4 years ago

Consider the function: y=2x+5 What will be the value of the function when x=10?

Mathematics

1 answer:

Katarina [22]4 years ago

5 0

Answer:

y=25

Step-by-step explanation:

10*2=20

20+5=25

You might be interested in

The first five terms of a quadratic sequence are 3, 12, 25, 42, 63.

skad [1K]

Since we know the sequence is quadratic, we expect the $n$ -th term to have the general form

$x_n = an^2 + bn + c$

Plug in the first 3 known values of the sequence to form a system of equations.

$x_1 = 3 = a + b + c$

$x_2 = 12 = 4a + 2b + c$

$x_3 = 25 = 9a + 3b + c$

Eliminating $c$ gives

$(4a + 2b + c) - (a + b + c) = 12 - 3 \implies 3a + b = 9$

$(9a + 3b + c) - (a + b + c) = 25 - 3 \implies 8a + 2b = 22 \implies 4a + b = 11$

Eliminating $b$ gives

$(4a + b) - (3a + b) = 11 - 9 \implies a = 2$

Solving for $b,c$ , we get

$4a + b = 11 \implies b = 11-4\cdot2 = 3$

$a+b+c=3 \implies c=3-2-3 = -2$

So, the $n$ -th term of the sequence is

$x_n = \boxed{2n^2 + 3n - 2}$

7 0

2 years ago

(a+b)(a-b)=? Đây là hằng đẳng thức nào?

allsm [11]

Answer:

không

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Which expression is equal to 3√54−4√24 ? 11√6 √6 −11√6 −√6

romanna [79]

3√54-4√24
9√6-4√24
9√6-8√6
√6

6 0

4 years ago

Which ordered pair is a solution to the inequality? 4x + y > - 6

Luden [163]

your answer is C. plug in -1 for x and Y. 4(-1) + (-1). now add... -5. -5 is greater than -6 which is a ordered pair we needed to make this true

3 0

4 years ago

1. x^2 + 6x + 8 = 0 2. x^2 + 10x + 21 + 0 3. X^2 + 9x + 18 = 0

WARRIOR [948]

Answer:

545256

Step-by-step explanation:

8 0

2 years ago

Consider the function: y=2x+5 ​What will be the value of the function when x=10?

Consider the function: y=2x+5 What will be the value of the function when x=10?