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1 year ago

PLSSS HELP IF YOU TURLY KNOW THISS

Mathematics

2 answers:

Elenna [48]1 year ago

6 0

Answer:

x = 9 silly

Step-by-step explanation:

4 + 9 = 13

Elodia [21]1 year ago

3 0

Answer:

try x equals nine I am sure

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balandron [24]

The answer is 4/8 because half of 16 is 8 and half of 8 is 4, therefore they are equivalent

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2 years ago

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Gekata [30.6K]

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2 years ago

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A city council consists of seven Democrats and five Republicans. If a committee of four people is selected, find the probability

Hoochie [10]

Answer:

The probability of selecting two Democrats and two Republicans is 0.4242.

Step-by-step explanation:

The information provided is as follows:

A city council consists of seven Democrats and five Republicans.
A committee of four people is selected.

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

${n\choose k}=\frac{n!}{k!\times (n-k)!}$

Compute the number of ways to select four people as follows:

${12\choose 4}=\frac{12!}{4!\times (12-4)!}=495$

Compute the number of ways to selected two Democrats as follows:

${7\choose 2}=\frac{7!}{2!\times (7-2)!}=21$

Compute the number of ways to selected two Republicans as follows:

${5\choose 2}=\frac{5!}{2!\times (5-2)!}=10$

Then the probability of selecting two Democrats and two Republicans as follows:

$P(\text{2 Democrats and 2 Republicans})=\frac{21\times 10}{495}=0.4242$

Thus, the probability of selecting two Democrats and two Republicans is 0.4242.

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1 year ago

Which equation represents a line that has the slope 1/3 and passes through the point (-2,1)

goldenfox [79]

Answer:

y - 1 = (1/3)(x + 2)

Step-by-step explanation:

Here m = 1/3 and (-2, 1) is a point on the line. The appropriate equation is

y - k = m(x - h), where (h, k) is the pt on the line.

Subbing the known values, we get:

y - 1 = (1/3)(x + 2)

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2 years ago

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bulgar [2K]

The inverse functions of sine, cos and tan functions are csc, sec and cot respectively.

<u>Step-by-step explanation:</u>

The reciprocals of sine, cos and tan functions are csc, sec and cot functions. The reciprocal of cosine function is secant, (sec) sec θ = $$\frac{1}{cos \theta}$

The inverse or reciprocal function is cosecant (csc), $$ csc \theta = \frac{1}{sin\theta}$

The inverse tangent function is cotangent (cot) , expressed in two ways: $$ cot\theta = \frac{1}{tan\theta}$ or $$ cot\theta = \frac{cos\theta}{sin \theta}$

So $$ tan\theta = \frac{sin \theta}{cos \theta}$ then its reciprocal or inverse is termed as cot θ.

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2 years ago