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Vesna [10]
3 years ago
15

5x-6y=-25 and 4x-3y+20=0 How many solutions does the system have?

Mathematics
1 answer:
natta225 [31]3 years ago
8 0
It has only 2 solutions
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3 years ago
What is the answer to 20(x + 1) = 200
patriot [66]

Answer:

x = 9

Step-by-step explanation:

20x + 20 = 200

-20 -20

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Please help with geometry!! Thank you so much <3
Luda [366]

Since the two triangles are proportional, there is a scale for going from one triangle to the other

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3 years ago
M is a degree 3 polynomial with m ( 0 ) = 53.12 and zeros − 4 and 4 i . Find an equation for m with only real coefficients (i.E.
Nitella [24]

Answer:

Therefore the required polynomial is

M(x)=0.83(x³+4x²+16x+64)

Step-by-step explanation:

Given that M is a polynomial of degree 3.

So, it has three zeros.

Let the polynomial be

M(x) =a(x-p)(x-q)(x-r)

The two zeros of the polynomial are -4 and 4i.

Since 4i is a complex number. Then the conjugate of 4i is also a zero of the polynomial i.e -4i.

Then,

M(x)= a{x-(-4)}(x-4i){x-(-4i)}

      =a(x+4)(x-4i)(x+4i)

      =a(x+4){x²-(4i)²}      [ applying the formula (a+b)(a-b)=a²-b²]

      =a(x+4)(x²-16i²)

      =a(x+4)(x²+16)      [∵i² = -1]

      =a(x³+4x²+16x+64)

Again given that M(0)= 53.12 . Putting x=0 in the polynomial

53.12 =a(0+4.0+16.0+64)

\Rightarrow a = \frac{53.12}{64}

      =0.83

Therefore the required polynomial is

M(x)=0.83(x³+4x²+16x+64)

5 0
3 years ago
If you know it please tell me it would help a lot
geniusboy [140]
7n \le 21

Divide both sides by 7.

n \le 3

n must be less than or equal to 3. n can be 3 or any number under 3.

For example, n can be 1, 2, 3.
5 0
3 years ago
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