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Nikitich [7]
2 years ago
8

(x + 1)(x - 1) I dont understand this could any1 help me

Mathematics
2 answers:
Lana71 [14]2 years ago
7 0

Step-by-step explanation:

It's a factored form of the quadratic equation

{x}^{2}  - 1

in the form of {ax}^{2}  + bx + c

in which a = 1, b = 0, c = 1.

mr_godi [17]2 years ago
5 0

Answer:

x^2-1

Step-by-step explanation:

you must use the distributive property

first you do x•x=x^2,

then you do x•1 and x•-1 to get x and -x and those cancel out,

the you do 1•-1=-1, then you put it together to get x^2-1

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The aspect ratio is used when calculating the aerodynamic efficiency of the wing of a plane. For a standard wing area, the
xxMikexx [17]

Answer:

Y=s^2/36 and y=5.7;14.3 ft

Step-by-step explanation:

The question was not typed correctly. Here, a better version:

<em>The aspect ratio is used when calculating the aerodynamic efficiency of the wing of a plane for a standard wing area, the function A(s)=s^2/36 can be used to find the aspect ratio depending on the wingspan in feet. If one glider has an aspect ratio of 5.7, which system of equations and solution can be used to represent the wingspan of the glider? Round solution to the nearest tenth if necessary.  </em>

<em> </em>

<em>Y=s^2/36 and y=5.7;14.3 ft </em>

<em>Y=5.7s^2 and y=36; s=2.5ft </em>

<em>Y=36s^2 and y=0; s=0.4 ft </em>

<em>Y=s^2/36 +5.7 and y=0; s=5.5 ft</em>

In the function A(s)=s^2/36 A(s) represents the aspect ratio and s the wingspan. If one glider has an aspect ratio of 5.7, then A(s) = 5.7. We want to know the wingspan of the glider. Replacing A(s) by Y we get the following system of equation:

Y=s^2/36    

with y = 5.7

5.7 = s^2/36    

5.7*36 =  s^2

√205.2 = s

14.3 ft

7 0
3 years ago
Read 2 more answers
Two angles that are supplementary are always linear pair true or false?
insens350 [35]
The answer would be True
5 0
3 years ago
What is the probability of choosing a burrito with cheese and a taco or wrap with salsa??
torisob [31]

Step-by-step explanation:

50/50 chance of choosing one or the other because there is only two options

6 0
2 years ago
A flea weighs 8 decigrams, and an ant weighs 3 milligrams. How much more does a flea weigh than an ant?
Tasya [4]
It should be 7.97 decigrams, since you want to convert 3 milligrams to decigrams (0.03), it is asking "How much more" which means you subtract.  8 subtracted from 0.03 is 7.97.

Hope this helps :)

8 0
3 years ago
Read 2 more answers
How do you convert 17 cmon minute to miles an hour
eimsori [14]

Answer:

0.006 miles per hour

Step-by-step explanation:

We are given;

Speed in cm per minute ( 17 cm per min)

We are required to convert cm per minute to miles an hour

we need to know that;

1 miles = 160934 cm

1 hour = 60 minutes

We can convert 17 cm to miles and 1 minute to hours

17 cm = 17 ÷ 160934 cm

          = 17/160934

1 minute = 1/60 hour

Therefore;

In miles per hour;

  = (17/160934) ÷ (1/60)

  = 0.00634 miles per hour

  = 0.006 miles per hour

Therefore, 17 cm per minute is equivalent to 0.006 miles per hour

4 0
3 years ago
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