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Bingel [31]
3 years ago
8

Which of these equations represent functions? Check all that apply. A. 3x2 - y2 = 1 B. y = 6x C. y = x2 - 2 D. y2 = x2

Mathematics
2 answers:
Zielflug [23.3K]3 years ago
6 0

Answer:

a and d

Step-by-step explanation:

lara [203]3 years ago
4 0
I'm pretty sure the answer is
<span>B. y = 6x
C. y = x2 - 2</span>
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Will give brainliest if this math question is answered correctly
solniwko [45]

Answer:  37 fruit pies+42 fruit juices=79 total items

(a) 37*1.65= $61.05

    42*1.36= $57.12

(b) Mr Sanchez's class earned more money.

(c) Mr. Sanchez's class earned $3.93 more than Mr. Kelly's class

    $61.05-$57.12= $3.93


Step-by-step explanation:


6 0
3 years ago
Name the property used in: (5 + 2) + n = 7 + n
rjkz [21]
Additive indentity
(5 + 2) + n
n = 1
a variable is always a number itself remember 7+n
5+2 = 7
5 0
3 years ago
A raft and a motorboat simultaneously leave from the same point and move down the river. After 2 hours the motorboat turns aroun
lesya692 [45]

Answer:

2 hours

Step-by-step explanation:

Let x mph be the speed of motorboat in still water and y mph be the speed of current.

A raft and a motorboat simultaneously leave from the same point and move down the river, then speeds down the river are:

        motorboat =  x + y mph

        raft = y mph

In two hours they will cover:

        motorboat = 2(x+y) miles

        raft = 2y miles

After 2 hours the motorboat turns around and starts moving towards the raft (against the current), so its speed is now x - y mph.

Let t be the time they move towards each other. In t hours, they cover

        motorboat = t(x - y) miles

        raft = ty miles

The distance from the starting point to the turning point is the same as the sum of the distances the raft covers and the motorboat covers after turning around, so

2(x+y)=2y+t(x-y)+ty \\ \\2x+2y=2y+tx-ty+ty\\ \\2x=tx\\ \\t=2\ hours

6 0
3 years ago
A rectangle porch is 4 feet wide. It is 3 times long as it is wide
Alexeev081 [22]
Label the width: 4ft
Label the length: 12ft (4ft for each segment).
Perimeter=12+12+4+4=32ft
7 0
3 years ago
Read 2 more answers
Clara has a garden that is 7 feet wide and 4 feet long. she has 30 tomato plants to put in hte graden. each plants need 1 sqaure
Flauer [41]

garden: Area = 7 x 4  = 28

plants:   Area = 1 x 1 x 30 plants = 30

30 - 28 = 2

Answer: 2 plants

7 0
3 years ago
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