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4 years ago

How do I write this out to answer it?

Mathematics

1 answer:

madam [21]4 years ago

3 0

Put the given numbers where the variables are, then do the arithmetic.

$\dfrac{xy^2}{5}=\dfrac{3(-1)^2}{5}=\dfrac{3\cdot 1}{5}\\\\=\bf{\dfrac{3}{5}}$

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WILLL GIVE BRAINIEST!!!!!

V125BC [204]

Answer:

I think it's the first one if not put the last

PLS PUT ME BRIANIEST

Step-by-step explanation:

5 0

3 years ago

Find the focus of the parabola whose equation is y=1/8 x^2

Mama L [17]

Answer:

The focus is: $(0,2)$

Step-by-step explanation:

Given

$y = \frac{1}{8}x^2$

Required

Determine the focus

The focus of a parabola

$(x- h)^2 = 4p(y - k)$

is:

$(h,k+p)$

So, we have:

$y = \frac{1}{8}x^2$

Cross multiply

$8y = x^2$

Rewrite as:

$x^2 = 8y$

Rewrite as:

$(x - 0)^2 = 8(y - 0)$

Express 8 as 4 * 2

$(x - 0)^2 = 4 * 2(y - 0)$

By comparison with: $(x- h)^2 = 4p(y - k)$

$h = 0$ $p =2$ $k = 0$

So, the focus $(h,k+p)$ is:

$(h,k+p) = (0,0+2)$

$(h,k+p) = (0,2)$

7 0

3 years ago

The equation of line r is y = 3x − 7 Line s includes the point(6, -9)and is perpendicular to line What is the equation to find s

tiny-mole [99]

Answer:

y=-.3x-7

Step-by-step explanation:

So, if you want to find a line perpendicular to another line, you have to put a decimal in front, or make it a reciprocal. In this case, I put a decimal in front to make it both perpendicular, and cross through (6, -9). Nice.

Edit: Spelling

4 0

4 years ago

Hola pueden ayudar a=6cm b=8cm c?

Alexxandr [17]

Answer:

c=10cm

Step-by-step explanation:

a²+b²=c²

6²+8²=c²

36+64=c²

100=c²

10=c

6 0

2 years ago

What is the value of f(-2)? A: 183 B: 221 C: -217 D: -179

Fofino [41]

Answer:

C:-217

Step-by-step explanation:

f(-2)=0.5*(-2)^2+9.5*(-2)-200

=2-19-200

=-217

8 0

3 years ago