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Olenka [21]
2 years ago
9

Please answer and quick I will mark u the most Brainly!!!! Fasttt pleaseee

Mathematics
2 answers:
soldier1979 [14.2K]2 years ago
6 0
I cant see the question .
motikmotik2 years ago
6 0

Answer:

answer what??????

Step-by-step explanation:

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Can someone plz help me with this one problem plzzzzz!!! I’m marking brainliest!!!
olya-2409 [2.1K]
I don’t know this sorry
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3 years ago
Is the sum of two rational numbers always rational
Pepsi [2]

Answer:

in short, Yes they are always rational.

here's why...

E.g. suppose \frac{c}{d} and \frac{a}{b} are fractions, that means that a,b,c,d are all integers, and b and d are not zero. finding the sum the numerator, and denominator would also have to be integers. the denominator of the sum can't be zero since the denominators of the fractions were not zero, and would give \frac{ad+bc}{bd} and since they are bound by addition (sum means addition) they must also be rational since eit would equal a bigger integer than initially had

Step-by-step explanation:

8 0
2 years ago
What does the word "isohyet" mean?
stepan [7]

Answer:

An isohyet is a line on a map which connects points that have the same amounts of precipitation in a given period or for a particular storm.

Step-by-step explanation:

5 0
2 years ago
Please answer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
mezya [45]

Answer:

D

Step-by-step explanation:

You have 2 5 12 13 right triangles.

x = 2 * 5

x = 10

4 0
3 years ago
Read 2 more answers
How many times does the graph of the function below interect or touch the x-axis? y=-2x^2+3x+5
Andrei [34K]

Answer:

Two times at (-1,0) and (2.5,0)

Step-by-step explanation:

When the graph intersects or touches x-axis, y is equal to 0

so y = -2x^2 + 3x + 5

=> 0 = -2x^2 + 3x + 5

The formula to solve a quadratic equation of the form ax^2 + bx + c = 0 is equal to x = [-b +/-√(b^2 - 4ac)]/2a

so a = -2

    b = 3

    c = 5

substitute in the formula

x = [-3 +/- √(3^2 - 4x-2x5)]/2(-2)

x = [-3 +/- √(9 + 40)]/(-4)

x = [-3 +/- 7]/(-4)

x1 = (-3 + 7)/(-4) = 4/-4 = -1

x2 = (-3 - 7)/(-4) = -10/-4 = 5/2 = 2.5

so the graph has two x-intercepts (-1,0) and (2.5,0), therefore it intersects x-axis two times

7 0
2 years ago
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