Ask question

Ask question

All categories

2 years ago

8

Each mobile bags sold by Ravi’s marble company contains 4 purple marbles for every 7 orange marbles if the bag is 56 orange marb

les how many purple marbles does it contain

1 answer:

Allisa [31]2 years ago

4 0

Answer:

56/7 is 8 so 8x4 is 32 is is easy

You might be interested in

You brake your car from a speed of 55 mph, and in doing so, your car's speed decreases by 10 mph every second. The table shows b

pshichka [43]

Answer:

A

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Grace Oatman bought 6 1/3 yd. of material for $4.95 per yard. What was the cost of<br> the material?

DanielleElmas [232]

Answer:

The total cost of the material was $31.35

6 0

4 years ago

F(x)=7(x-1)+8 whats the Value of f(1)

Natasha2012 [34]

The value of one is. Because I did the math and if u need the worm I send joy to you if you wnsy

6 0

4 years ago

Find the axis of symmetry and the vertex of the graph of y = 3x2 + 2x.

hichkok12 [17]

Step-by-step explanation:

<u>Finding Vertex</u>

Given

$y\:=\:3x^2\:+\:2x$

The vertex of an up-down facing parabola of the form

$y=ax^2+bx+c\:\mathrm{is}\:x_v=-\frac{b}{2a}$

The Parabola params are:

$a=3,\:b=2,\:c=0$

$x_v=-\frac{b}{2a}$

$x_v=-\frac{2}{2\cdot \:3}$

$x_v=-\frac{1}{3}$

$\mathrm{Plug\:in}\:\:x_v=-\frac{1}{3}\:\mathrm{to\:find\:the}\:y_v\:\mathrm{value}$

$y_v=3\left(-\frac{1}{3}\right)^2+2\left(-\frac{1}{3}\right)$

$=3\left(-\frac{1}{3}\right)^2-2\cdot \frac{1}{3}$

$=\frac{1}{3}-\frac{2}{3}$ ∵ $3\left(-\frac{1}{3}\right)^2=\frac{1}{3}$

$=\frac{1-2}{3}$

$=\frac{-1}{3}$

$\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{-a}{b}=-\frac{a}{b}$

$=-\frac{1}{3}$

$y_v=-\frac{1}{3}$

Therefore the parabola vertex is:

$\left(-\frac{1}{3},\:-\frac{1}{3}\right)$

$\mathrm{If}\:a$

$\mathrm{If}\:a>0,\:\mathrm{then\:the\:vertex\:is\:a\:minimum\:value}$

$a=3$

$\mathrm{Minimum}\space\left(-\frac{1}{3},\:-\frac{1}{3}\right)$

<u>Finding symmetry</u>

For a parabola in standard form $y=ax^2+bx+c$

the axis of symmetry is the vertical line that goes through the vertex $x=\frac{-b}{2a}$

$\mathrm{Axis\:of\:Symmetry\:for}\:y=ax^2+bx+c\:\mathrm{is}\:x=\frac{-b}{2a}$

$a=3,\:b=2$

$x=\frac{-2}{2\cdot \:3}$

$x=-\frac{1}{3}$

Therefore,

$\mathrm{Axis\:of\:Symmetry\:for}\:y=3x^2+2x:\quad x=-\frac{1}{3}$

3 0

3 years ago

Solve<br><br> Ten increased by the quotient of a number and 6 is 5

Paladinen [302]

The answer: 30 .
________________________________
Explanation:
_____________________________
10 + (x/6 ) = 5 ; solve for "x" ;
_____________________________
Subtract "10" from each side ;
______________________________
10 + (x/6 ) - 10 = 5 - 10 ;
______________________________
to get:
____________________________
x / 6 = -5 ;
__________________
Now, multiply EACH side of the equation by "6" ; to isolate "x" on one side of the equation; and to solve for "x" ;
______________________________
(x/6) *6 = -5 * (6) ;
_______________________________
To get: x = 30 .
________________________________

6 0

4 years ago