3 years ago

Hello! Please help ASAP!!!

Mathematics

2 answers:

dusya [7]3 years ago

3 0

Square root of 65 so the equation would be 7^2+4^2=c^2

Crank3 years ago

3 0

The square root of 65 so the equation would be 7^2+4^2=c^2

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FIRST CORRECT GETS BRAINLIEST

BARSIC [14]

Answer:

First choice.

Step-by-step explanation:

cos 11π/6 = cos π/6 = √3/2

So cos 11π/12 = √(1 + cos 11π/6) / √2

= √(1 + √3/2) / √2

= √(2 + √3) / 2.

3 0

2 years ago

Hannah brought a antique clock for £400 and sold it for £640 what was her profit percentage. (with working out please)

3241004551 [841]

640 minus 400 equals 240 being the profit, if that's what you were asking

7 0

4 years ago

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I will give barinlest im not playing im frfr and thank you

worty [1.4K]

Answer:

n = 12

Step-by-step explanation:

84 / 7 = 12

May I have brainliest please? :)

4 0

3 years ago

Read 2 more answers

I don’t know how to answer this

oee [108]

Answer:

m∠1=66

m∠3=66

m∠4=114

Step-by-step explanation:

m∠1+m∠2=180

m∠1+114=180

m∠1=66

m∠1=m∠3

66=m∠3

m∠4=m∠2

m∠4=114

5 0

3 years ago

Sarah is taking a test. The test is designed to produce an overall mean score of 85 with a standard deviation of 5 for all test

Arturiano [62]

Answer:

Option D)

The area below the standardized test score is 0.8413

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 85

Standard Deviation, σ = 5

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(score is below 90)

$P( x < 90) = P( z < \displaystyle\frac{90 - 85}{5}) = P(z < 1)$

Calculation the value from standard normal z table, we have,

$P(x < 90) =0.8413 = 84.13\%$

Thus, the correct answer is

Option D)

The area below the standardized test score is 0.8413

4 0

3 years ago