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4 years ago

Will give brainliest!

Mathematics

2 answers:

tekilochka [14]4 years ago

7 0

Hey there!!

Angle 2 is given by 12 x and hence angle 4 would become 12x due to vertically opposite angle.

Angle 1 is given by 3x and hence, angle 4 + angle 1 = 180 ( straight angles )

... 12x + 3x = 180

... 15x = 180

... x = 12

Angle 4 = 12x

... 12 ( 12 )

... 144°

Hope my answer helps!!

hoa [83]4 years ago

4 0

angle 4 = 12x =12 times(12)=144

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Are you good at maths?????????????????????????

Flauer [41]

The probability that a student, chosen at random, does not study chemistry is 20/41.

<h3>What is Probability?</h3>

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event. For an experiment having 'n' number of outcomes, the number of favorable outcomes can be denoted by x. The formula to calculate the probability of an event is as follows.

Probability(Event) = Favorable Outcomes/Total Outcomes = x/n

Here, Total number of student = 41

Student who does not study chemistry = 20

So, the probability = favorable outcome / total outcomes

P(not studying chemistry) = 20 / 41

Thus, The probability that a student, chosen at random, does not study chemistry is 20/41.

Learn more about Probability from:

brainly.com/question/11234923

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7 0

2 years ago

Juan has a mass of 50 kg. If he is running at a velocity of 2 m/s, how much kinetic energy does he have?

VLD [36.1K]

Answer:

100 J

Step-by-step explanation:

Kinetic energy is jointly proportional to mass and the square of the velocity.

KE = 1/2mv²

KE = 1/2(50 kg)(2 m/s)² = 100 J

Juan has a kinetic energy of 100 joules.

6 0

3 years ago

Please helpp i need this doneee :((

egoroff_w [7]

Answer:

$w = \frac{5}{8}, v = \frac{21}{2}$

Step-by-step explanation:

With given information, we have $\frac{TR}{TQ} = \frac{TS}{TP}$ , so $\frac{5}{13} = \frac{3w}{3w+3}$ , which gives us $w=\frac{5}{8}$ . Meanwhile, we have $\frac{TR}{TQ}=\frac{RS}{QP}$ , so $\frac{5}{13}=\frac{10}{2v+5}$ , which gives us $v = \frac{21}{2}$ .

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3 years ago

What is the sum of the infinite geometric series? Sigma-Summation Underscript n = 1 Overscript 4 EndScripts (negative 144) (one-

Irina18 [472]

The sum of the infinite geometric series is -288.

<h2>Given that</h2>

A finite geometric series with n = 4, a₁ = -144, and r = ½.

<h3>We have to determine</h3>

What is the sum of the infinite geometric series?

<h3>According to the question</h3>

The sum of the infinite is determined by the following formula;

$\rm S\infty = \dfrac{a_1(1-r^n)}{1-r}\\\\$

A finite geometric series with n = 4, a₁ = -144, and r = ½.

Substitute all the values in the formula;

$\rm S\infty = \dfrac{a_1(1-r^n)}{1-r}\\\\S\infty = \dfrac{-144 (1- \dfrac{1}{2}^4)}{1-\dfrac{1}{2}}\\\\S \infty = \dfrac{-144 \times \dfrac{15}{16}}{\dfrac{1}{2}}\\\\S \infty = -270$