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3 years ago

If f(x)=2x^2+3 and g(x)=x-2, what is (f+g)(2)?

Mathematics

2 answers:

BabaBlast [244]3 years ago

4 0

$(f+g)(x)=2x^2+3+x-2=2x^2+x+1\\\\(f+g)(2)=2\cdot2^2+2+1=8+3=11$

GalinKa [24]3 years ago

3 0

Answer:

Step-by-step explanation:

(f+g)(2) means f(2)+g(2).

f(2) means we need to replace the x's in f(x)=2x^2+3 with 2.

This gives us f(2)=2(2)^2+3.

Let's simplify f(2)=2(4)+3=8+3=11.

g(2) means we need to replace the x's in g(x)=x-2 with 2.

This gives us g(2)=2-2

Let's simplify g(2)=0.

Now f(2)+g(2) means we just add the result of f(2) to the result of g(2).

So the problem is what is 11+0?

Answer is 11

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san4es73 [151]

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3 years ago

Ms. Johnston's students counted by fives. The first person said, "Five." The next said, "Ten"; the next "15." They went all the

Tcecarenko [31]

Answer:

20 students.

Step-by-step explanation:

The first person said 5 (which is 5 x 1), the second person said 10 ( which is 5 x2)... we see that this is a arithmetic sequence where the first term is 5 and the nth term is 100. We know that 100 = 5 x 20, therefore, the number of students that counted all the way up to 100 was 20 and Bobby was wrong.

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3 years ago

PLEASE ANSWER ASAP!! e)What is the measure of ∠I? Explain

Zina [86]

Answer:

$60^{\circ}$

Step-by-step explanation:

From the given figure it is clear that the stop board is a regular hexagon and ∠I is an exterior angle of the regular hexagon.

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In a regular hexagon number of sides: n =6

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4 0

3 years ago

B = 10 feet area = 35 feet 2 Find the height of the triangle.

Alexandra [31]

Answer:

Height is 7m

Step-by-step explanation:

B = 10 feet area = 35 feet 2 Find the height of the triangle.

Area of triangle = 1/2 b×h

35 = 1/2(10×h)

35 × 2 = 10h

70 = 10h

h = 70/10

h = 7m

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3 years ago

Solve the inequality: 3/10 is greater than or equal to k - 3/5

Ostrovityanka [42]

To solve the inequality 3/10 is greater than or equal to k - 3/5, we must first set it up. Since 3/10 is greater than or equal to something, we will have a greater than or equal to symbol, with the 'mouth' pointing towards 3/10. Setting this up we get:

3/10 ≥ k - 3/5

Now we want to get k by itself on one side. We can do this by adding 3/5 to each side.

3/10 + 3/5 ≥ k

Simplify

9/10 ≥ k

3 0

3 years ago