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VLD [36.1K]
2 years ago
5

If a/b and c/d are rational expressions, then: a/b / c/d = a*b/c*d

Mathematics
1 answer:
Vaselesa [24]2 years ago
8 0

if a/b and c/d are rational expressions,a/b / c/d = a*b/c*d is false.

<h3> What is the definition of a fraction number?</h3>

A fraction number is a number that represents a portion of a larger number, where the larger number might be any integer. It has the shape of a numerator and a denominator.

The given rational expression is;

a/b and c/d

Given relation;

\rm \frac{\frac{a}{b}}{\frac{c}{d}}\\\\ \frac{a d}{bc}

When two fractions are divided the number got reversed and multiplied by the fraction.

Hence the given calculation is false.

To learn more about fraction numbers, refer to brainly.com/question/8602593.

#SPJ1

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7/2 inches by 3/2 inches?
miskamm [114]

Answer:

<u><em>5.25 inches or </em></u>5 \frac{1}{4}<u><em> inches</em></u>

Step-by-step explanation:

<u><em>I believe that the question is what do they multiply to..? If so, we start by </em></u><u><em>making them both in decimal form:</em></u>

<u><em>7 / 2 = 3.5</em></u>

<u><em>3 / 2 = 1.5</em></u>

<u><em>Now, we </em></u><u><em>multiply</em></u><u><em>:</em></u>

<u><em>3.5 * 1.5 = 5.25</em></u>

<u><em>If you want fraction form, we can turn .25 to 1/4.</em></u>

<u><em>Fraction form: </em></u>5 \frac{1}{4}

6 0
3 years ago
3x + 3y =15 and x = -3y -1
saul85 [17]

Answer:

  (x, y) = (8, -3)

Step-by-step explanation:

You can substitute for x in the first equation:

  3(-3y -1) +3y = 15

  -6y = 18 . . . . . add 3 and simplify

  y = -3 . . . . . . . divide by -6

  x = -3(-3) -1 = 8 . . . . find x using the second equation

The solution to this system of equations is (x, y) = (8, -3).

4 0
3 years ago
Find the value of sinA in the figure above.
Anit [1.1K]

Answer:

B

Step-by-step explanation:

Sin(A) = O/H

Sin(A) = 27/45

Sin(A) = 0.6

5 0
3 years ago
A Cat, sitting in the top of a tree, spots a dog and a Firefighter both on the flat ground below. From the cats point of view ,
dezoksy [38]
This is the concept of application of trigonometry;
The height of the tree will be given by:
tan theta=opposite/adjacent
theta=65
opposite=h
adjacent= 10
thus;
tan 65=h/10
h=10 tan 65
h=21.45 m

The distance between the dog and the man is x;
the distance of the man to the tree is (x+10) m
this will be given by:
tan 50= 21.45/(10+x)
getting the reciprocal of the expression we get;
1/tan 50=(10+x)/21.45
cross multiplying the above expression we get;
21.45=(10+x)tan 50
21.45=(10+x)1.2
21.45=12+1.2x
1.2x=21.45-12
1.2x=9.45
x=9.45/1.2
x=7.875
We conclude that the distance of the Firefighter and the dog is x=7.875 m



4 0
4 years ago
Read 2 more answers
Lydia's bank account had a balance of -$18.24. She deposited $30.50 in the account. What is
garri49 [273]
Answer: Lydia’s new balance would be $12.26.

Explanation:
Deposit means add so,
-18.24+30.50=12.26
Now Lydia will have $12.26 in the account.
6 0
3 years ago
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