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natita [175]
3 years ago
14

What happens when you add and subtract integers

Mathematics
2 answers:
Furkat [3]3 years ago
5 0
When u add it stays the same but for subtraction u change the sign.

Example: 2- (-5)=7
alexgriva [62]3 years ago
3 0
Same signs add and keep(-,-)= -   (+,+)=+
different signs subtract(-,+)= -
take the sigh of the higher number 
then youll be exact
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The width of a rectangle measures (2.5u+9.8)(2.5u+9.8) centimeters, and its length measures (1.5u+3.9)(1.5u+3.9) centimeters. Wh
icang [17]

Solution,

We have,

Width of rectangle, b = (2.5u+9.8) cm

Length of rectangle, l = (1.5u+3.9) cm

We need to find the expression for the perimeter of the rectangle. The formula for the perimeter of a rectangle is given by:

Perimeter = 2(l+b)

P = 2[(2.5u+9.8)+(1.5u+3.9)]

Collecting like terms

P = 2[(2.5u+1.5u)+(9.8+3.9)]

P=2(4u+13.7)

⇒ P = 8u+27.4

So, the expression for the perimeter of the rectangle is (8u+27.4) cm.

3 0
3 years ago
can someone please help me out with this problem ? i been trying to do this for like 2 days now and i still don’t get it .. also
kotykmax [81]

Answer:

Step-by-step explanation:

the Pythagorean theorem is

c is the hypotenuse which is the side opposite of the right angle

plug the numbers into the Pythagorean theorem

x^2+(\sqrt{26})^2=13^2

when squaring a square root, just take the number in the radical and get rid of the radical

x^2+26=169

subtract 26 from both sides

x^2=143

find the square root of 143

143 is prime so it can just be written as

x=\sqrt{143}

6 0
3 years ago
I WILL GIVE BRAINLIEST TO WHOEVER IS CORRECT
tatiyna
The first one is correct
5 0
3 years ago
Explain what the solution to a system of equations is:
WINSTONCH [101]
A solution to a system of equations is a set of values for the variable that satisfy all the equations simultaneously. In order to solve a system of equations, one must find all the sets of values of the variables that constitutes solutions of the system.
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What is the equation in point-slope form for the line parallel to y=6x-3 that contains P(-9,7)
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Answer:

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3 years ago
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