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Degger [83]
3 years ago
15

Plz answer right i need it for a quiz

Mathematics
1 answer:
lisov135 [29]3 years ago
3 0

Answer:

a

Step-by-step explanation:

that is the answer

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Let f(x)=x^2 and g(x)=x-3. evaluate (fog)(-2)
Studentka2010 [4]
F(x) = x²
g(x) = x - 3

g(-2) = (-2) - 3 = -5

f(-5) = (-5)² = 25

Answer : <span>(fog)(-2) = 25</span>
7 0
3 years ago
At a local preschool, there is a ratio of 3 boys to every 4 girls. If there are 245 total preschoolers enrolled, then how many a
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Set up the equation by writing the number of students in the ratio as a fraction:

3/4= (245-x)/x Cross multiply:

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3x= 980-4x Add 4x on both sides:

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3 years ago
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Arte these examples of commutative, Associative or Distributive property?I
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Answer:

both these equations are the examples of associative property.

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#2 is the example of associative property with respect to addition.

8 0
3 years ago
In which quadrant or on which axis each of the following points lie.
AlekseyPX

Answer:

(-3,5) Quad 2

(4,-1) Quad 4

(2,0) Positive X axis

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Step-by-step explanation:

3 0
3 years ago
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the length of the shadow of a pole on level ground increases by 90m when the angle of elevation of the sun changes from 58 degre
Anarel [89]

Answer:

The height of the pole is 167 m

Step-by-step explanation:

The given parameters are;

Increase  in the length of the shadow = 90 m

Initial angle of elevation of the Sun = 58°

Final angle of elevation of the Sun = 36°

We have a triangle formed by the change in the length of the shadow and the rays from the two angle of elevation to the top of the pole giving an angle 22° opposite to the increase  in the length of the shadow  

We have by sin rule;

90/(sin (22°)  = (Initial ray from the top of the pole to the end of the shadow's length)/(sin(122°)

Let the initial ray from the top of the pole to the end of the shadow's length = l₁

90/(sin (22°)  = l₁/(sin(122°)

l₁ = 90/(sin (22°) ×(sin(122°) = 283.3 m

Therefore;

The height of the pole = 283.3 m × sin(36°) = 166.52 m

The height of the pole= 167 m to three significant figures.

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3 years ago
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