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Zanzabum
3 years ago
13

What are a x and a y that have a difference of 17 and have a sum of 9

Mathematics
1 answer:
vichka [17]3 years ago
6 0

Answer:

y=-4, x=13

Step-by-step explanation:

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A board measuring 7.2 feet must be cut into three equal pieces
Softa [21]
Each piece would be about 2.4 feet long. You find this out by dividing 7.2 and 3 which comes out to 2.4
7 0
3 years ago
The perimeter of the cover of a math textbook is 34 inches. if the width of the cover is 7 inches, what is the length of the cov
Sauron [17]
The length would be 10 inches.
to find perimeter, you add length+length+width+width.
since both widths and both lengths have to be the same, u add the width 2 times or 7+7=14.
next u subtract 14 from 34 or 34-14=20. 
since u still have 2 lengths that are equal, u divide 20 by 2 or 20/2=10

hope this helps! :)
7 0
3 years ago
The height of a ball thrown vertically upward from a rooftop is modelled by h(t)= -4.8t^2 + 19.9t +55.3 where h (t) is the balls
nikitadnepr [17]

By applying the <em>quadratic</em> formula and discriminant of the <em>quadratic</em> formula, we find that the <em>maximum</em> height of the ball is equal to 75.926 meters.

<h3>How to determine the maximum height of the ball</h3>

Herein we have a <em>quadratic</em> equation that models the height of a ball in time and the <em>maximum</em> height represents the vertex of the parabola, hence we must use the <em>quadratic</em> formula for the following expression:

- 4.8 · t² + 19.9 · t + (55.3 - h) = 0

The height of the ball is a maximum when the discriminant is equal to zero:

19.9² - 4 · (- 4.8) · (55.3 - h) = 0

396.01 + 19.2 · (55.3 - h) = 0

19.2 · (55.3 - h) = -396.01

55.3 - h = -20.626

h = 55.3 + 20.626

h = 75.926 m

By applying the <em>quadratic</em> formula and discriminant of the <em>quadratic</em> formula, we find that the <em>maximum</em> height of the ball is equal to 75.926 meters.

To learn more on quadratic equations: brainly.com/question/17177510

#SPJ1

6 0
1 year ago
A bag contains 4 gold marbles, 5 silver marbles, and 29 black marbles. Someone offers to play this game: You randomly select one
kkurt [141]

Answer:

Step-by-step explanation:

you have a 29 of 38 chance at lossing

5 0
3 years ago
What is the probability of getting a tails, vowel and an even number?
Zinaida [17]

Answer:

\frac{1}{15}

This is assuming the die is from 1 - 5

Step-by-step explanation:

Tails: 0.5

Vowel: \frac{1}{3}

Even number: \frac{2}{5}

\frac{1}{2}* \frac{1}{3} *\frac{2}{5} =\frac{2}{30}=\frac{1}{15}

8 0
3 years ago
Read 2 more answers
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