All categories

3 years ago

Help me please!!!!!

Mathematics

1 answer:

kow [346]3 years ago

4 0

Answer:

A & B

Explanation:

A:
x = -x + x + 0 + x
x = 0 + x
x = x

B:
x = 0 + (x + 0)
x = x + 0
x = x

You might be interested in

A function f is given by the formula f(x)=a⋅ekx for constants a and k. we also know that f(4)=12 and f(7)=5. find numerical valu

masha68 [24]

The given function is

$f(x) = a e^{kx}$

And it is given that $f(4)=12$

On using this information, we will get

$12 = a e^{4k}$

And the other point is $f(7)=5$

Using this point, we will get

$5= ae^{7k}$

Dividing both equations, we will get

$\frac{12}{5} = e^{4k-7k}$

Taking ln to both sides

$ln( \frac{12}{5} ) = -3k$

$k = -0.29$

Performing back substitution ,

$12 = a e^{-0.29*4}
\\
a =38.28$

3 0

4 years ago

Please help (look at the picture)

cupoosta [38]

1st is not a function
2nd is a function
3rd is a function
4th not a function
5th is a function

3 0

3 years ago

Hat function is represented by a line with slope −2 that passes through the point (0, 4)?

Gre4nikov [31]

Answer:

Step-by-step explanation:

You can use the formula y=mx+b

f(x) is the same as y

m=slope

b=y intercept

We know that the slope is -2 so which answer has -2 as b? (Which one has a -2 before the x?)

Y Intercept is where the line crosses though the y axis. The point of the y intercept will ALWAYS have 0 as x. So (0,4) is the y intercept. You could also say 4 is the y intercept. Which one has 4 as b? (Which one says +4 after -2x)

The only answer that matches is C.

I hope thay made sense.

5 0

3 years ago

I will afford my gratefulness to you in an appropriate manner if you happen to answer these questions correctly.

Mariana [72]

1. The whole numbers are the counting numbers starting at zero.

2. The natural numbers are the counting numbers starting at one.

These are just the definitions that are usually used. Some authors count zero as a natural number.

5 0

3 years ago

Solve the proportion below. 7/x=19

alexgriva [62]

Answer:

The value of x is approximately 0.3684.

Step-by-step explanation:

Given:

$\frac{7}x}=19$

We need to solve the proportion.

Solution:

Now we can see that;

In given equation one number is fraction and other number is whole number.

Now To make whole number into fraction we will divide by 1.

hence the whole number will be equal to;

$19=\frac{19}{1}$

Now the new equation will be;

$\frac{7}{x}=\frac{19}{1}$

Now by cross multiplication we get;

$7\times1=19\times x\\\\7=19x$

Now dividing both side by 19 we get;

$\frac{7}{19}=\frac{19x}{19}\\\\x\approx0.3684$

Hence the value of x is approximately 0.3684.

6 0

4 years ago