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insens350 [35]
3 years ago
12

How can proportional reasoning help solve a problem?

Mathematics
1 answer:
Anestetic [448]3 years ago
6 0
Answer: Proportional reasoning compares ratios to answer questions.
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In △ABC, m∠A=32°, m∠B=25°, and a=18. Find c to the nearest tenth.
olga55 [171]

Trig!!!-

We can use trig function to find the answer-

we know that tangent is opp/adjacent

Thus c=180-32-25=123 degrees and

tan 123=18/c

This c=34.7539008597 since it is tan 123=0.51792747158 and we use algebra to solve for c and it is 18/tan 123=c and then c=34.8 when we round to the nearest tenth

Vote my answer for the brainiest pls

6 0
3 years ago
Read 2 more answers
Find the perimeter of the following shape, rounded to the nearest tenth:
OLga [1]

Answer: the perimeter of the shape is 19.1

Step-by-step explanation:

To determine the length of each side of the quadrilateral, we would apply Pythagoras theorem which is expressed as

Hypotenuse² = opposite side² + adjacent side

For line AD,

AD² = 2² + 4² = 4 + 16 = 20

AD = √20 = 4.47

For line AB,

AB² = 1² + 5² = 1 + 25 = 26

AB = √26 = 5.1

For line BC,

BC² = 2² + 4² = 4 + 16 = 20

BC = √20 = 4.47

For line CD,

CD² = 1² + 5² = 1 + 25 = 26

CD = √26 = 5.1

The perimeter of a plane figure is the distance around the figure. Therefore

Perimeter = AB + AB + BC + CD

Perimeter = 4.47 + 5.1 + 4.47 + 5.1 =

19.1

6 0
3 years ago
If a Ferrari drove 300 kilometers in one and a half hours. How fast was the car going?
vfiekz [6]
V=s/t
s=300 km = 300000 m
t=1 h and 30 min = 5400 sec
v=300/1,5= 200 km/h
or
v=300000/5400=55,5 m/s
8 0
3 years ago
Express x3 + 4x2 – 45x in factored form.
Dafna1 [17]
A is the answer because of x is all the same
5 0
3 years ago
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A bank account has a beginning balance of $560.00. After 6 months, the balance in the account has increased to $572.60. What int
Licemer1 [7]
Interest = $572.60 - $560.00 = $12.60

$560 x 6i/12 = $12.60

i = ($12.60 x 12) / ($560 x 6) = 0.045%
7 0
3 years ago
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