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3 years ago

May I get some help on this please?

Mathematics

2 answers:

HACTEHA [7]3 years ago

8 0

Answer:

Step-by-step explanation:

The answer is the second explanation I think

Sliva [168]3 years ago

3 0

Answer:

it's the 2nd answer

Step-by-step explanation:

basically I just found the range and it kinda gave me the answer (range is the difference between the highest and lowest number, so 24-9=15)

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suppose that x and y vary inversely and x=1 when y=12. write a function that models the inverse variation. graph the function an

larisa [96]

Answer:

y=12/x

Step-by-step explanation:

if y=12, and x=1 so

general formula y=12/x

for x=5 , y=12/5=2.4

you can graph by ploting points such as (1,12), (5, 2.4),...

6 0

3 years ago

7. In how many ways can the same 5-question True / False quiz be

goldenfox [79]

Answer:

243 ways

Step-by-step explanation:

Calculating the number of posible outcomes:

We have n trials.

Each trial has m possible outcomes.

The total number of outcomes is:

$T = m^{n}$

In this question:

5 questions, that is, 5 trials, so $n = 5$

Each question has 3 options(True, false or unanswered). So $m = 3$

How many ways?

$T = 3^{5} = 243$

3 0

3 years ago

I need help quickly plz!!!!

natima [27]

Answer:

25:3

Step-by-step explanation:

50 / 6 is simplified to 25 / 3 which would equal 25 : 3.

7 0

3 years ago

Which two activities are examples of data collecting?

Ganezh [65]

Hello!

The 2 activities which represent data collecting are :

A. Graphing the heights of baseball players
C. Asking people what their favorite food is

6 0

2 years ago

Read 2 more answers

Point p(a,b) is in the first quadrant on the graph of the line x+y=4. A triangular region is shown on the diagram. What is the m

Gala2k [10]

Answer:

The maximum area of the triangular region is 2 square units

Step-by-step explanation:

we know that

The area of the triangular region is equal to

$A=\frac{1}{2}(x)(y)$ -----> equation A

where

x is the x-coordinate of point P

y is the y-coordinate of point P

we have

The equation of the graph of the line is

$x+y=4$

$y=-x+4$ -----> equation B

substitute equation B in equation A

$A=\frac{1}{2}(x)(-x+4)$

$A=-\frac{1}{2}x^2+2x$

This is a vertical parabola open downward (the leading coefficient is negative)

The vertex represent a maximum

The y-coordinate of the vertex represent the maximum area of the triangular region

Find the vertex

Convert the quadratic equation in vertex form

Factor -1/2

$A=-\frac{1}{2}(x^2-4x)$

Complete the square

$A=-\frac{1}{2}(x^2-4x+4)+2$

Rewrite as perfect squares

$A=-\frac{1}{2}(x-2)^2+2$

The vertex is the point (2,2)

The maximum area is the y-coordinate of the vertex

The maximum area of the triangular region is 2 square units

Find the coordinates of point P for the maximum area

x=2 (x-coordinate of the vertex)

Find the y-coordinate of point P

substitute in equation B

y=-2+4=2

The coordinates of point P for the maximum area is P(2,2)

3 0

4 years ago