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2 years ago

Q17 Look at this shape, the circle exactly fits into the square. If the length of the

Mathematics

1 answer:

ozzi2 years ago

7 0

Answer:

25.13

Step-by-step explanation:

Formular

= C = 2πr

C = circumference

r = radius

2 × 3.14 × 4

= 25.13

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If a+1/a = 5, find the value of a² +1/a²

Orlov [11]

a - 1/a =5

take squaring both side

(a - 1/a )^2 = (5)^2

a^2 +1/a^2 -2.a.1/a =25

a^2+1/a^2 -2 =25

a^2+1/a^2 =27 (answer)

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2 years ago

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X³ by a³ + a³by x³=p x³by a³- a³by ³=q eliminate x

sasho [114]

Answer:

Step-by-step explanation:

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2 years ago

What is Use the table to solve the inequality 2x<2.<br><br> x −1 0 1 2 3<br> 2x

Vedmedyk [2.9K]

Answer:

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Step-by-step explanation:

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2 years ago

What is -3×^2+1467x-86940=0 ?

frozen [14]

For this case we must solve the following quadratic equation:

$-3x ^ 2 + 1467x-86940 = 0$

If we divide both sides of the equation by 3 we have:

$-x ^ 2 + 489-28980 = 0$

The solutions will come from:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2 (a)}$

Where:

$a = -1\\b = 489\\c = -28980$

Substituting:

$x = \frac {-489 \pm \sqrt {(489) ^ 2-4 (-1) (- 28980)}} {2 (-1)}\\x = \frac {-489 \pm \sqrt {239121-115920}} {- 2}\\x = \frac {-489 \pm \sqrt {123201}} {- 2}\\x = \frac {-489 \pm351} {- 2}$