean = \displaystyle\frac{\text{Sum of all observation}}{\text{Total number of observations}}

\displaystyle\frac{3970+4100+3100+ 3200+ 2950+ 3830+4100+ 4050+ 3460}{9} = \displaystyle\frac{32760} {9} = 3640

Mode is the entry with most frequency. Thus, for the given sample mode = 4100.

Median

Since n = 9 is odd,

Formula:

Median = \displaystyle\frac{n+1}{2}th~term

Data in ascending order:

2950,3100,3200,3460,3830,3970,4050,4100,4100

Median = 5th term = 3830.

7 0
3 years ago
1. Find the sum of the measures of the interior angles of a convex hexagon.
butalik [34]

Answer:

could you include a pic please?

7 0
3 years ago
Read 2 more answers
This graph shows a proportional relationship. (2/3, 3/4)
zhannawk [14.2K]

Answer: Hi! I'd love to help you but I'd need to see the graph.

Step-by-step explanation: Can you add a picture?

5 0
2 years ago
Which phrase best describes the translation from the graph y = 2(x - 15)2 + 3 to the graph of y = 2(x - 11)2 + 3?
ivolga24 [154]

Answer:

4 units to the left

Step-by-step explanation:

y = a (x - h)² + k

The h is a horizontal translation of <em>h</em> units.

For h > 0, move right

For h < 0, move left

8 0
3 years ago
The package of a particular brand of rubber band says that the bands can hold a weight of 7 lbs. Suppose that we suspect this mi
zzz [600]

Answer:

False this value is very likely to find in this distribution

Step-by-step explanation:

With mean 7 ( μ ) and standad deviation  (σ ) 2 we can observe, value 6.6  is close to the lower limit of the interval

μ  ± 0,5 σ      7 ± 1 in which we should find 68,3 % of all values

(just 6 tenth to the left)

And of course 6.6 is inside the interval

μ  ± 1 σ   where we find 95.7 % of th value

We conclude this value is not unlikely at all

4 0
3 years ago
Other questions:
  • Your new place needs a 12 ft by 18 ft rug. You notice that these sides are 50% longer than the rug from your old place. What wer
    13·1 answer
  • PLEASE HELP SUPER EASY!!!
    13·1 answer
  • Find the area of ths-figure
    7·1 answer
  • Use the properties of equality to simplify the equation. Tell whether the final equation is a true: x+1=14x - 20 Step 1 out of 4
    5·1 answer
  • Which term best describes the geometric figure?
    14·2 answers
  • Help please due today
    11·2 answers
  • The Vatican has to be guarded 24 hours a day. Fifteen Swiss Guards are ordered to split each day's guard duty equally. How long
    15·1 answer
  • 11
    13·1 answer
  • The graph it linked here, please help.
    7·1 answer
  • If A=30° and B=60°,show that sinc(A+B)= sinA . cos60°.sin 30°​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!