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3 years ago

the distance from a driveway to the closest house is 12,672 feet. How far is that in miles. (1 mile=5280 feet)

Mathematics

2 answers:

Effectus [21]3 years ago

8 0

Answer:

2.4

Step-by-step explanation:

12672/5280

Katyanochek1 [597]3 years ago

7 0

12,672ft/5280ft=2.4miles

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HURRYYYYYYYYY!! What is the equation of the quadratic function with a vertex at (2, 25) and an x-intercept at (7,0)?

tangare [24]

Answer:

$y=-(x-7)(x+3)$

which is none of the choices provided.

Are you sure the question is right or even the choices?

You can even write it as:

$y=-(x+3)(x-7)$ but this is still not a choice.

Step-by-step explanation:

The vertex form of a quadratic is $y=a(x-h)^2+k$ .

This is called vertex form because it gives you the vertex is $(h,k)$ .

We are given that $(h,k)=(2,25)$ which makes our equation:

$y=a(x-2)^2+25$ .

We can find the value of $a$ by plugging in the x-intercept (7,0) for $(x,y)$ into:

$y=a(x-2)^2+25$

$0=a(7-2)^2+25$

$0=a(5)^2+25$

Subtract 25 on both sides:

$-25=a(5)^2$

$-25=a(25)$

Divide both sides by 25:

$\frac{-25}{25}=a$

$-1=a$ .

So the equation for the quadratic is:

$y=-1(x-2)^2+25$

Let's put this into factored form since all the choices are in factored form.

This will require us to multiply the (x-2)(x-2) out:

$y=-1(x-2)(x-2)+25$

$y=-1(x^2-2x-2x+4)+25$

$y=-1(x^2-4x+4)+25$

$y=-x^2+4x-4+25$

$y=-x^2+4x+21$

Factor out -1:

$y=-(x^2-4x-21)$

WE need to find two numbers that multiply to be -21 and add to be -4:

$y=-(x-7)(x+3)$

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3 years ago

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vesna_86 [32]

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3 years ago

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aleksley [76]

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Step-by-step explanation:

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3 years ago

-(×+3)=-8+10× is what

Paladinen [302]

Answer: 5/11

Solution: x = 5/11

Step-by-step explanation:

Question: -(x+3)=-8+10x

Result -x-3=10x-8

Hope this help :)

Please give brainless

-(×+3)=-8+10× is a math equation with the solution of 5/11

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2 years ago

The largest number which divides 60 and 75, leaving remainders 8 and 10 respectively is? Please I need an answer with a full exp

Assoli18 [71]

Answer:

The largest number is 13

Step-by-step explanation:

Here, we want to find the largest number which divides 60 and 75 to leave remainders 8 and 10 respectively

What this means is that we are looking for numbers such that when we divide 60 by it, we get remainder 8 and when we divide 75 by it, we get remainder 10

For 60;

The number is 13 for 60

This is because, since we are looking at leaving remainder 8, that means the actual figure we are looking at is 60-8 = 52

13 is actually the biggest factor of 52 in this case

For 75;

we are looking at remainder 10; take this away from 75, that will be 75-10 = 65

Also the factor here is 13 because 13 * 5 = 65 and we are 10 units away from 75

4 0

2 years ago