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Dmitry [639]
2 years ago
12

Helpppppppp will mark brainlest​

Mathematics
1 answer:
Shkiper50 [21]2 years ago
5 0

Answer:

-8

Step-by-step explanation:

what do you think, when you look at the examples given in the problem definition ?

don't you see the pattern, that f(x) = x+2 ?

f(1) = 1+2 = 3

f(2) = 2+2 = 4

f(3) = 3+2 = 5

so, if we follow this assumption, then

f(-10) = -10 + 2 = -8

You might be interested in
7k-2(3k+1)-9 simplifyed
tamaranim1 [39]

Answer:

k= -11

Step-by-step explanation:

Let's simplify step-by-step.

7k−2(3k+1)−9

Distribute:

=7k+(−2)(3k)+(−2)(1)+−9

=7k+−6k+−2+−9

Combine Like Terms:

=7k+−6k+−2+−9

=(7k+−6k)+(−2+−9)

=k + −11

6 0
3 years ago
Please answer this question
Afina-wow [57]

Answer:

The answer is

Step-by-step explanation:

Given: f(x) = 3 + 2x - x²

To compute f(3 + h) substitute x = 3 + h.

Similarly, to compute f(h) simply substitute x = h.

We are asked to compute $ \frac{f(3 + h) - f(h)}{h} $

f(3 + h) = 3 + 2(3 + h) - {(3 + h)²}

           = 3 + 6 + 2h - {9 + 6h + h²}

           = 9 + 2h - 9 - 6h - h²

           = - 4h - h²

Now, f(h) = 3 + 2h - h²

f(3 + h) - f(h) = -4h - h² - 3 - 2h + h²

                    = -6h - 3

$ \therefore \frac{f(3 + h) - f(h)}{h} = \frac{-3(2h + 1)}{h} $ which is the required answer.

6 0
3 years ago
Which of the following subsets of vectors x y z are subspaces of R 3 ?
svet-max [94.6K]

Answer:

Step-by-step explanation:

i dont know but good question!

7 0
3 years ago
Number sequences 2, 12, 72, 432, 2592.... is it arithmetic, geometric, or neither?
abruzzese [7]
It is geometric because it is increasing by a common factor. If you multiply the previous number by 6 you receive the next number. If it were arithmetic you would add the number, not multiply.
6 0
3 years ago
A safety regulation states that the maximum angle of elevation for a rescue ladder is 72°. A fire department's longest ladder is
Julli [10]

Answer:

The maximum safe rescue height is   104.6 feet above the height of  the ground.

Step-by-step explanation:

Consider a triangle ABC where C is the point where the rescue ladder is standing and  AB be the building  and Ladder making an angle of 72° as shown.

We have to find the height of the building.

Let x be the height of building

Using Trigonometric ratio,

\sin C=\frac{\text{Perpendicular}}{\text{Hypotenuse}}

\sin 72^{\circ}=\frac{AB}{BC}

\sin 72^{\circ}=\frac{x}{110}

x=110 \times \sin 72^{\circ}

x=104.6

So, the maximum safe rescue height is   104.6 feet above the height of

the ground.

5 0
3 years ago
Read 2 more answers
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