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3 years ago

8 + 5n = -72 Solve the equation.

Mathematics

2 answers:

HACTEHA [7]3 years ago

6 0

Ray Of Light [21]3 years ago

3 0

N is -16 5 times -16 equals -80 plus 8 equals -72

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.A square field has a side 30m. Find the cost of fencing its four sides at Rs. 10 per metre

Ratling [72]

Answer:

1,200

Step-by-step explanation:

So first we need to find the perimeter

$P=30+30+30+30\\\\P=120$

so it costs 10 per meter

$120\times 10=1,200$

7 0

3 years ago

The price of a television was reduced from 250 to 200 .by what percentage was the price of the television reduced

Tju [1.3M]

Answer:

20 percent.

Step-by-step explanation:

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3 years ago

Find m angle 1 and m angle 3 in the kite.

stepladder [879]

Answer:

m∠1=39°, m∠3=51°

Step-by-step explanation:

Angle 3 = 180-(39+90)

180-129=51

Angle 1 = 39 b/c of the corresponding angles.

6 0

3 years ago

What is the quadratic function f(x)=x^2+6x-2 In vertex form?

Yuliya22 [10]

Answer: Option D

$f(x)=(x+3)^2 -k$

Step-by-step explanation:

For a quadratic function of the form

$ax ^ 2 + bx + c$

The x coordinate of the vertice is:

$x =-\frac{b}{2a}$

In this case the function is:

$f(x)=x^2+6x-2\\\\$

$a=1\\b=6\\c=-2$

The x coordinate of the vertice is:

$x=-\frac{6}{2*1}\\\\x=-3$

The y coordinate of the vertice is:

$f(-3) = (-3)^2 +6(-3) -2\\\\f(-3)=-11$

The vertice is: (-3, -11)

The form e vertice for a quadratic equation is:

$f(x)=(x-h)^2 +k$

Where

the x coordinate of the vertice is h and the y coordinate of the vertice is k.

Then h=-3 and k =-11

Finally the equation $f(x)=x^2+6x-2\\\\$ in vertex form is:

$f(x)=(x+3)^2 -k$

6 0

3 years ago

Read 2 more answers

How to simplify this equation ?<br> (3xy) (9y)

Helen [10]

Answer:

27 xy^2

Step-by-step explanation:

(3xy) (9y)

Multiply

3*9 =27

xy*y = xy^2

Combine

27 xy^2

4 0

2 years ago

Read 2 more answers