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3 years ago

!!!!!HELP!!!!!

Mathematics

2 answers:

DIA [1.3K]3 years ago

5 0

Answer:

The experimental probability would be equal to the number of times the event happened over the number of times it was attempted. In this case, the experiment was tried 48 times, and only 6 times did it land on 2. The experimental probability is 6/48, which simplified to 1/8.

ollegr [7]3 years ago

4 0

Answer:

1/8

Step-by-step explanation:

Please give me Brainliest

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Find the angle between u = (-2,-5) and v = (5,2)

OleMash [197]

The angle between u = (-2,-5) and v = (5,2) is 134 degrees approximately.

<u>Solution:</u>

Given, two vectors are u = (-2, -5) and v = (5, 2)

We have to find the angle between two vectors.

We know that,

$a. b=\|a\| .\|b\| \times \cos \theta$

where $\theta$ is angle between vectors a and b

$\text { Now vectors are }(-2 \vec{\imath}-5 \vec{\jmath}) \text { and }(5 \vec{\imath}+2 \vec{\jmath})$

$(-2 \vec{\imath}-5 \vec{\jmath}) \cdot(5 \vec{\imath}+2 \vec{\jmath})=\sqrt{(-2)^{2}+(-5)^{2}} \times \sqrt{5^{2}+2^{2}} \times \cos \theta$

$\text { since }\|a\|=\sqrt{x^{2}+y^{2}} \text { for } a=x \vec{\imath}+y \vec{\jmath}$

$\begin{array}{l}{-10-10=\sqrt{29} \times \sqrt{29} \times \cos \theta} \\\\ {-20=29 \times \cos \theta} \\\\ {\cos \theta=\frac{-20}{29}} \\\\ {\theta=\cos ^{-1} \frac{-20}{29}} \\\\ {\theta=133.60}\end{array}$

Hence, the angle between given two vectors is 134 degrees approximately.

3 0

3 years ago

A poster has an area of 5 square feet. what is its area in square inches?

Sedbober [7]

The answer is D. 1 sq ft = 1 ft x 1 ft = 12 in x 12 in 1 sq ft = 144 sq in 5 sq ft = 144 * 5 = 720 sq in.

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3 years ago

Edward started his hike at an elevation of 115 feet below sea level. Throughout the hike he ascended 3,200 feet and then descend

creativ13 [48]

Edward started his hike at an elevation of 115 feet below sea level. Throughout the hike he ascended 3,200 feet and then descended 676 feet. How much did his elevation change?

115+676=791

3200-791= 2409

his elevation changed by 2409 ft

5 0

3 years ago

Read 2 more answers

I need help fast I appreciate the help

Neko [114]

Answer:

3/5

Step-by-step explanation:

Sin is opp/hyp so it would be 30/50 in lowest form it would become 3/5