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Paladinen [302]
2 years ago
11

Help me pleasee 30 points

Mathematics
2 answers:
Ne4ueva [31]2 years ago
7 0

Answer:

24

Step-by-step explanation:

We are supposed to replace 'x' with '3' and then evaluate.

==========================================

8x;  x = 3\\\rule{150}{0.5}\\8(3)\\\\8 \times 3\\\\\boxed{24}

==========================================

<em>Hope this helps! </em>

Inessa05 [86]2 years ago
6 0

Answer:

24

Step-by-step explanation:

8*3=24

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If a(x) = 3x + 1 and b (x) = square root of x-4, what is the domain of (b o a)(x)
Monica [59]

( 1, ∞)  is the domain of (b o a)(x)

<h3>What is Function?</h3>

A function is defined as a relation between a set of inputs having one output each.

According to the question,

a(x) = 3x + 1 \\\\b (x) =\sqrt{x+4}

To find the domain of the composite function,

(b o x) (x) = b(a(x))\\\\(b o x) (x) = b(a(3x-1))\\\\(b o x) (x) = \sqrt{3x+ 1 -4} \\\\(b o x) (x) = \sqrt{3x -3}\\\\

Therefore,

3x - 3 \geq 0\\3x \geq 3\\x \geq 1\\\\

Hence , [ 1, ∞ ] is is the domain of (b o a)(x).

learn more about function here:brainly.com/question/12431044

#SPJ1

8 0
2 years ago
Find the equation of the line passing through the coordinates ( 1 , 8) and ( 3, 18).
SOVA2 [1]

Answer:

y = 5x + 3

Step-by-step explanation:

First we need to find the slope.

The equation to find the slope is m = y2 - y1/x2 - x1  -----> (x1 and x2 just mean the x coordinate for the 2 points, so basically in this case, x1 would be 1 and x2 would be 3. Same for y1 and y2, just the y coordination of each point. y1 = 8 and y2 = 18)

m = 18 - 8/ 3 - 1

m = 10/2

m = 5

The slope would be 2 or 2/1. If you have a fraction that does not divide evenly, such as 3/5, DO NOT simplify unless specified.

Now that we have the slope, we can put this into point-slope form. The formula for this form is:

y - y1 = m(x - x1)

For this you would have to choose one of your points.

I'm going to choose the first one.

y - 8 = 5(x - 1) ----> Always remember in this formula the "m" is the slope, and we previously found out that it was 2, so plug 2 into m

From here just do basic multiplication and addition/subtraction.

y - 8 = 5x - 5

  +8          +8

y = 5x + 3

To test to see if these go through your points, plug the 2 points and equation into a website called desmos. (Very good site, and if your teacher has not recommend it, I highly advise using it. )

4 0
3 years ago
What is the distance between point A and point B?
finlep [7]

Answer:

81

Step-by-step explanation:

7 0
3 years ago
Translate into algebraic expression:
Sauron [17]

Answer:

The numbers of toys per hour is 60c/m toys

Step-by-step explanation:

* Lets explain how to solve the problem

- an algebraic expression is an expression formed from integer

 constants, variables, and the algebraic operations like addition,

  subtraction, multiplication, division

- Ex: 5x² − 7xy + a is an algebraic expression

* Lets solve the problem

- Kevin makes c toys in m minutes

∴ His rate is c/m toy per minute

- To find the number of toys in one hour multiply his rate by the time

  in minutes

∵ In one hour there are 60 minutes

∵ His rate = c/m (toy/minute)

∵ The time is 60 minutes

∴ The number of toys = c/m × 60 = 60c/m toys

∴ The numbers of toys per hour is 60c/m toys

6 0
3 years ago
8(x+7)=7(x-7) please solve due tonight.
avanturin [10]

Answer:

x = -105

Step-by-step explanation:

8(x+7)=7(x-7)\\\\8x+56=7x-49\\\\8x+56-56=7x-49-56\\\\8x=7x-105\\\\8x-7x=7x-7x-105\\\\\boxed{x=-105}

Hope this helps.

4 0
3 years ago
Read 2 more answers
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