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Korolek [52]
3 years ago
15

-3x^2 + 4xy - y^3 x = 5 and Y = 1

Mathematics
1 answer:
Marrrta [24]3 years ago
5 0

Answer: -56

Step:

Plug in the numbers into the equation

-3(5)² + 4(5)(1)-1³

Any expression multiplied by 1 remains the same. Evaultuate the power.

-3×25+4×5-1³

Multiply the numbers. 1 raised to any power equals 1.

-3×25+20-1

Multiply the numbers

-75+20-1

Calcualte the sum or difference and you get -56.

Hope this helpsʕ•ᴥ•ʔ

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The length of a diagonal of a square is 7.5 mm. Find the area of the square.
dexar [7]
By Pythagoreans' theorem,

7.5² = l² × b²
56.25 = l² × b²

Since l = b
56.25 ÷ 2
= l²/b²
= 28.125 mm

∴ l = √28.125
= 5.3033 mm

Area of square
= √28.125 × √28.125
= 28.125 mm²
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7 0
3 years ago
Write 2/15 as a decimal.
Cloud [144]
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you can use this formula:
\frac{2}{15} = \frac{x}{10}

now let's multiply both sides by 10:
\frac{20}{15} = x
and simplyfy:
(by dividing the first fraction's elements by 5)
\frac{4}{3} = x

change improper fraction into a mixed number
1\frac{1}{3} = x

and 1 over 3 is 0.33333...

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5 0
3 years ago
Two functions are given below: f(x) and h(x). State the axis of symmetry for each function and explain how to find it.
andrew-mc [135]

Answer:

f(x):

x =  - 4

g(x)

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Step-by-step explanation:

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f(x) = a {(x - h)}^{2}  + k

The equation of the axis of symmetry is

x = h

The given function is

f(x) = 3 {(x + 4)}^{2}  + 1

We can see that h=-4

Hence the equation of axis of symmetry is

x =  - 4

From the graph, the axis of symmetry of h(x) is the vertical line that divides the parabola into two congruent halves.

This line is

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4 0
3 years ago
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GarryVolchara [31]

Answer:

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Step-by-step explanation:

Always true.

8 0
3 years ago
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raketka [301]

Answer:

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Step-by-step explanation:

1+2(x+2)

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2x+5

4 0
3 years ago
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