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zheka24 [161]
3 years ago
12

What is the slope of line segment jk

Mathematics
1 answer:
pshichka [43]3 years ago
7 0
Rise/run = -5/9

the answer is -5/9
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Simple: get the Equation
ivanzaharov [21]

Answer:

y=10x+10

Step-by-step explanation:

7 0
3 years ago
Find the approximate area between the curve f(x) = -4x² + 32x and on the x-axis on the interval [0,8] using 4 rectangles. Use th
Doss [256]

Split up the interval [0, 8] into 4 equally spaced subintervals:

[0, 2], [2, 4], [4, 6], [6, 8]

Take the right endpoints, which form the arithmetic sequence

r_i=2+\dfrac{8-0}4(i-1)=2i

where 1 ≤ <em>i</em> ≤ 4.

Find the values of the function at these endpoints:

f(r_i)=-4{r_i}^2+32r_i=-16i^2+64i

The area is given approximately by the Riemann sum,

\displaystyle\int_0^8f(x)\,\mathrm dx\approx\sum_{i=1}^4f(r_i)\Delta x_i

where \Delta x_i=\frac{8-0}4=2; so the area is approximately

\displaystyle2\sum_{i=1}^4(-16i^2+64i)=-32\sum_{i=1}^4i^2+128\sum_{i=1}^4i=-32\cdot\frac{4\cdot5\cdot9}6+128\cdot\frac{4\cdot5}2=\boxed{320}

where we use the formulas,

\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2

\displaystyle\sum_{i=1}^ni^2=\frac{n(n+1)(2n+1)}6

6 0
3 years ago
ILLL MAKE BRAINLIEST PLSS HELLPPP. Given the function f (2) = 3(x - 1)² + 2 , which of the following statements is true
nikdorinn [45]

Answer:

I'll choose the first one but don't know the right one

6 0
2 years ago
Help help help help math math math math help
Nitella [24]
X = 14

because 7 (14) + 9 is equal to 9 (14) - 19
8 0
2 years ago
Which equation could be used to solve for the length of side c, given a = 5, b = 12, and C = 72°?
dolphi86 [110]

Answer:

law of cosines

c^2=(5)^2+(12)^2-2(5)(12)cos72

7 0
3 years ago
Read 2 more answers
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