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Usimov [2.4K]
3 years ago
5

Find the perimeter of the polygon.

Mathematics
2 answers:
irinina [24]3 years ago
8 0
The premiter of the polygon is 30 inches
Semmy [17]3 years ago
5 0

9514 1404 393

Answer:

  30 in

Step-by-step explanation:

The enclosing rectangle is 4 by 10, so has a perimeter of ...

  P = 2(L+W) = 2(10+4) = 28

The notch adds 2 inches to the perimeter, so the total of all side lengths is ...

  28 +2 = 30 . . . inches

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The dot plot below shows the number of items in the basket of some shoppers:
scoray [572]

Answer:

The correct answer is A.

Remember summetric means: made up of exactly similar parts facing each other or around an axis; symmetrical. And the peak or highest part is on the 3.

Hope it helps!!

7 0
3 years ago
Read 2 more answers
If the interest rate is 10% a month what is the annual rate? 213.8?
Hatshy [7]
On month -------- 10%
12 month ---------- x %
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 x = 12*10/1 = 12*10 = 120% 
3 0
3 years ago
Initially, there are 40 grams of A and 50 grams of B, and for each gram of B, 2 grams of A is used. It is observed that 15 grams
hram777 [196]

Answer:

X(16)=25.71grams

Step-by-step explanation:

let X(t) denote grams of C formed in  t mins.

For X grams of C we have:

\frac{2}{3}Xg of A and \frac{1}{3}Xg of B

Amounts of A,B remaining at any given time is expressed as:

40-\frac{2}{3}Xg of A and  50-\frac{1}{3}Xg  of B

Rate at which C is formed satisfies:

\frac{dX}{dt} \infty(40-\frac{2}{3}X)(50-\frac{1}{3}X)->\frac{dX}{dt}=k(90-X)\\\therefore \frac{dX}{(90-X)^2}=kdt->\int{\frac{dX}{(90-X)^2}} \, =\int {k} \, dt  \\\therefore \frac{1}{90-X}=kt+c->90-X=\frac{1}{kt+c}\\\\X(t)=90-\frac{1}{kt+c}

Apply the initial condition,X(0)=0 ,to the expression above

0=90-\frac{1}{c} \ \ ->c=\frac{1}{90}\\\therefore\\X(t)=90-\frac{1}{kt+\frac{1}{90}} \ \ ->X(t)=90-\frac{90}{90kt+c}

Now at X(8)=15:

15=90-\frac{90}{90\times 8k+1}  \ ->75=\frac{90}{720k+1}\\k=0.0002778

Substitute  in X(t) to get

X(t)=90-\frac{90}{0.0002778t\times 90+1}\\X(t)=90-\frac{90}{0.25t+1}\\But \ t=16\\\therefore X(t)=90-\frac{90}{0.025\times16+1}\\X(t)=25.71

5 0
3 years ago
Please help me with these questions
Katarina [22]

Answer:


I can only do 1 but I hope it helps.


3 0
3 years ago
What is an algebraic expression to find the number of squares in the border of a 75x75 grid?
tigry1 [53]

Answer:

Well, if the grip is 75 x 75, you can rule out that the grid is 75 squares in each border.

Step-by-step explanation:

75 x 75 = a x b

a= horizontal side lengths

b= vertical side lengths

Rule that a= 75 squares and b= 75 squares.

8 0
3 years ago
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