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2 years ago

Interior and Exterior of Triangles

Mathematics

2 answers:

Vika [28.1K]2 years ago

5 0

Top

You say 56+x+50+82=180
Then you add 56 Nd x
Then you add 50 Nd 82
And that would 132
So you say 56x+132=180
Then you bring your railroad tracks
Subtract 132 on both sides
And that would be 48
Bring your 56x down
Then you divide 56 on both sides
And that would be 1.16

vodomira [7]2 years ago

4 0

Answer:

the top one is -8 and the bottom is 11

Step-by-step explanation:

please mark brainliest :))

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Graph the equation x-y=6

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3 years ago

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Step-by-step explanation:

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2 years ago

Find the sum of the following series

vazorg [7]

Answer:

a) 820

b)450

c) -540

d) -294

e) 1440

f) 1425

Step-by-step explanation:

a) it is an arithmetic progression with ratio=4

a1=3,

a2=3+r=3+4=7.....

a20=a1+19r

so a20=3+19*4=3+76=79

S=(a1+an)*n/2 where n=20

so S=(3+79)*20/2=820

b) a15=a1+14*r=2+14*4=2+56=58

S=(a1+a15)*15/2=(2+58)*15/2=60*15/2=30*15=450

It is the same formula for all the exercises

S=(a1+an)*n/2 , where n is the number of terms

c) a40=30+39*(-3)=30-87=-57

So S=(30-57)*40/2=-540

d) a14=5+13*(-4)=5-52=-47

S=(5-47)*14/2=-42*14/2=-42*7=-294

e) it is 5+7+9+......+75

nr of terms = (an-a1) :r+1=(75-5):2+1=36

S=(5+75)*36/2=36*40=1440

f) ratio=7-4=3

the same formula for n= (91-4):3+1=87:3+1=29+1=30

S=(4+91)*30/2=95*30/2=2850/2=1425

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3 years ago

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The result after adding a set of numbers or is called a ___.

german

Answer:

The result after adding a set of numbers or is called a sum.

Step-by-step explanation:

Consider the provided information.

The four mathematical operations are:

$+,-,\times ,\div$

The sign + is used to add numbers.

The sign - is used to subtract the numbers.

The sign × is used for the product of the numbers.

The sign ÷ is used for division of the numbers.

When we add two or more number by using the operator + the obtained number or value is called the sum of the numbers.

For example:

Consider the number: 2 + 5 if we add the number the resulting value will be 7.

The number 7 is the sum of 2 and 5.

Thus, the result after adding a set of numbers is called a sum.

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3 years ago