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3 years ago

5x-y>4 what does y equal

Mathematics

1 answer:

sukhopar [10]3 years ago

8 0

Answer:

y < -4 + 5x

Step-by-step explanation:

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A) 5 x = -95 b) X (-2) = 70 c) + 10 = -18 d) +(-3) = 27

erastovalidia [21]

Answer:

t7654

Step-by-step explanation:

ssdfsdf

3 0

3 years ago

15 points!!! kinda rusty with triangles. scratch that. really rusty.

velikii [3]

Consider the attached figure. The height CD cuts the triangle exactly in half. This means that

$\overline{AD}=\overline{BD}=\dfrac{1}{2}\overline{AB}=10$

Moreover, since CD is the height of the triangle, we know that ACD is a right triangle. We know the hypothenuse AC to be 20 feet because it is a side of the triangle, and we just found out that AD is 10. We can use the pythagorean theorem to deduce

$\overline{CD}=\sqrt{\overline{AC}^2-\overline{AD}^2}=\sqrt{400-100}=\sqrt{300}$

So, the area is

$A=\dfrac{bh}{2}=\dfrac{\overline{AB}\cdot\overline{CD}}{2} = \dfrac{20\cdot\sqrt{300}}{2}=10\sqrt{300}\approx 173$

3 0

3 years ago

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(-9,7), (6,2) write an equation in point-slope form of the line that passes through the given points, then write the equation in

skelet666 [1.2K]

Answer:

y = (2 - 7) / (6 - (-9)) * (x - (-9)) + 7

y = -5 / (6 + 9) * (x + 9) + 7

y = -5 / 15 * (x + 9) + 7

y = -1/3 * (x + 9) + 7

y = -1/3 * x - 3 + 7

y = -1/3 * x + 4

5 0

4 years ago

What is the sum of the geometric series

lbvjy [14]

If $S$ denotes the sum of the first $n$ terms of a geometric series with first term $a$ and common ratio $r$ , then

$S=a+ar+ar^2+\cdots+ar^{n-3}+ar^{n-2}+ar^{n-1}$
$rS=ar+ar^2+ar^3+\cdots+ar^{n-2}+ar^{n-1}+ar^n$
$\implies S-rS=a+(ar-ar)+(ar^2-ar^2)+\cdots+(ar^{n-1}-ar^{n-1})-ar^n$
$\implies (1-r)S=a(1-r^n)$
$\implies S=a=\dfrac{1-r^n}{1-r}$

Using summation notation, you have

$S=\displaystyle\sum_{x=1}^nar^{x-1}=\sum_{x=0}^{n-1}ar^x=a\dfrac{1-r^n}{1-r}$

In this case, you have $a=2$ , $r=\dfrac12$ , and $n=16$ . So the value of the sum is

$\displaystyle\sum_{x=0}^{15}2\left(\frac14\right)^x=2\dfrac{1-\left(\frac14\right)^{16}}{1-\frac14}\approx2.67$

Rounded to the nearest whole number, the answer would be 3.

4 0

4 years ago

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The table below shows function d, which represents the distance of a car from its destination after driving for n hours.

Aleksandr-060686 [28]

Your answer is the first one because it starts at 690 and goes down by 65

8 0

4 years ago

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