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Snowcat [4.5K]
3 years ago
13

I don’t get the second question.

Mathematics
1 answer:
Bess [88]3 years ago
8 0
<h2>Good morning,</h2>

<em><u>Answer</u></em>:

The quadratic equation is :  x²+x+1=0

<u><em>Step-by-step explanation:</em></u>

Generally:

let S be the sum of the roots z₁ and z₂

and P be the product of the roots z₁ and z₂

then z₁ and z₂ are the solutions for the equation:  x² − Sx + P = 0

Now,

S=-1 and P=1 then the equation is x²+x+1=0.

______

:)

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alekssr [168]
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Cant help you for number 2 though. Hope this helps :)
8 0
3 years ago
Read 2 more answers
What is the equation of the line passing through ( -5, -3 ) and perpendicular
Artist 52 [7]

Answer:

y = 7/5x + 4

Step-by-step explanation:

use the slope from the equation -5/7 and take the negative reciprocal to get the perpendicular slope = 7/5. Then use the equation y=mx+b. Plug in x and y from the point given and the new slope and solve for b.

(-3) = (7/5)(-5) + b, (-3) = -7 + b, add 7 to both sides. b = 4. Rewrite the equation now to be y = 7/5x + 4

4 0
3 years ago
A model car has a scale of 1:25. The length of the model when built is 9.6 in. What is the length of the actual car?
madreJ [45]
The length of the actual car is 240 inches 

1/25 = 9.6/x
25x9.6/1=240
x=240 inches

Hope this helped you! :D
6 0
4 years ago
A 16-foot ladder is leaning against a building at a 71 degree angle to the ground.
Llana [10]

Answer:

The answer to your question is the letter D.

Step-by-step explanation:

Data

length = 16 ft

angle = 71°

Opposite side = ?

Process

1.- To answer this question use trigonometric functions.

The trigonometric function that relates the Opposite side and the hypotenuse is sine.

2.- Write the trigonometric function

      sin Ф = Opposite side / hypotenuse

3.- Substitution and result

      sin (71) = x / 16

5 0
3 years ago
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Which expression is equivalent to (2to the third power) times -5?
Airida [17]

2 to the third power is 2³

so 2 to the third power times -5 is 2³ * (-5)

which on simplification will be 8* (-5) =-40

3 0
3 years ago
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