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3 years ago

In a dass of 32 students there are 11 males. Find the ratio of males to females

Mathematics

1 answer:

Levart [38]3 years ago

3 0

$\huge{\boxed{11:21}}$

First, find the number of females in the class. $32-11=21$

Then, just write the ratio. $\text{11 males:21 females}=\boxed{11:21}$

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What is the solution for the quadratic equation?

N76 [4]

B since you can rewrite it as (2x+7)(x-4)=0 and you can solve it and you get B

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2 years ago

A flagpole casts a shadow 10ft long, a girl standing next to the flagpole casts a shadow 2.5ft long if the girl is 5ft tall how

goldenfox [79]

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2 years ago

Plz answer this asap first answer gets brainliest

Korvikt [17]

Answer:

g(x) has the greater max: 11 versus 6

Step-by-step explanation:

One can readily discern the max value of the graph; it is 6 and occurs at x =1.

Regarding the function g(x) = (-1/2)x^2 + 4x + 3: Find the vertex, which also represents the max value:

Here the coefficients are a = -1/2, b = 4 and c = 3, so that the axis of symmetry is:

x = -b/(2a), which here is x = -4 / ( 2·[-1/2] ) = -4 / (-1) = 4

At x = 4, the function (y) value is

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g(4) = -8 + 16 + 3, or 11

This is greater than the max value of the graphed function.

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3 years ago

Select all the reasons why random samples are preferred over other sampling methods. A random sample is likely to give you a sam

Shalnov [3]

Answer:

The following statement below are reasons why random sampling are preferred over other sampling:

O. A random sample is a fair way to select a sample because each member of the population has an equal chance of being selected.

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Step-by-step explanation:

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2 years ago

What is the equation of the quadratic graph with a focus of (8, −8) and a directrix of y = −6?

sp2606 [1]

Answer:

$y=-\frac{223}{28}(x-8)^2-7$

Step-by-step explanation:

we are given a quadratic equation

we know that quadratic equation is same as equation of parabola

so, we can use formula

$y=a(x-h)^2+k$

Focus is

$(h,k+\frac{1}{4a} )$

now, we can compare it with given focus

=(8,-8)

we get

$h=8$

$k+\frac{1}{4a}=-8$

Directrix is

$y=k-\frac{1}{4a}$

we are given directrix =-6

$k-\frac{1}{4a}=-6$

we got two equations as

$k+\frac{1}{4a}=-8$

$k-\frac{1}{4a}=-6$

now, we can add both equations

and we get

$k+\frac{1}{4a}+k-\frac{1}{4a}=-8-6$

$2k=-8-6$

$2k=-14$

$k=-7$

now, we can find 'a'

$k+\frac{1}{4\times -7}=-8$

$k=-\frac{223}{28}$

now, we can plug back all values

and we get

So, equation of parabola is

$y=-\frac{223}{28}(x-8)^2-7$

3 0

2 years ago