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Gnesinka [82]
3 years ago
10

Find the sum of the following fractions. Explain how you determined the equivalent fractions and simply the sum. 2/5 + 3/4 =​

Mathematics
1 answer:
butalik [34]3 years ago
8 0

Answer:

1 3/20

Explanation:

Find the lowest common denominator of both fractions, which is 20.

2/5 = x/20. Find the value of x and that is 8.

3/4 = y/20. Find the value of y and that is 15

Add 8/20 and 15/20 and that gives you 23/20. This is an improper fraction so divide 23 by 20, which is 1 3/20

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Answer:

I hope this helpfull.

Step-by-step explanation:

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8 0
2 years ago
True or false there are more rational numbers than irrational numbers?
koban [17]
True because rational numbers are countable, but the irrational numbers are uncountable.
4 0
3 years ago
Read 2 more answers
the line containing the altitude to the hypotenuse of a right triangle whose vertices are p(-1, 1), q(3, 5), and r(5, -5).
finlep [7]

The equation of the straight line is given by 5y-x=6

An equation can be used to describe a straight line drawn on the Cartesian Plane. These equations have a generic structure and can change based on the slope and where the line intersects the axes.

We will greatly simplify this issue by utilizing the fact that this triangle is specified as a right triangle. We would have had to establish the presence of a right angle if it had been presented as a general triangle.

The segment QR is the hypotenuse of the triangle.

Any side's altitude is located along a line that is perpendicular to that side. We are aware that the slopes of perpendicular lines are negative reciprocals, or:

Slope of line joining  Q(3, 5) and R(5, -5)

m=\frac{y_2-y_1}{x_2-x_1}

Hence slope is= -10/2= -5

Now we know that for two perpendicular line the slope of one line is the negative reciprocal of the other.

Slope of line perpendicular to QR=1/5

This line passes through P(-1,1)

Equation of the straight line that passes through (1,-1) and with a slope of 1/5 is given by:

(y-y_1)=m(x-x_1)\\

Substituting the values we get:

y-1=1/5(x+1)

or,5y-5=x+1

or,5y-x=6

Hence the equation of the required line is : 5y-x=6

To learn more about straight lines visit:

brainly.com/question/17757770

#SPJ4

8 0
2 years ago
Please help me out The equation 9(w + 7) = 27 solved in several steps below. For each step, choose the reason that best justifie
Vaselesa [24]
9w+63=27

27-63= -36

-36•/•9=-4

answer: -4=w

hope this helps
4 0
3 years ago
Which algebraic expression represents the phrase below? five times the sum of a number and eleven, divided by three times the su
Umnica [9.8K]
The phrase has two parts:

Five times the sum of a number and eleven, divided by three times the sum of the number and eight

Let the number be x. Five times the sum of a number and eleven means 5 multiplied to the sum of x and 11. In expression this will be written as:

5(x + 11)

Three times the sum of the number and eight means 3 multiplied to the sum of x and 8. In expression this will be written as:

3(x + 8)

So, the overall expression will be:

\frac{5(x+11)}{3(x+8)}
4 0
3 years ago
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