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3 years ago

Please help me 2/3÷(−5/6)

Mathematics

2 answers:

agasfer [191]3 years ago

3 0

I hope this helps you

2/3÷(-5/6)

2/3× -6/5

2×-6/3×5

-12/15

-4/5

const2013 [10]3 years ago

3 0

2/3 ÷ (-5/6)

When dividing fractions, you multiply the first fraction by the second fractions reciprocal. The reciprocal is just the numerator & denominator flipped.

New question : 2/3 × (-6/5)

Multiply.

-12 / 15

Simplify.

- 4/5

~Hope I helped!~

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I really need help finding the solution!!

Mrac [35]

Answer:

-0.5 is not a solution

2 is a solution

Step-by-step explanation:

To check if something is a solution of the equation, you need to substitute the value in place of the variable

15 + 2y = -12 - 4y

15 + 2(-0.5) = -12 - 4(-0.5)

15 - 1 = -12 + 2

14 ≠ -10 ∴ -0.5 is not a solution

5 - 2(3x + 5) = 3 - 10x

5 - 2[3(2) + 5] = 3 - 10(2)

5 - 2(6 + 5) = 3 - 10(2)

5 - 12 - 10 = 3 - 120

-17 = -17 ∴ 2 is a solution

3 0

2 years ago

Find all degree solutions in the interval 0° ≤ θ < 360°. If rounding is necessary, round to the nearest tenth of a degree. Us

xenn [34]

Answer:

$\theta_{1} \approx 30.473^{\textdegree}$

$\theta_{2} \approx 120.473^{\textdegree}$

$\theta_{3} \approx 210.473^{\textdegree}$

$\theta_{4}\approx 300.473^{\textdegree}$

Step-by-step explanation:

The equation needs to be rearranged in terms of one trigonometric function:

$5\cdot \sin 2\theta - 9\cdot \cos 2\theta = 0$

$5\cdot \tan 2\theta - 9 = 0$

$5\cdot \tan 2\theta = 9$

$\tan 2\theta = \frac{9}{5}$

$\theta = \frac{1}{2}\cdot \tan^{-1} \left(\frac{9}{5} \right)$

The tangent function has positive values in the 1st and 3rd Quadrants. Then, the solutions are:

$\theta_{1} \approx 30.473^{\textdegree}$

$\theta_{2} \approx 120.473^{\textdegree}$

$\theta_{3} \approx 210.473^{\textdegree}$

$\theta_{4}\approx 300.473^{\textdegree}$

3 0

3 years ago

Estimate the percent of the number 7% of 501

Dmitry [639]

Answer:

35.7

Step-by-step explanation:

I typed percentage calculator, find a calculator, calculate it, find 35.7‍♀️

7 0

3 years ago

Simplify O A. y B. 76 O C. 2 OD. +2

madreJ [45]

The answer will be t6

6 0

3 years ago

Read 2 more answers

Brad is looking out his window daydreaming. The number of people who pass by outside his window per hour is a Poisson random var

11Alexandr11 [23.1K]

Answer:

(a) The probability of 7 people passing by the window in the first hour is 0.000034.

(b) The probability of Y = 17 is 0.1144.

Step-by-step explanation:

Let Y = number of people who passes by Brad's window per hour.

The random variable X follows a Poisson distribution with parameter, λ = 24.

The probability mass function of a Poisson distribution is:

$P(Y=y)=\frac{e^{-24}24^{y}}{y!};\ x=0,1,2,...$

(a)

Compute the value of P (Y = 7) as follows:

$P(Y=7)=\frac{e^{-24}24^{7}}{7!}=\frac{0.17315}{5040} =0.000034$

Thus, the probability of 7 people passing by the window in the first hour is 0.000034.

(b)

It is provided that 5 people have already passed by the window in the first 30 minutes.

This implies that in the next 30 minutes 12 people will pass.

The average number of people passing Brad's window in 30 minutes is, $\lambda=\frac{24}{2}=12$

Compute the probability of Y = 17 as follows:

P (Y = 17) = P (12 people passing in the nest 30 minutes)

$=\frac{e^{-12}12^{12}}{12!}=\frac{54782414.52}{479001600} =0.114368\approx0.1144$

Thus, the probability of Y = 17 is 0.1144.

(c)

The expected value and variance of a Poisson distribution are same as λ.

So,

E (Y) = 24

V (Y) = 24

Thus, the value of E (Y) and V (Y) is 24.

8 0

3 years ago