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andreev551 [17]
3 years ago
5

Given the relation y = –4x2 – 8, if the input is 2, what is the output? 8 –8 –16 –24

Mathematics
1 answer:
Pani-rosa [81]3 years ago
3 0
Y = -4x² - 8
y = -4(2)² - 8
y = -4(4) - 8
y = -16 - 8
y = -24

The output is -24.
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Its really urgent. I need help with the first question.
RUDIKE [14]
This kind of exercise can be real drudgery.  But it's almost all simple arithmetic, so better you than me.  I'll do one of these for you, which will show you how to do the other one.

a).  sin · cot / sec

You're supposed to know that [ cotangent = cosine/sine ]
and [ secant = 1/cosine ].

Then the problem becomes

         sin · (cos/sin) / (1/cos)  =  cos²

Aw shucks, I might as well also set up 'b)' for you:

b).  cos · csc / tan

You're supposed to know that [ cosecant = 1/sine ]
and  [ tangent = sine/cosine ].

Then the problem becomes

             cos · (1/sin) / (sin/cos)  =  (cos/sin)²

Now simply plug in the given values of cos A and sin A .


And may I compliment you on your nail care !
7 0
3 years ago
¿se puede hacer un triangulo con las siguientes medidas:2cm ,3cm ,10cm? ayudenme es para mañana
dezoksy [38]

Não, não podemos fazer um triângulo com os comprimentos dos lados de 2 cm, 3 cm e 10 cm. Isso ocorre porque a soma de 2+3 < 10. (in english: No, we cannot make a triangle with the side lengths of measurement 2 cm, 3 cm, and 10 cm. This is because sum of 2+3 < 10).

<h3>What is triangle inequality theorem?</h3>

Triangle inequality theorem of a triangle says that the sum of any of the two sides of a triangle is always greater than the third side.

Suppose a, b and c are the three sides of a triangle. Thus according to this theorem,

(a+b) > c\\(b+c) > a\\(c+a) > b

Now, for this case, the sides given are:

  • a =2 cm,
  • b = 3 cm,
  • and c = 10 cm

But we see that:

a+ b = 5 cm which is < c which is of 10 cm.

Thus, these lengths don't satisfy the triangle inequality theorem, and therefore, cannot be sides of any triangle.

Learn more about triangle inequality theorem here:

brainly.com/question/342881

#SPJ1

3 0
3 years ago
Rearrange y=4-3x/x-5 to make x the subject
lord [1]

Answer:

x = \frac{4+5y}{y+3}

Step-by-step explanation:

Given

y = \frac{4-3x}{x-5} ( multiply both sides by x - 5

y(x - 5) = 4 - 3x ( distribute left side )

xy - 5y = 4 - 3x ( add 3x to both sides )

xy + 3x - 5y = 4 ( add 5y to both sides )

xy + 3x = 4 + 5y ← factor out x from each term on the left side

x(y + 3) = 4 + 5y ← divide both sides by y + 3

x = \frac{4+5y}{y+3}

4 0
3 years ago
Positive numbers must have the positive sign (+) in front of them.<br><br><br> True False
torisob [31]
No
A number that doesn’t have any sign in front of it is naturally considered as positive.
But, negative numbers should have a negative sign in front of them though.
3 0
4 years ago
Read 2 more answers
What’s the fourth question about the big wheel please help
Lapatulllka [165]

Answer:  62.83 m

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

The distance of one rotation is the perimeter of the wheel <em>(which is called "circumference" since it is in the shape of a circle)</em>

Circumference (C) = 2 π · radius (r)

C = 2π (10)

  = 20π

  ≈ 62.83

7 0
3 years ago
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