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3 years ago

How could the formula for perimeter be rearranged to find the length of the playground?

Mathematics

2 answers:

Gennadij [26K]3 years ago

6 0

P = 2l + 2w
p - 2w = 2l
l = p-2w/2
It would be the third response

kati45 [8]3 years ago

5 0

Answer:

The third option

Step-by-step explanation:

the formula is basically reversed, you can check it yourself by giving the W and L fake values then execute the first formula then the second formula and you will receive the value of your length as your answer

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Solve the equation.<br> (x-5)(x+3)=0

LuckyWell [14K]

(x-5)(x+3)=0
x^2+3x-5x-15=0
(x^2+3x) (-5x-15)
x(x+3) -5(x+3)
x-5=0 x+3=0
x=5 OR -3

8 0

3 years ago

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Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 s?

QveST [7]

A. 100/20

The distance in meters should be divided by the time in seconds to get the value of the distance in meters travelled in one second.

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3 years ago

The rate of change of the function f(x) = 8 sec(x) + 8 cos(x) is given by the expression 8 sec(x) tan(x) − 8 sin(x). Show that t

liq [111]

Answer:

Shown - See explanation

Step-by-step explanation:

Solution:-

- The given form for rate of change is:

8 sec(x) tan(x) − 8 sin(x).

- The form we need to show:

8 sin(x) tan2(x)

- We will first use reciprocal identities:

$8\frac{sin(x)}{cos^2(x)} - 8sin(x)$

- Now take LCM:

$8\frac{sin(x)- sin(x)*cos^2(x)}{cos^2(x)}$

- Using pythagorean identity , sin^2(x) + cos^2(x) = 1:

$8*sin(x)*\frac{1- cos^2(x)}{cos^2(x)} = 8*sin(x)*\frac{sin^2(x)}{cos^2(x)}$

- Again use pythagorean identity tan(x) = sin(x) / cos(x):

$8*sin(x)*tan^2(x)$

8 0

4 years ago

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Mario purchases a prepaid phone plan for $50. Each minute he uses costs $0.13. How many minutes can Mario talk on this plan? Wri

Mekhanik [1.2K]

0.13 cents per minute

$50 per month

13 goes into 5,000 = 384

384 minutes per month

6 0

4 years ago

Given that AXB is complementary to both CYD and FZE and m AXB=20 degrees what is m CYD+m FZE?

ohaa [14]

We know that AXB + CYD and AXB + FZE = 90

20 + CYD = 90 and 20 + FZE = 90

We can see that CYD and FZE are equal so we can use one equation

Let's use 20 + CYD = 90

CYD = 70 and FZE is also equal to 70 because CYD and FZE are equal.

so 70 + 70 = 140 degree

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3 years ago

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