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STatiana [176]
4 years ago
13

How many numbers lines comprise the basic parts of a Cartesian coordinate system

Mathematics
1 answer:
Colt1911 [192]4 years ago
8 0
Two:  the horizontal axis and the vertical axis.
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1. What is the factored form of 5x2 - 8x – 4?
Lelechka [254]

Answer:

(5x  + 2)  (x -  2 )

Step-by-step explanation:

5x^2 - 8x – 4

(5x   )  (x    )

We need the middle to be -8   and 4 factors into 4*1  and 2*2

5*2 = 10 -2 = 8

(5x   2)  (x   2 )

Now determine the signs

We need -8 so 5*2 must be negative and the 2*1 must be positive

(5x  + 2)  (x -  2 )

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4 years ago
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What are the like terms in 5a + 2 - 7
Blizzard [7]
The like terms are 2 and -7
7 0
3 years ago
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Write 2.028 as a mixed number and simplyed
ratelena [41]
2 20/8 sorry if wrong
5 0
3 years ago
Translate the sentence into an inequality.<br> Nine times b is at least - 18.
nirvana33 [79]

Answer:

9b≥ -18

Step-by-step explanation:

6 0
3 years ago
A rollercoaster ride reaches a height of 80 feet before it sharply drops. The height above the ground of the rollercoaster car d
Tasya [4]

Answer:

Therefore the car takes 2 s to reach a minimum height from the ground before rising again.

Step-by-step explanation:

Given that a roller coaster ride reach a height of 80 feet.

The height above the ground of the roller coaster is modeled by the function

h(t)=10t²-40t+80

where t is measured in second.

h(t)=10t²-40t+80

Differentiating with respect to t

h'(t)= 10(2t)-40

⇒h'(t)=20t-40

To find the minimum height we set h'(t)=0

∴20t-40=0

⇒20t =40

⇒t=2

The height of the roller coaster minimum when t=2 s.

The minimum height of of the roller coaster is

h(2)= 10(2)²-40.2+80

     =40-80+80

     =40 feet.

Therefore the car takes 2 s to reach a minimum height from the ground before rising again.

8 0
3 years ago
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