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3 years ago

Bulletin board is 8 feet long and 5 feet wide. How many feet of border does it need?

2 answers:

7 0

8 × 5 = 40

So the border has to be 40 feet.

Hope this helps!

Work:

length × width = answer

length = 8
width = 5
answer = 40

vesna_86 [32]3 years ago

6 0

Well, all you would need to do is multiply 8 feet by 5 feet, (length times width), which would give you the area and amount of borders in feet needed, which is 40 feet in total.
I hope I helped, and PLEASE choose my answer as the Brainliest!
Thank you! =D

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allsm [11]

Answer:

$mnb^2 = ac(m+n)^2$

Step-by-step explanation:

Given

$ax^2 +bx + c = 0$

Required

Condition that the roots is in m : n

Let the roots of the equation be represented as: mA and nA

A quadratic equation has the form:

$x^2 + (sum\ of\ roots)x + (product\ of\ roots)=0$

$x^2 - (\frac{b}{a})x + \frac{c}{a} = 0$

We have the roots to be mA and nA.

So, the sum is represented as:

$Sum = mA + nA$

$Sum = A(m + n)$

And the product is represented as:

$Product = mA * nA$

$Product = mnA^2$

By comparing:

$x^2 + (sum\ of\ roots)x + (product\ of\ roots)=0$

with

$x^2 - (\frac{b}{a})x + \frac{c}{a} = 0$

$Sum = -\frac{b}{a}$

$Product = \frac{c}{a}$

So, we have:

$Sum = -\frac{b}{a}$

$A(m + n) = -\frac{b}{a}$

Make A the subject:

$A = \frac{-b}{a(m+n)}$

$Product = \frac{c}{a}$

$mnA^2 = \frac{c}{a}$

Substitute $A = \frac{-b}{a(m+n)}$

$mn(\frac{-b}{a(m+n)})^2 = \frac{c}{a}$

$mn\frac{b^2}{a^2(m+n)^2} = \frac{c}{a}$

Multiply both sides by a

$a * mn\frac{b^2}{a^2(m+n)^2} = \frac{c}{a} * a$

$\frac{mnb^2}{a(m+n)^2} = c$

Cross Multiply:

$mnb^2 = ac(m+n)^2$

Hence, the condition that the ratio is in m:n is

$mnb^2 = ac(m+n)^2$

7 0

2 years ago

What is a sum of 1/2 and 3/10 in simplest from

Dahasolnce [82]

Answer:

4/5

Step-by-step explanation:

1/2=5/10

5/10+3/10=8/10

simplified or 8/10 divided by 2 =4/5 and u cant simplify it anymore

4 0

2 years ago

Read 2 more answers

Can u show an example of how to convert a linear equation to standard form for algebra 1 9th grade.

notsponge [240]

Answer:

-4x+y=7

Step-by-step explanation:

lets say you have y=4x+7 (linear equation)

to conver it to standard form you've got to make it Ax+By=C

so you minus the 4x and you should have -4x+y=7 for your standard form

5 0

3 years ago

H(x) = 2x^2 =4; Find h(-10)

bogdanovich [222]

For this case we have the following function:

$h (x) = 2x ^ 2 + 4$

We must find the value of the function when x = -10

So, replacing we have:

$h (-10) = 2 (-10) ^ 2 + 4\\h (-10) = 2 (100) +4\\h (-10) = 200 + 4\\h (-10) = 204$

Thus, the value of the function is 204 when x = -10

Answer:

$h (-10) = 204$

3 0

3 years ago

12 lb13 oz + 6 lb11 oz

max2010maxim [7]

Answer:

19 lbs and 8 oz

Step-by-step explanation:

12 + 6 = 18 13 + 11 = 24 24 oz = 1 lb and 8 oz 1 lb and 8 oz + 18 = 19 lbs and 8 oz

6 0

3 years ago