2 years ago

Please help me with this please and thank you

Mathematics

1 answer:

sattari [20]2 years ago

6 0

Answer:

b. $3^{-x}$

Step-by-step explanation:

(-2, 9)

$f(-2)=3^{-(-2)} =3^{2} =9$

(-1, 3)

$f(-1)=3^{-(-1)} =3^{1} =3$

(0 1)

$f(0)=3^{0} =1$

Hope this helps

You might be interested in

Explicit formula for an the nth term of the sequence 38,48,58

7nadin3 [17]

Answer:

10n + 28

Step-by-step explanation:

a + d (n-1)

a = 38

d = 10

38 + 10 (n-1)

38 + 10n -10

10n +38 - 10

10n + 28

Hope this helps!

3 0

3 years ago

Find the area of an equilateral triangle with a side of 6 inches

olga55 [171]

Answer:

9√3in^2 hope this helps. found an answer...

5 0

2 years ago

The volume of a box(V) varies directly with its length(l). If a box in the group has a length of 25 inches and k = 15, what is i

Masja [62]

The problem says that V(x) varies directly with its length. This is a proportionality problem. So, V(x) = kl. If you are given a length of 25 inches and a k (proportionality constant) of 15, you are required to find its volume V(x).

V(x) = kl
V(x) = (15) (25 inches)
<u>V(x) = 375 cubic inches</u>
<span>
The volume of the box is 375 cubic inches.

</span>

8 0

2 years ago

used to have a square garage with 296 ft of floor space. recently built an addition to it. The garage is still a square, but no

wel

Answer:

230 ft

Step-by-step explanation:

5 0

3 years ago

Which is the polynomial function of lowest degree with rational real coefficients, a leading coefficient of 3 and roots StartRoo

anastassius [24]

Answer:

$a) f(x)=3x^{3}-6x^{2}-15x+30$

Step-by-step explanation:

1) In this question we've been given "a", the leading coefficient. and two roots:

$x_{1}=\sqrt{5}\:x_{2}=2$

2) There's a theorem, called the Irrational Theorem Root that states:

If one root is in this form $x'=\sqrt{a}+b$ then its conjugate $x''=\sqrt{a}-b$ . is also a root of this polynomial.

Therefore

$x_3=-\sqrt{5}$

3) So, applying this Theorem we can rewrite the equation, by factoring. Remembering that x is the root. Since the question wants it in this expanded form then:

$f(x)=3(x-\sqrt{5})(x+\sqrt{5})(x-2)\Rightarrow 3x^{3}-6x^{2}-15x+30$

4 0

2 years ago

Read 2 more answers