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Rudiy27
3 years ago
6

Classify each square root as rational or irrational. √4√9 √12 √17 √20 √25

Mathematics
1 answer:
Sati [7]3 years ago
3 0

Answer:

√4 rational

√9 rational

√12 irrational

√17 irrational

√20 irrational

√25 rational

Step-by-step explanation:

2² = 4

3²=9

√12 = 2√3 ⇒ p²/q² = 3

p and q are prims (irreducible fraction), therefore has maximum common divisor 1, and belong to the Integers.

p>q

p²=3q² ⇒ p is multiple of 3

If p² is divisible for 3 and the MDC (p and q) is 1, p²=3 and q=1. But it is absurd, because 3 is not a perfect square.

the rest is tasted the same way, but it will take too long so I won't put ...

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A ratio is in its simplest form 7:9.<br>if its consequent is 117, find the antecedent​
a_sh-v [17]

Answer:

Let the income and saving rs7x and respectively 2x

then

2x=500

Step-by-step explanation:

3 0
2 years ago
326.59 rounded to 1 decimal place
vekshin1

Answer:

326.6

Step-by-step explanation:

6 0
3 years ago
Why do you divide by 60 after calculating the area of the trapezoid (to calculate the distance)? I got 900 but I don’t know why
Free_Kalibri [48]

Answer:

Step-by-step explanation:

What you are trying to do is a nice way to solve this problem. Without knowing any physics, you are using what math you know to get the answer. You are actually very close to being correct, and you are right. You do have to divide by 60.

Here's why and it is the one bit of physics you have to know.

The speed is km/hour. That word hour is the culprit. Your time is in minutes and you have to get it into hours. In physics, the units have to be consistent.

So ...

b1 = 19 minutes which is 19 min [1 hour / 60 minutes] = 19/60 = 0.31667 hour

b2 = 26 minutes which is 26 min [ 1 hour/60 minutes] =  26/60 = 0.4333 hour

h = 40 km/hour

Area = (0.31667 hour + 0.4333 hour)*40 km/hour /2

Area = 0.75 hour * 40 km/hr //2

Area = 15 km

6 0
3 years ago
Find the value of the expression ​
Karolina [17]

\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}

Actually Welcome to the Concept of the Arithmetic Operation.

====> 5(3+6) + 5*3/ 5(4-1)

=====> 5(9) + 15 / 5(3)

=====> 45+15 / 15

=====> 60/15

======> 4

answer is 4

4 0
2 years ago
Part B: The length of rod PR is adjusted to 17 feet. If width PQ remains the same, what is the approximate new height QR of the
Alenkinab [10]

Answer:

9.64ft

Step-by-step explanation:

Since the diagram tends to form...a right angled triangle....;

with PR = 17ft...,PQ = 14ft

then to calculate the length of QR

we use the pythagoras theorem...which is only applicable to right angled triangles

PR^2 = PQ^2 + QR^2

(17)^2 = (14)^2 + QR^2

where we make QR the subject of formula;

QR^2 = (17)^2 - (14)^2

QR = square root of( 289 - 196)

QR = square root of( 93)

;Therefore the length of QR = 9.64ft

5 0
2 years ago
Read 2 more answers
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