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3 years ago

What’s the perimeter?

Mathematics

2 answers:

uysha [10]3 years ago

7 0

Answer:

answer 60,40 i think

Step-by-step explanation:

the perimiter is the outside of an object, when finding the perimiter you add the suroundding together, when it comes to area you multiply

alexira [117]3 years ago

7 0

192inches^2

Step-by-step explanation:

its b(h)/2 and its b=16 and h=12 then divide by two to find the area, that's one half of the shape so multiply it by 2

You might be interested in

You have 15 pennies in your pocket. Of those pennies, 4 are Canadian. Suppose you pick a penny out of your pocket at random. Fin

vlada-n [284]

Answer:

11/15

Step-by-step explanation:

If 4 out of 15 are Canadian, the ratio of the probability of picking a Canadian is 4/15. That means that the probability of NOT picking a Canadian is the complement of 4/15 which is 11/15. Therefore, the probability of not picking a Canadian is the same thing as the probability of picking an American penny which is 11/15.

6 0

3 years ago

A teacher places n seats to form the back row of a classroom layout. Each successive row contains two fewer seats than the prece

Alex_Xolod [135]

Answer:

The number of seat when n is odd $S_n=\frac{n^2+2n+1}{4}$

The number of seat when n is even $S_n=\frac{n^2+2n}{4}$

Step-by-step explanation:

Given that, each successive row contains two fewer seats than the preceding row.

Formula:

The sum n terms of an A.P series is

$S_n=\frac{n}{2}[2a+(n-1)d]$

$=\frac{n}{2}[a+l]$

a = first term of the series.

d= common difference.

n= number of term

l= last term

$n^{th}$ term of a A.P series is

$T_n=a+(n-1)d$

n is odd:

n,n-2,n-4,........,5,3,1

Or we can write 1,3,5,.....,n-4,n-2,n

Here a= 1 and d = second term- first term = 3-1=2

Let $t^{th}$ of the series is n.

$T_n=a+(n-1)d$

Here $T_n=n$ , n=t, a=1 and d=2

$n=1+(t-1)2$

⇒(t-1)2=n-1

$\Rightarrow t-1=\frac{n-1}{2}$

$\Rightarrow t = \frac{n-1}{2}+1$

$\Rightarrow t = \frac{n-1+2}{2}$

$\Rightarrow t = \frac{n+1}{2}$

Last term l= n,, the number of term $=\frac{ n+1}2$ , First term = 1

Total number of seat

$S_n=\frac{\frac{n+1}{2}}{2}[1+n}]$

$=\frac{{n+1}}{4}[1+n}]$

$=\frac{(1+n)^2}{4}$

$=\frac{n^2+2n+1}{4}$

n is even:

n,n-2,n-4,.......,4,2

Or we can write

2,4,.......,n-4,n-2,n

Here a= 2 and d = second term- first term = 4-2=2

Let $t^{th}$ of the series is n.

$T_n=a+(n-1)d$

Here $T_n=n$ , n=t, a=2 and d=2

$n=2+(t-1)2$

⇒(t-1)2=n-2

$\Rightarrow t-1=\frac{n-2}{2}$

$\Rightarrow t = \frac{n-2}{2}+1$

$\Rightarrow t = \frac{n-2+2}{2}$

$\Rightarrow t = \frac{n}{2}$

Last term l= n, the number of term $=\frac n2$ , First term = 2

Total number of seat

$S_n=\frac{\frac{n}{2}}{2}[2+n}]$

$=\frac{{n}}{4}[2+n}]$

$=\frac{n(2+n)}{4}$

$=\frac{n^2+2n}{4}$

4 0

3 years ago

At the start of the month, Suzanne's clothing store website had 7,278 hits. At the end of the month, it had 50,165 hits. If each

jeyben [28]

Answer:

The closest answer would be A. 64,500

Step-by-step explanation:

50,165 - 7,278 = 42,887 hits

42,887 × 1.5 = 64,350.5 minutes

3 0

3 years ago

Simplify 5t+ (-3) - ((7t + 5) -( 8-39). A -4 B 4 C -10t D 10t

brilliants [131]

I guess it's A -4 sorry if it's wrong answer

3 0

3 years ago

A survey of voters explored the relationship between the ages of voters and wether or not they support building skateboard ramps

Novosadov [1.4K]

Answer:

(a)12%

(b)20%

Step-by-step explanation:

(a)In the age group 58 and above:

Number in favor of building the skateboard ramps=6

Number opposed to building the skateboard ramps=44
Total = 50

Percentage of those in favor = $\frac{6}{50}X100 =12\%$

(b)In the age group 18-37

Number in favor of building the skateboard ramps=40

Number opposed to building the skateboard ramps=10
Total = 50

Percentage of those opposed to it = $\frac{10}{50}X100 =20\%$

(c)

Total Number of those in favor of building the skateboard ramps=73

Total Number opposed to building the skateboard ramps=77
Total = 150

Percentage of those in favour = $\frac{73}{150}X100 =48.67 \approx 49\%$

6 0

3 years ago

Read 2 more answers