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3 years ago

15

What is the meaning of the variable x in terms of the situation?

1 answer:

viktelen [127]3 years ago

4 0

It completely depends on the situation.

From everything we're given in the question, we
don't know anything about the situation yet.

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[[|help please|]] will give brainliest

Lera25 [3.4K]

Answer: 30%

Step-by-step explanation:

4 0

2 years ago

Someone please help me find the sum of these geometric series!! <br> Thank you so much

astraxan [27]

Sum of aritmetic sqeuqnece is
(n/2)(a1+an)
a1=first term
an=nth term
n=how many terms

so we gots
a1=3(1)-4=-1
a18=50
n=18
(18/2)(-1+50)
(9)(49)
441

other one
a1(1-r^(n+1))/(1-r)

2(1-2^(15+1))/(1-(1/4))
about 2 and 2/3, so closer to 3

4 0

3 years ago

Find the set of values of k for which the line y=kx-4 intersects the curve y=x²-2x at 2 distinct points?

Sonbull [250]

Answer:

$-6 < k < 2$

Step-by-step explanation:

Given

$y = x^2 - 2x$

$y =kx -4$

Required

Possible values of k

The general quadratic equation is:

$ax^2 + bx + c = 0$

Subtract $y = x^2 - 2x$ and $y =kx -4$

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

$0 = x^2 - 2x - kx +4$

Factorize:

$0 = x^2 +x(-2 - k) +4$

Rewrite as:

$x^2 +x(-2 - k) +4=0$

Compare the above equation to: $ax^2 + bx + c = 0$

$a = 1$

$b= -2-k$

$c =4$

For the equation to have two distinct solution, the following must be true:

$b^2 - 4ac > 0$

So, we have:

$(-2-k)^2 -4*1*4>0$

$(-2-k)^2 -16>0$

Expand

$4 +4k+k^2-16>0$

Rewrite as:

$k^2 + 4k - 16 + 4 >0$

$k^2 + 4k - 12 >0$

Expand

$k^2 + 6k-2k - 12 >0$

Factorize

$k(k + 6)-2(k + 6) >0$

Factor out k + 6

$(k -2)(k + 6) >0$

Split:

$k -2 > 0$ or $k + 6> 0$

So:

$k > 2$ or k $> -6$

To make the above inequality true, we set:

$k < 2$ or $k >-6$

So, the set of values of k is:

$-6 < k < 2$

3 0

3 years ago

A term for a geometric figure that is enclosed by a circle.

Verizon [17]

A geometric figure enclosed by a circle is called an inscribed figure.

6 0

3 years ago

Read 2 more answers

A canoe shop owner wants to order more life jackets, He records what size life jackets he sells on one particular day to determi

Serga [27]

Answer:A:30

Step-by-step explanation:

The number 30 occurs the most

5 0

3 years ago