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Eddi Din [679]
2 years ago
6

Will give point to first correct answer!!

Mathematics
1 answer:
neonofarm [45]2 years ago
3 0

Answer:

f(x) = 3(0.2)^x

Step-by-step explanation:

The leading coefficient is 3 as  x = 0 gives f(x) = 3.

When x = 1, f(x) = 0.6. so try :

0.6 =3(1.2)^1 = 3.6 so it's not the fiirst choice.

0.6 = 3(0.2)^1 = 0.6 so its last choice.

Check when x = -1:

3(0.2)^-1

= 3/ 0.2

= 15

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What is the measure of A
Rainbow [258]

Given:

A figure of a triangle.

To find:

The measure of angle A.

Solution:

Label the points in the figure as shown below.

In the below figure,

\angle ACB\cong \angle DCE            (Vertically opposite angles)

m\angle ACB=m\angle DCE              (Congregant angles)

m\angle ACB=8x+4

Using exterior angle theorem in triangle ABC, we get

m\angle A+m\angle C=\text{Exterior }m\angle B

m\angle BAC+m\angle ACB=130^\circ

(3x-6)+(8x+4)=130^\circ

11x-2=130^\circ

Isolate the variable term x.

11x=130^\circ+2

11x=132^\circ

x=\dfrac{132^\circ}{11}

x=12^\circ

Now, the measure of angle A is:

m\angle A=3x-6

m\angle A=3(12^\circ)-6

m\angle A=36^\circ-6

m\angle A=30^\circ

Therefore, the correct option is B.

3 0
3 years ago
Help quick
ipn [44]
2(x-2)(x+3) you have to factor
8 0
3 years ago
if f(x)=2^x -10 and the domain of f(x) is the set of integers from -1 to 3, which values are elements of the range of f (x)? Sel
nikitadnepr [17]
The domain of the function is the range of values of x that can be used to be replaced in the equation for it to become true. We are given that the value of f(x) should range only from -1 to 3. We evaluate each of the choices and see if the values of f(x) will fall within the range.

(a) -12;   f(x) = 2^(-12) - 10 = -9.9999 (NOT AN ANSWER)
(b) -10;   f(x) = 2^(-10) - 10 = -9.999 (NOT AN ANSWER)
(c) -9;     f(x) = 2^(-9) - 10 = -9.999 (NOT AN ANSWER)
(d) -6;     f(x) = 2^(-6) - 10 = -9.98 (NOT AN ANSWER) 
(e) -2;      f(x) = 2^(-2) - 10 = -9.75 (NOT AN ANSWER)

Hence, none of the choices will allow the value of f(x) to fall between -1 and 3. 
5 0
3 years ago
Read 2 more answers
3x^2 (x^2 - 4x - 2) + (5x^3 + 7x^2+2x+11) plz show work
matrenka [14]

Let's simplify step-by-step.

3x2(x2−4x−4)+5x3+7x2+2x+11

Distribute:

=(3x2)(x2)+(3x2)(−4x)+(3x2)(−4)+5x3+7x2+2x+11

=3x4+−12x3+−12x2+5x3+7x2+2x+11

Combine Like Terms:

=3x4+−12x3+−12x2+5x3+7x2+2x+11

=(3x4)+(−12x3+5x3)+(−12x2+7x2)+(2x)+(11)

=3x4+−7x3+−5x2+2x+11

Answer:

=3x4−7x3−5x2+2x+11

<span> </span>

5 0
3 years ago
Solve the following inequality: -20 &lt; 4 - 2x<br> A. 8 &gt;x<br> B. 8 C. 12 &gt; x<br> D. 12
Mama L [17]

Answer:

-20 < 4 - 2x (subtract 4 from both sides)

-24 < -2x (divide each side by -2)

12> x  (when you divide by a negative number, the inequality flips)

x< 12 ( I always put it so x is first)

so the answer is C

6 0
3 years ago
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