All categories

4 years ago

What is the value of f (x) = 1/2 x + 5 when x=4

Mathematics

2 answers:

Anna35 [415]4 years ago

7 0

Replace all values of x as 4

f(4)=1/2(4)+5
f(4)=4/2+5
f(4)=2+5
f(4)=7

Hope I helped :)

sammy [17]4 years ago

7 0

(1/2)(4) + 5
2 + 5
7
f(x) = 7

You might be interested in

PLEASE HEEEELPPPP ASAP

skelet666 [1.2K]

Answer:

The solution of the first image is: b = √48

The solution of the second image is: c = √125

Step-by-step explanation:

Here we have two triangle rectangles, first, we need to remember the Pythagorean theorem.

For a triangle rectangle with cathetus A and B, and a hypotenuse H, we have the relationship:

A^2 + B^2 = H^2

Where H is the side that is opposite to the right angle (the angle of 90°)

In the first image, we can see that the hypotenuse is equal to 8, and one cathetus is equal to 4.

We want to find the value of b, that is the other cathetus.

Then we have:

4^2 + b^2 = 8^2

b^2 = 8^2 - 4^2

b^2 = 48

b = √48

Second image:

in this case, c is the hypotenuse, a and b are the cathetus.

We know that:

a = 5, b = 10

Then we have the equation:

a^2 + b^2 = c^2

Now we can replace the above values:

5^2 + 10^2 = c^2

25 + 100 = c^2

125 = c^2

√125 = c

5 0

3 years ago

How do i convert a number to a scientific notation

Ede4ka [16]

Answer:

You write the non-zero digits, placing a decimal after the first non-zero digit. Then, you count the number of digits you need to move the beginning decimal to get to where your decimal is now. If you move the decimal to the left, then your power is positive.

Step-by-step explanation:

so for example, .005 would be 5x10^-2 and 500 would be 5x10^2

4 0

3 years ago

Consider the first order differential equation

MAXImum [283]

Idk but haha hello why not but why

5 0

3 years ago

Heidi, a jewelry salesperson, earns a commission of $55 every time she sells a diamond ring. How many rings does she have to sel

Rashid [163]

Hi Alyssasmith21!
So $55 for each diamond ring and wants to know how many she needs to sell to get $605. OK this is easy what we have to do is 605/55 to find how many rings which is 11. She needs to sell 11 rings to get $605.
Hope this helps!

3 0

3 years ago

Suppose that a random sample of size 25 is to be selected from a population with mean 41 and standard deviation 9. What is the a

lorasvet [3.4K]

Answer:

The probability that X will be more than 0.5 away fro the population

mean is 0.7812 ⇒ answer a

Step-by-step explanation:

* Let us explain how to solve the problem

- The sample size n is 25

- The mean of the population μ is 41

- The standard deviation σ is 9

- We need to find the approximate probability that X will be more than

0.5 away from the population mean

∵ z-score = (X - μ)/(σ/√n)

∵ X - μ = 0.5

- That means X > 41 + 0.5, OR X < 41 - 0.5

- Then we need to find P(X > 41.5) and P(X < 40.5)

∵ z = $\frac{41.5-41}{\frac{9}{\sqrt{25}}}$ = 0.2778

∵ z = $\frac{40.5-41}{\frac{9}{\sqrt{25}}}$ = -0.2778

- Let us use the normal distribution table to find the corresponding

area to z-score

∵ P(z < 0.2778) = 0.6116

∵ P(z > -0.2778) = 0.3928

- P(40.5 < X < 41.5) = P( -0.2778 < z < 0.2778)

∴ The probability of X to be with in 0.5 = 0.6116 - 0.3928

∴ The probability of X to be with in 0.5 = 0.2188

∵ The probability of X to be more than 0.5 away from the population

mean = 1 - 0.2188

∴ P(X > 41.5) OR P(X < 40.5) = 0.7812

* The probability that X will be more than 0.5 away fro the population

mean is 0.7812

8 0

3 years ago