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Zepler [3.9K]
3 years ago
10

Please help me quickly !!

Mathematics
1 answer:
Fittoniya [83]3 years ago
4 0

Answer:

1. multiply by 4/3

2. add 1.72

Step-by-step explanation:

1 you are cancelling out part of the first side making it x-1.72

2. adding 1.72 makes gets x by itself

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The cosine rule calculate tha angle of r 7.2 3,7 5.2
Leya [2.2K]

Given:

Consider the below figure attached with this question.

To find:

The measure of angle r by using the cosine rule.

Solution:

According to Law of Cosine,

a^2=b^2+c^2-2bc\cos A

Using the Law of Cosine, we get

(7.2)^2=(3.7)^2+(5.2)^2-2(3.7)(5.2)\cos r

51.84=13.69+27.04-38.48\cos r

51.84=40.73-38.48\cos r

51.84-40.73=-38.48\cos r

On further simplification, we get

11.11=-38.48\cos r

\dfrac{11.11}{-38.48}=\cos r

-0.2887=\cos r

\cos^{-1}(-0.2887)=r

106.780143=r

r\approx 106.78

Therefore, the measure of angle r is 106.78 degrees.

7 0
3 years ago
S+1/4s=-6-3/2<br> provide your answer
Ilya [14]

Answer:

  s = -6

Step-by-step explanation:

Combining terms, we get ...

  (5/4)s = -15/2

Multiplying by 4/5 gives ...

  s = (4/5)(-15/2)

  s = -6

8 0
4 years ago
a rectangle is 5 feet longer than it is wide. the perimeter of the rectangle is 34 feet. what is the length of the rectangle?
DochEvi [55]
The length is 11 feet and the width is  7 feet long 
3 0
3 years ago
Read 2 more answers
Why is mental addition and subtraction important when you learn more difficult concept
Alex Ar [27]
It is important so you can be more fluent or faster in knowing bigger problems
7 0
4 years ago
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Beginning drivers soon learn that bringing an automobile to a stop requires greater distances for higher speeds. A formula that
BaLLatris [955]

The formula for the stopping distance in feet is

d=1.1v+0.055v^2

where v = Speed of the car in miles per hour.

The stopping distance for the car traveling at 15 mph is

d=1.1\times 15+0.055\times 15^2\\\Rightarrow d=28.875\approx 29\ \text{feet}

The stopping distance for the auto traveling at 15 mph is 29\ \text{feet}.

The stopping distance for the car traveling at 30 mph is

d=1.1\times 30+0.055\times 30^2\\\Rightarrow d=82.5\approx 83\ \text{feet}

The stopping distance for the auto traveling at 30 mph is 83\ \text{feet}.

Learn more:

brainly.com/question/19572178

brainly.com/question/24171613

4 0
3 years ago
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