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2 years ago

X +81=75 Hi hello bonjour hi

Mathematics

2 answers:

dedylja [7]2 years ago

5 0

Answer:

x= -6

Step-by-step explanation:

Paha777 [63]2 years ago

4 0

Answer:

x = -6

Step-by-step explanation:

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Find the probability of at least 2 girls in births. Assume that male and female births are equally likely and that the births ar

tiny-mole [99]

We assume that male and female births are equally likely, it means that the probability of birth of male= probability of birth of female = 100%/2=50% or 0.5We have 2 independent events. So what will be the variants:
Male and FemaleMale and Male Female and Male Female and Female
All four variants are equally likely.Probability of each one is 1/4 = 0.25.So, Result "Female and Female"
are probability = 0.250 --- if round to three decimal places.

6 0

2 years ago

Can you answer these boxes? It's fractions and powers

r-ruslan [8.4K]

Answer:

e^4 d^2

-------------------------

b^3

Step-by-step explanation:

b^-3 c^0 d^2

-------------------------

e^-4

Negative exponents flip positions

e^4 c^0 d^2

-------------------------

b^3

c to the zero power is 1

e^4 d^2

-------------------------

b^3

3 0

3 years ago

Read 2 more answers

Describe, in detail, when to use the law of cosines, the law of sines, and the law of sines with the ambiguous case. Provide gen

shutvik [7]

You can use the Law of Cosines, if only one of which is missing: three sides and one angle. Hence, if the known properties of the triangle is SSS(side-side-side) or SAS (side-angle-side), this law is applicable.

You can use the Law of Sines if you want to equate the ratio of the sine of an angle and its opposite side. This can be used if the known properties of the triangle is ASA(angle-side-angle) or SAS.

The ambiguous case is the SAS triangle. This could be easily solved using Law of Sines than Law of Cosines. Take for example: side a = 4, side b = 10, angle A = 23°. Then, we can determine angle B through Sine Law.

sin 23°/4 = sin B/10
B = 77.64°

7 0

3 years ago

PLEASE HELP

jeka94

Answer:

91.92%

Step-by-step explanation:

Given that:

Mean (μ) = 6.2, standard deviation (σ) = 1.5

Z score is a measure in statistics to determine the relationship of a measured value with the mean. It is given by the equation:

$z=\frac{x-\mu}{\sigma}$

To calculate the probability that a patient has a blood test result less than or equal to 8.3, we need to calculate the z score of 8.3

For x = 8.3, the z score is:

$z=\frac{x-\mu}{\sigma}=\frac{8.3-6.2}{1.5} =1.4$

From the probability distribution table:

P( x ≤ 8.3) = P(z < 1.4) = 0.9192 = 91.92%

7 0

3 years ago

Solve for AE <br> what is the aswer

Pachacha [2.7K]

So triangles bcd and aec are similar. so this makes lines ac and bc similar and lines db and ae similar.

to solve this problem, we just need to do some algebra
$\frac{ae}{ac} = \frac{bd}{bc}$
now we substitute those values in
$\frac{7x + 2}{9 + 3} = \frac{4}{3}$
which results in
$\frac{7x + 2}{12} = \frac{4}{3}$
then multiply both sides by 12
$7x + 2 = 16$
soon you should get x=2 with the length of ae being 16

5 0

2 years ago