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solniwko [45]
3 years ago
13

The walls in a room are being painted. If 4 cans cover 480 sq ft then how many cans cover 840 sq ft?

Mathematics
2 answers:
Papessa [141]3 years ago
6 0

ANSWER:

Let the no is cans be x.

On using inverse proportionality,

  • 480/4 = 840/x
  • 120 = 840/x
  • x = 840/120
  • x = 7.

Hence, 7 cans cover 840sq ft.

solong [7]3 years ago
5 0

Answer:

7 cans

Step-by-step explanation:

You will first have to divide 480 by 4

The anwser is 480 ÷ 4 = 120

Then you will have to 840 ÷ 120 = 7

<h2>The answer is 7 cans </h2>
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Can someone help me with this? look at picture
nika2105 [10]

Answer:

19 (using "3.14" as pi)

18.99036781...(using pi button)

Step-by-step explanation:

Formula: C=dπ

so, (59.66)=dπ

you would divide circumference (C) by pi which will get you the answers above :)

hope this helped

7 0
3 years ago
Si un triángulo tiene una hipotenusa de 15 cm y un cateto que mide 12 cm, ¿cual es la longitud del otro cateto?
BartSMP [9]

Answer:

   

9cm

Explicación:

El teorema de pitagoras nos dice que la hipotenusa al cuadrado es igual a la suma de los catetos al cuadrado:

c^{2} =a^{2} + b^{2}

Donde c es la hipotenusa y a  y b son los catetos.

Por lo cual, podemos reemplazar c por 15cm y a por 12cm :

15^{2} =12^{2} +b^{2}

Finalmente , debemos resolver la ecuación para b, así que b es igual a :

225=144+b^{2} \\225-144=144+b^{2} -144\\81=b^{2} \\\sqrt{81} =b\\9=b

Por lo tanto, la longitud del otro cateto es 9 cm

3 0
2 years ago
The table can be used to determine the solution to the system of equations, 2y − x = 8, and y − 2x = −5. Which solution can be u
SIZIF [17.4K]
The answer is (6, 7)

This is the system of two equations:
<span>2y − x = 8
y − 2x = −5
_____
Express the second equation in the term of y:
2y - x = 8
y = 2x - 5
_____
Substitute y in the first equation:
2(2x - 5) - x = 8
4x - 10 - x = 8
4x - x = 10 + 8
3x = 18
x = 18/3
x = 6

Since x = 6 and y = 2x - 5, then:
y = 2 * 6 - 5 
y = 12 - 5
y = 7

Therefore, (x, y) = (6, 7)</span>
4 0
3 years ago
Find all three angles of the triangle x-5 x+10 x-35
Alexus [3.1K]

Answer:

See below ~

Step-by-step explanation:

<u>Given</u> : 3 angles of a Δ

  • (x + 5)°
  • (x + 10)°
  • (x + 15)°

<u>Solving</u> :

  • According to Angle Sum Property of a triangle, the angles of a triangle add up to 180°
  • x + 5 + x + 10 + x + 15 = 180
  • 3x + 30 = 180
  • x + 10 = 60
  • x = 50

<u>Finding the angles</u>

  • x + 5 = 50 + 5 = 55°
  • x + 10 = 50 + 10 = 60°
  • x + 15 = 50 + 15 = 65°
6 0
2 years ago
please help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Phantasy [73]

Answer:

Area = 7.853981 in^2                (2.5 Pi)

Perimeter = 11.42478 in              (3.63Pi)

Step-by-step explanation:

Area

Lg semi circle area = Pi(2^2)(0.5) = 3.141593(4)0.5) = 6.283185 in^2

Sm semi circle area = Pi(1^2)(0.5) = 3.141593(2)(0.5) = 1.570796 in^2

added together = 7.853981 in^2

Perimeter

Lg semi circle perimeter = Pi(4)(0.5) + 2 = 8.283185 in

Sm semi circle perimeter = Pi(2)(0.5) = 3.141593 in

added together = 11.42478 in

5 0
3 years ago
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