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2 years ago

Answer this please

Mathematics

1 answer:

kati45 [8]2 years ago

5 0

Answer5 times 6=30 divide bc its a triangle the answer is 15

Step-by-step explanation:

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Side c is the hypotenuse. Sides a and b are the legs. 6. b = 6 yd, c = 4 yd. Find the missing side.

balandron [24]

Answer:

2.6666

Step-by-step explanation:

hypotenuse is c^2 so you square 4 to get 16 and then you divide it by 6 to 2.666 so that is the answer for the other leg

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

A student plays a total of 20

Cloud [144]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Find the height of the triangle if the area is 36 m 2

n200080 [17]

Answer:

Area=1/2bh

Given area of 36m^2

1/2(x)(x-1)=36

Multiply both sides by 2 to remove deminator

(x)(x-1)=72

X^2-x=72

X^2-x-72=0 then factor

(x-9)(x+8)=0

X=9,-8 however since area must be positive, take the absolute value of 8

1/2(9m*8m)=36m^2

3 0

3 years ago

Write 4x2 + 16x - 9 in vertex form. Write 5x2 - 10x + 4 in vertex form.

Marizza181 [45]

Hi king,

Write $4x^{2} + 16x - 9$ in vertex form:

f(x)= $4x^{2} + 16x - 9$

f(x)= $4(x+2)^{2} -25$

Write $5x^{2} - 10x + 4$ in vertex form:

g(x)= $5x^{2} - 10x + 4$

g(x)= $5(x-1)^{2} -1$

Have a great day.

6 0

3 years ago

Answer this please ​

Answer this please