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4 years ago

you are told that the sun pf another two whole numbers is 20 ans thair differnece is 15 is this possible

Mathematics

1 answer:

-Dominant- [34]4 years ago

3 0

This is not possible if both numbers are whole numbers.

The larger number would be

(20+15)/2 = 17.5

The smaller number would be

(20-15)/2=2.5

So they cannot be whole numbers.

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The axis of symmetry for the graph of the function f(x) =

lara [203]

Answer:

Step-by-step explanation:

$y = - x {}^{2} + bx + 10 \\ y = - (x {}^{2} - bx - 10) \\ y = -( (x - \frac{b}{2} ) {}^{2} - \frac{b {}^{2} }{4} - 10) \\ y = - (x - \frac{b}{2} ) {}^{2} + 10 + \frac{b {}^{2} }{4} \\ \\ therefore \: \frac{b}{2} = 6 \\ b = 12$

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3 years ago

The price of an item yesterday was $120. Today, the price rose to $294. Find the percentage increase.

Blizzard [7]

Answer:

145%.

Step-by-step explanation:

Given that the price of an item yesterday was $120, and today, the price rose to $294, in order to find the percentage increase, the following calculation has to be made:

120 = 100

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((294 x 100) / 120) = X

29,400 / 120 = X

245 = X

245 - 100 = 145

Therefore, the percentage increase of the product was of 145%.

5 0

3 years ago

A lines passes through the points (-4, 7) and (5, -8). What is the slope of the line?

Korvikt [17]

Answer:

Step-by-step explanation:

The formula to find the slope of a line is:

(y2 - y1) / (x2 - x1)

We can substitute the points (-4, 7) and (5, -8) to find the slope:

(-8 - 7) / (5 - (-4))

(-15) / (5 + 4)

(-15) / 9

This can be simplified to

- 5 / 3

which is option C

6 0

3 years ago

Find the perimeter of the following polygon. Be sure to include the correct unit in your answer.

slava [35]

Answer:

Step-by-step explanation:

All you got to do is add all of them together

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3 years ago

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Norma-Jean [14]

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4 years ago