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3 years ago

We know the following about the numbers a, b and c:

Mathematics

1 answer:

labwork [276]3 years ago

3 0

Step-by-step explanation:

(a + b)² = 9

(b + c)² = 25

(a + c)² = 81

Taking the square root:

a + b = ±3

b + c = ±5

a + c = ±9

By adding these three equations together and dividing both sides by 2, we get the value of a + b + c.

Possible combinations for a + b + c such that the sum is greater than or equal to 1 are:

a + b + c = (-3 + 5 + 9)/2 = 11/2

a + b + c = (3 − 5 + 9)/2 = 7/2

a + b + c = (3 + 5 + 9)/2 = 17/2

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Find the distance between the points (11, 4) and (10, 5). 1 2

Debora [2.8K]

Distance formula : d = sqrt (x2 - x1)^2 + (y2 - y1)^2
(11,4)(10,5)

d = sqrt (10 - 11)^2 + (5 - 4)^2
d = sqrt (-1^2) + (1^2)
d = sqrt (1 + 1)
d = sqrt 2
d = 1.41 <===

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3 years ago

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9^y-3=8<br><br> JUST DO IT!<br> PLZ...

aleksley [76]

Hello My Dear Friend!

$9^y-3=8$ <span>
We move all terms to the left:
</span> $9^y-3-(8)=0$ <span>
We add all the numbers together, and all the variables
</span> $9^y-11=0$ <span>
We move all terms containing y to the left, all other terms to the right
</span> $9^y=11$
$y=11/1$
$y=11$

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3 years ago

Kid got 50 things of ravioli. He puts 30 rats in his ravioli. What is the percentage of ravioli that doesn't have rats in it com

GREYUIT [131]

Answer:

60% to 40%

Step-by-step explanation:

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3 years ago

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Need help with Math (Quadratic)

BaLLatris [955]

Answer:

f(x) = 2(x -3)² +5 or f(x) = 2x² -12x +23

Step-by-step explanation:

The equation of a quadratic is easily written in vertex form when the coordinates of the vertex are given. Here, the point one horizontal unit from the vertex is 2 vertical units higher, indicating the vertical scale factor is +2.

<h3>vertex form</h3>

The vertex form equation for a parabola is ...

f(x) = a(x -h)² +k . . . . . . vertex (h, k); vertical scale factor 'a'

<h3>equation</h3>

For vertex (h, k) = (3, 5) and vertical scale factor a=2, the vertex form equation of the parabola is ...

f(x) = 2(x -3)² +5 . . . . . vertex form equation

Expanded to standard form, this is ...

f(x) = 2(x² -6x +9) +5

f(x) = 2x² -12x +23 . . . . . standard form equation

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2 years ago

Find p+q, given that (q+4)(p+3)-(q+2)(p+1)=44.

Fofino [41]

Q = -p + 17
or
p = -q + 17
Not sure if this is correct

5 0

3 years ago