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3 years ago

7

Josie is 11 years older than macy

1 answer:

lara [203]3 years ago

6 0

Let Macy be x years old.

Hence,

Josie = 11 years older than Macy = (11 + x) years old

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You are given the dollar value of a product in 2012 and the rate at which the value of the product is expected to change during

Ray Of Light [21]

Answer:

$V=r*t+D-2*r$

with

$V=$ dollar value of the product

$r=$ value's rate of change

$t=$ time in years (where t=0 represents 2010)

$D=$ dollar value of product in 2012

Step-by-step explanation:

A linear equation for V in terms of t will have the following form

$V=r*t+C$ <em>(equation 1)</em>

where $r$ will be the rate at which the value of the value of product is expected to change, $V$ is the dollar value of the product at the year $t$ (being $t=0$ for 2010) and $C$ is a constant number which we should be able to find knowing the value of $V$ at some point in time.

Let's call $D$ the dollar value of the product in 2012, we can replace this value in <em>the equation 1</em> in order to find $C$

$V=r*t+C$ <em>(equation 1)</em>

$D=r*2+C$

$C=D-2*r$

So the final equation would be

$V=r*t+D-2*r$

with

$V=$ dollar value of the product

$r=$ value's rate of change

$t=$ time in years (where t=0 represents 2010)

$D=$ dollar value of product in 2012

3 0

3 years ago

The formula for glue says to add 55 ml of hardener to each containet of resin. How much hardener should be added to 14 container

Marysya12 [62]

55 ml × 14 containers = 770 ml

4 0

3 years ago

Write the standard form of the equation of the circle with endpoints of a diameter at the points (7,2) and (-9,5).

lys-0071 [83]

Answer:

$(x+1)^2 + (y- 3.5)^2 =64$

Step-by-step explanation:

We are given that endpoints of a diameter at the points (7,2) and (-9,5).

Center of the circle is the mid point of diameter

So, first find the mid point of diameter

Formula : $x=\frac{x_1+x_2}{2} , y=\frac{y_1+y_2}{2}$

$(x_1,y_1)=(7,2)\\(y_1,y_2)=(-9,5)$

Substitute the values in formula

$x=\frac{7-9}{2} , y=\frac{2+5}{2}$

$x=-1 , y=3.5$

So, center of circle = (h,k )=(-1,3.5)

To find length of diameter :

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$(x_1,y_1)=(7,2)\\(y_1,y_2)=(-9,5)$

$d=\sqrt{(-9-7)^2+(5-2)^2}$

$d=\sqrt{265}$

Length of radius = r = $\frac{Diameter}{2}=\frac{\sqrt{256}}{2}$

Standard form of the equation of the circle : $(x -h)^2 + (y- k)^2 = r^2$

(h,k )=(-1,3.5)

$r=\frac{\sqrt{256}}{2}$

Equation of the circle : $(x+1)^2 + (y- 3.5)^2 =(\frac{\sqrt{256}}{2})^2$

Equation of the circle : $(x+1)^2 + (y- 3.5)^2 =64$

Hence the standard form of the equation of the circle with endpoints of a diameter at the points (7,2) and (-9,5) is $(x+1)^2 + (y- 3.5)^2 =64$

5 0

4 years ago

The cost of 7 scarves is $78.75. What is the unit price?

Veseljchak [2.6K]

One scarf would cost $11.25. take the total price and divide by the number of scarves. :)

3 0

3 years ago

What is the area of a circle with the radius of 11.5 meters? ill give brainliest

ira [324]

Answer:

415.265 m²

Step-by-step explanation:

A=π r²

π*132.25

5 0

2 years ago

Read 2 more answers