2 years ago

Someone plz help URGENTLY will mark brainliest plz no links or will be reported

Mathematics

1 answer:

aivan3 [116]2 years ago

5 0

The answer for 6x + 7 = loading…

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Find the value of x. Round to the nearest tenth. Answers A-12.5 B-10 C-13 D-9.7!

kvasek [131]

Answer: A. 12.5

Step-by-step explanation:

$cos\ \theta=\dfrac{adjacent}{hypotenuse}\\\\\\cos\ 28^o=\dfrac{11}{x}\\\\\\\rightarrow\ x=\dfrac{11}{cos\ 28^o}\\\\\\\rightarrow\ x=12.46\\\\\\\rightarrow\ \boxed{x=12.5}\qquad rounded\ to\ the\ nearest\ tenth$

6 0

2 years ago

Read 2 more answers

The length of a side of an equilateral triangle is x-45

Ilia_Sergeevich [38]

Answer:

that means all the other sides are x-45 and each of the angles are 60 degrees

(i dont know what your asking for)

3 0

2 years ago

Arthur Jackson can run 1,500 meters in about 3 1/2 minutes. How many meters per minute is this?

Nimfa-mama [501]

(1500 meters) / (about 3.5 minutes) =

(1500/about 3.5) (meters/minute) =

about 428.6 meters/minute

6 0

3 years ago

3. From the table below, find Prof. Xin expected value of lateness. (5 points) Lateness P(Lateness) On Time 4/5 1 Hour Late 1/10

wariber [46]

Answer:

The expected value of lateness $\frac{7}{20}$ hours.

Step-by-step explanation:

The probability distribution of lateness is as follows:

Lateness P (Lateness)

On Time 4/5

1 Hour Late 1/10

2 Hours Late 1/20

3 Hours Late 1/20

The formula of expected value of a random variable is:

$E(X)=\sum x\cdot P(X=x)$

Compute the expected value of lateness as follows:

$E(X)=\sum x\cdot P(X=x)$

$=(0\times \frac{4}{5})+(1\times \frac{1}{10})+(2\times \frac{1}{20})+(3\times \frac{1}{20})\\\\=0+\frac{1}{10}+\frac{1}{10}+\frac{3}{20}\\\\=\frac{2+2+3}{20}\\\\=\frac{7}{20}$

Thus, the expected value of lateness $\frac{7}{20}$ hours.

8 0

2 years ago

What is a to the -6th power using a positive exponent

pentagon [3]

$a^{-6}=\left(\dfrac{1}{a}\right)^6=\dfrac{1}{a^6}$

5 0

3 years ago

Someone plz help URGENTLY will mark brainliest plz no links or will be reported ​

Someone plz help URGENTLY will mark brainliest plz no links or will be reported