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3 years ago

What shape is 80,100,100,80 degree

1 answer:

5 0

I believe it is a parallelogram.
Reasons:
1. It is a quadrilateral. Quadrilaterals have a total amount of 360 degrees. 80+100+100+80=360
2. It has oposite sides that are equal
3. If you look at a parallelogram it has two obtuse angles and two acute.
100= obtuse angle 80= acute angle

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(20 Points) Perform the indicated operations.

JulijaS [17]

Answer:

5x-8/12y

Step-by-step explanation:

x+1

x−2

−(

x+3 /6y

30xy2−48y2

72y3

30x−48/72y

5x−8 /12y

7 0

3 years ago

Leah wraps the box shown with construction paper. What is the surface area of the pencil case?

baherus [9]

Answer:

48 might be

Step-by-step explanation:

i hope is right

4 0

3 years ago

Need help with question 7 and 8 with awnser please check photo for problems

Tanzania [10]

Answer:

7) 230mm

8) 98m

Step-by-step explanation:

7x+8+6x+6+9x-4 =22x+10

if x is 10 mm, 22(10)+10 =230mm

8) perimeter of rec =2( l + w )

=2 ( 2x-5+2x+6 ) = 8x + 2

if x is 12 metres, 8(12)+2 =98m

7 0

2 years ago

Kevin and Randy Muise have a jar containing 80 coins, all of which are either quarters or nickels. The total value of the coins

SCORPION-xisa [38]

Answer:

39 quarters and 41 nickels

Step-by-step explanation:

Let the number of quarters be x and nickels be y.

Given:

Quarter is 25 cents
Nickel is 5 cents
Number of coins is 80
Total amount is $11.80 = 1180 cents

We have equations:

x + y = 80
25x + 5y = 1180

Solve the system by elimination, subtract 5 times the first equation from the second one:

25x + 5y - 5x - 5y = 1180 - 80*5
20x = 780
x = 780/20
x = 39

Find the value of y:

39 + y = 80
y = 80 - 39y = 41

Verify:

25*39 + 5*41 = 975 + 205 = 1180

7 0

2 years ago

What property -3(m + 8) = -3m - 24

Andrews [41]

Answer:

distributive property of multiplication

Step-by-step explanation:

5 0

2 years ago