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tresset_1 [31]
2 years ago
6

I got this for my classwork does anyone know how to solve this step by step​

Mathematics
1 answer:
Nataly_w [17]2 years ago
7 0

Answer:

http://www.cssdrive.com/

Step-by-step explanation:

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Which property is illustrated by the following equation?<br> - 10 + 8 = 8 + ( - 10 )
Snowcat [4.5K]
I believe it is commutative property cause the numbers didn't change instead they just switched places in the equation.
4 0
3 years ago
t When you reverse the digitals in a certain number you increase its value by 27. Find the number if the sum fixes digits is 9.
TiliK225 [7]
The number=10x+y
we suggest this system of equations:
(10y+x)-(10x+y)=27
x+y=9                                ⇒x=9-y

Can solve this system of equations by susbstitution method.
(10y+(9-y)-(10(9-y)+y)=27
10y+9-y-(90-10y+y)=27
10y-y+10y-y=27-9+90
18y=108
y=108/18
y=6

x=9-y
x=9-6
x=3

The number=10x+y=10(3)+6=36

Answer: the number is 36.

to check:
63-36=27
6+3=9
3 0
3 years ago
⦁ What is the sum of the measures of the exterior angles in a heptagon? Explain.
Ratling [72]
<span>Your answer would be 360 the sum of the exterior angles of any convex polygon is 360 degrees</span>
6 0
2 years ago
HELP WITH MATH hzjdjdjdjdjd
kolbaska11 [484]

Answer:

0.916

Step-by-step explanation:

Trust me thats all you gotta do.

3 0
2 years ago
Read 2 more answers
George wants to buy pets for each of his 5 grandchildren if he buys 3 pooples and 2 cats he will spend 1200 if he buys 2 poodles
Gre4nikov [31]

Answer:

Each poodle = $300

Each Cat = $150

Step-by-step explanation:

Let number of poodles be P and number of cats be C

"if he buys 3 pooples and 2 cats he will spend 1200" mathematically:

3P + 2C = 1200-------eq 1

"2 poodles and 3 cats he will spend 1050" mathematically:

2P + 3C = 1050 ------eq 2

So now we have a system of 2 equations with 2 unknowns, we'll solve by elimination

eq 1 x 3 : 3 (3P + 2C) = 3  (1200)

9P + 6C = 3600 ------ eq 3

eq 2 x 2: 2(2P + 3C) = 2(1050)

4P + 6C = 2100---------eq 4

By elimination : eq 3 - eq 4

(9P + 6C) - (4P + 6C) = 3600 - 2100

9P - 4P = 1500

5P = 1500

P = 300  (answer)

Substituting back into eq 1

3(300) + 2C = 1200

900 + 2C = 1200

2C = 1200 - 900

2C = 300

C = 150(answer)

8 0
2 years ago
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