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2 years ago

PLS HELP SHOW ALL YOUR WORKING OUT AND BRAINLIEST WILL BE AWARDED

Mathematics

2 answers:

Sergeu [11.5K]2 years ago

7 0

That would be a=5.97cm

i attached the pic of the solution.

hammer [34]2 years ago

4 0

Answer:

5.97 cm to 3 significant figures.

Step-by-step explanation:

The diameter of the circle will be equal to the length of the diagonal of the square.

Area = 56 = πr^2

r^2 = 56 / π

r = √(56 / π) = 4.222 cm

So the diameter = 8.444 cm.

This is = diagonal of the square so, by The Pythagoras Theorem:

x^2 + x^2 = 8.444^2 where x is the side of the square.

x^2 = (8.444)^2 / 2

x^2 = 35.651

x = 5.971 cm

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PLEASE HELP ME IT WOULD MEAN A LOT

arlik [135]

Answer:

12x³ - 3x

Step-by-step explanation:

Given 

f(x) = x and g(x) = 4x² - 1

Now, 

3 f(x) * g(x) 

= 3 * x (4x² - 1)

= 3x ( 4x² - 1 )

= 12x³ - 3x 

Hope it will help :)

4 0

2 years ago

a cartographer used a scale of 1 inch :300 meters for the heights of different mountains if the actual height of one of those mo

zaharov [31]

Answer:

$12\frac{1}{3}$ inches

Step-by-step explanation:

So to go from 300 to 3700 you have to multiply by $12\frac{1}{3}$

7 0

3 years ago

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.3 days and a standard de

inna [77]

Answer:

The probability of spending between 4 and 7 days in recovery

P(4≤x≤7) = 0.5445

Step-by-step explanation:

Step(i):-

Given mean of the Population μ = 5.3 days

Given standard deviation of the population 'σ' = 2 days

Let 'X' be the random variable in normal distribution

Let x₁ = 4

$Z_{1} = \frac{x_{1}-mean }{S.D} = \frac{4-5.3}{2} = -0.65$

Let x₂ = 7

$Z_{2} = \frac{x_{2}-mean }{S.D} = \frac{7-5.3}{2} = 0.85$

Step(ii):-

The probability of spending between 4 and 7 days in recovery

P(4≤x≤7) = P(-0.65≤Z≤0.85)

= P(Z≤0.85) - P(Z≤-0.65)

= 0.5 + A( 0.85) - ( 0.5 - A(-0.65)

= 0.5 + A( 0.85) - 0.5 +A(0.65) ( ∵A(-0.65) = A(0.65)

= A(0.85) + A(0.65)

= 0.3023 + 0.2422

= 0.5445

Final answer:-

The probability of spending between 4 and 7 days in recovery

P(4≤x≤7) = 0.5445

6 0

3 years ago

If ☆ x 2 = 0, then ☆ 8 will equal: 0 + 6 O + 8 0 x 2 O X4 0 x 8

soldier1979 [14.2K]

The last one I think

3 0

2 years ago

Is 2/8 greater or less than 1/4

Alex17521 [72]

Its neither 2/8 is 1/4 simplified, therefore 2/8 is = 1/4

Hope this helped!

4 0

3 years ago

Read 2 more answers