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3 years ago

9- pls help!!!! math -

Mathematics

1 answer:

Andre45 [30]3 years ago

4 0

Answer:

Step-by-step explanation:

7 cuz I did this on my notebook

I hope it helps :)

have a greatday

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Find the value of x in the shown figure

zhannawk [14.2K]

Im not really sure if im right but i think the answer is 140-

Explanation:
I added 30+10 which equalled 40 and then i noticed the circle which would equal 360 and subtracted it from the 40 however that got me more then i needed since it wasnt one of the choices. Then i thought hmm maybe its a supplementary angle which usually equals 180 so i subtracted it from 40 which got me 140! Like i said i dont know if im right or not :(

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3 years ago

If you wanted to figure

inysia [295]

Answer:

solid gemontery

Step-by-step explanation: Plane geomentry is flat and soild is balls sqaures and other types of shapes.

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3 years ago

Can someone give me the answer to this

vredina [299]

You solve this problem via PEMDAS (Parentheses Exponents Multiplication Division Addition Subtraction.)

To start you simplify everything inside parentheses.

9+3*5+5^2

Then you simplify the exponents.

9+3*5+25

Next, you simplify the multiplication signs.

9+15+25

Then you simplify all the addition signs from left to right.

24+25

49

6 0

4 years ago

A-2=-1 + 2a-4-1 send me the work please! (solving equations with variables on both sides)

Vladimir [108]

The value of "a" is 4

Solution:

Given expression is:

$a - 2 = -1 + 2a - 4-1$

The above expression involves variables and constants

A variable is a symbol that represents an unknown number

Here the variable is "a"

Constants are fixed numbers like 1, 2 etc

From given expression:

$a - 2 = -1 + 2a - 4-1$

Move the varibale "2a" from right side to left side of equation

When, 2a is moved from R.H.S to L.H.S, it becomes -2a

$a -2a - 2 = -1 -4-1$

Now move the constant -2 from left side to right side of equation

Similarly, when -2 is moved from L.H.S to R.H.S, it becomes +2

$a-2a = -1-4-1+2$

Now add the variables on left side of equation

$-a = -1-4-1+2$

Now add the constants on right side of equation

$-a = -6+2\\\\-a = -4$

Cancel the negative sign on both sides of equation

$a=4$

Thus the value of "a" is 4

6 0

3 years ago

Simplify (x + 3)(x − 3)

DerKrebs [107]

Answer:

x^2 -9

Step-by-step explanation:

(x + 3)(x − 3)

FOIL

first x*x =x^2

outer -3x

inner 3x

last -3*-3 =-9

Add together

x^2 -3x+3x -9

Combine like terms

x^2 -9

7 0

3 years ago