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Ann [662]
3 years ago
5

Please help ASAP!! 28 points!!

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
8 0
Its the first one A................
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What is the area of a rectangle that is 3 1/2 x 6 1/2 ?
stiv31 [10]
3  1/2  *    6  1/2

3  1/2  to improper fraction =    (3*2 + 1) / 2 = 7/2

6  1/2  to improper fraction =    (6*2 + 1) / 2 = 13/2

3  1/2  *    6  1/2  =  7/2  * 13 /2 =  91 / 4

91 / 4

= 22    3 /4           square unit
8 0
4 years ago
Thirty students bought pennants for the football game. Plain pennants cost $4 each and fancy ones cost $8 each. If the total bil
sammy [17]

Answer:

number o students bought pennants = 18

 number of student bought fancy ones=12

Step-by-step explanation:

Let x be the number o students bought pennants

and y be the number of student bought fancy ones

total 30 students

x+y= 30

y=30-x

Plain pennants cost $4 each and fancy ones cost $8 each.

4x+8y=168

Substitute 30-x for y in second equation

4x+8(30-x)=168

4x+240-8x=168

240-4x=168

Subtract 240 from both sides

-4x=-72

divide both sides by -4

x=18

y=30-x

y=30-18= 12

number o students bought pennants = 18

 number of student bought fancy ones=12

6 0
4 years ago
Please help so i can come out of the basement loll
Ber [7]

Answer:

(9,9)

Step-by-step explanation:

All you have to do is look down and across to the numbers. If you need help with the x and y here it is (x,y)

here is a trick to remember it "run x before you fly to y "

4 0
3 years ago
Read 2 more answers
The one-to-one functions g and h are defined as follows.
Ad libitum [116K]

Answer:

Step-by-step explanation:

The one-to-one functions g and h are defined as follows.

g={(-7,-6), (-5,4), (4,-7)(7,6)}

h(x)= 3x-14

Find the following.

g-1(4)=

"g-1(4)" just says "Find the pair of coordinates that has 4 for its

y-coordinate, and the answer is its x-coordinate".  So we look through those

and find (-5,4) is the only one of those up there that has a 4 for it's y-

coordinate, and so its x-coordinate is -5 and we write:

g-1(4)=-5  

8 0
3 years ago
Use the formula a^2-b^2= (a+b)(a-b) to factor completely. What are the factors of 36x^8-49 ?
Lady bird [3.3K]

Answer:

(6x^4-7)(6x^4+7)

Step-by-step explanation:

36x^8-49

1. look for a gcf. since there isn't one, you move on to the next step.

2. what multiplies to what you need. you can do box method or diamond method.

3. (6x^4-7)(6x^4+7)

6 0
3 years ago
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