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statuscvo [17]
3 years ago
11

Help me find the value of X

Mathematics
1 answer:
RideAnS [48]3 years ago
8 0

Answer:

B.  x =  53 degrees.

Step-by-step explanation:

The external angles of all polygons add up to 360 degrees, so:

x +  120 + 90+ 97 = 360

x = 360 - 90 - 120 - 97

x =  53 degrees.

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8/t = 7/28 = 11/44 what does t =?<br><br><br> 18/72 = 18/72 = 25/x what does x =?
Rina8888 [55]
<span>8/t = 7/28 = 11/44 what does t =? t= 32</span>
6 0
3 years ago
a) 3∕5= 60∕100= 40% (resolvido) b) 11∕4= c) 4∕20= d) 9∕5= e) 10∕200= 5∕100= 5% (resolvido) f) 8∕200= g) 30∕300=
Assoli18 [71]

Answer:

En cada expresión queremos obtener 100 en el denominador.

Notar que en la primer eq. tendríamos:

a) 3/5 = (20/20)*(3/5) = (20*3)/(20*5) = 60/100 = 0.6  (corresponde a 60%)

b) 11/4 = ?

Acá el denominador es 4

tenemos que encontrar un número k tal que:

k*4 = 100

k = 100/4 = 25

Entonces podemos multiplicar denominador y numerador por 25.

11/4 = (25/25)*(11/4) = (25*11)/(25*4) = 275/100 = 2.75 (corresponde a 275%)

c) 4/20

el denominador es 20, entonces tenemos que resolver:

20*k = 100

k = 100/20 = 5

multiplicamos denominador y numerador por 5:

(5/5)*(4/20) = (5*4)/(5*20)  =  20/100 = 0.2  (corresponde al 20%)

d) 9/5

el denominador es 5, entonces debemos resolver:

5*k = 100

k = 100/5 = 20

Debemos multiplicar denominador y numerador por 20

(20/20)*(9/5) = (20*9)/(20*5) = 180/100 = 1.8  (corresponde a 180%)

e) 10/200 = 5/100 = 0.05  (corresponde al 5%)

f) 8/200

Se resuelve de similar forma al de arriba (que ya tenias resuelto).

Aca el denominador eso 200, entonces tenemos que tener:

200*k = 100

k = 100/200 = 1/2

Entonces multiplicamos numerador y denominador por 1/2

(1/2/1/2)*(8/200) = (8*1/2)/(200*1/2) = 4/100 = 0.04 (corresponde al 4%)

g) 30/300

aca el denominador es 300

Entonces:

300*k = 100

k = 100/300 = 1/3

Multiplicamos numerador y denominador por 1/3

(1/3/1/3)*(30/300) = (30*1/3)/(300*1/3) = 10/100 = 0.1  (corresponde al 10%)

3 0
3 years ago
How many 1000s are in 287,123
Debora [2.8K]

Answer:

200,000

Step-by-step explanation:THIS IS THE CORRECT ANSWER



7 0
3 years ago
Read 2 more answers
When I was 4 years old, my brother was half of my age, now I am 70 years old. How old is my brother?
DanielleElmas [232]
He is 68. 
Even though he is half your age, that doesn't mean that he will be half your age all your life. That just means he will be X years younger.

If you need an example:
Your brother was two when you are four. So when you become 6, your brother will be come 4. The fact that he is half your age doesn't really matter once you start growing up, because he will never be half you age again.
4 0
3 years ago
1.) Of the 140 pages in a book, 25% of them have illustrations. How many pages have illustrations?
hram777 [196]
1) 140/4=. or. 140/.25
2) $282 x 1.04=. 1 being the price; .04 the tax
3) 650x 1.1=. 1 being Fri. attendance .1 the 10% increase on Saturday
5 0
3 years ago
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