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3 years ago

It not c i know that for sure but i nee help

Mathematics

2 answers:

Elina [12.6K]3 years ago

6 0

Answer:

Graph A is the only function

Step-by-step explanation:

Vika [28.1K]3 years ago

5 0

Answer:

i think graph a

Step-by-step explanation:

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120% of x is equal to 78 what is x<br>

Elis [28]

9514 1404 393

Answer:

Step-by-step explanation:

The problem statement tells you ...

1.20x = 78

Dividing by the coefficient of x gives its value:

x = 78/1.20

x = 65

6 0

2 years ago

The estimated value of the integral from 0 to 2 of x cubed dx , using the trapezoidal rule with 4 trapezoids is

bulgar [2K]

The integral is approximated by the sum,

$\displaystyle\int_0^2f(x)\,\mathrm dx\approx\sum_{n=0}^4\frac12\times\frac{f(x_n)+f(x_{n+1})}2=\frac14\sum_{n=0}^3(f(x_n)+f(x_{n+1}))$

where $f(x)=x^3$ and $x_n=\dfrac12n$ , giving you

$\displaystyle\frac14\sum_{n=0}^3\bigg(\left(\frac n2\right)^3+\left(\frac{n+1}2\right)^3\bigg)$
$\displaystyle\frac1{32}\sum_{n=0}^3(n^3+(n+1)^3)$
$\displaystyle\frac1{32}\sum_{n=0}^3(2n^3+3n^2+3n+1)$

Faulhaber's formulas make short work of computing the sum. You have

$\displaystyle\sum_{n=0}^k1=k+1$
$\displaystyle\sum_{n=0}^kn=\frac{k(k+1)}2$
$\displaystyle\sum_{n=0}^kn^2=\frac{k(k+1)(2k+1)}6$
$\displaystyle\sum_{n=0}^kn^3=\frac{k^2(k+1)^2}4$

which gives

$\displaystyle\frac1{16}\sum_{n=0}^3n^3+\frac3{32}\sum_{n=0}^3n^2+\frac3{32}\sum_{n=0}^3n+\frac1{32}\sum_{n=0}^31$
$\displaystyle\frac{36}{16}+\frac{42}{32}+\frac{18}{32}+\frac4{32}$
$\implies\displaystyle\int_0^2x^3\,\mathrm dx\approx\frac{17}4=4.25$

4 0

3 years ago

Joes Ice cream palace offers 3 different cones, 7 different toppings and 12 different flavors of ice cream. How many ice cream c

Ostrovityanka [42]

The solution would be like this for this specific problem:

Given:

3 different cones

7 different toppings

12 different flavors of ice cream

3 different cones * 7 different toppings * 12 different flavors of ice cream = 252 ice cream cone combinations

So, 252 ice cream cone combinations can be ordered in Joes Ice Cream Palace.

3 0

3 years ago

If you want to rent an apartment for $625 plus 1 month deposit, how much do you pay upfront?

aniked [119]

Answer:

625$

Step-by-step explanation:

deposit is usually the amount of the rent for each month

4 0

3 years ago

Y=-x^2+2x+1 how do you get the vertex, and x intercept and the symmetry point to the y intercept

dsp73

In y=ax²+bx+c, the vertex is when x=-b/(2a),
the x intercept is the value of x when y=0, and the y intercept is the value of y when x=0
in this case, a=-1, b=2, so the vertex is when x=-2/[2*(-1)]=1
when x=1, y=-(1)²+2*1+1=2, so the vertex is (1,2)

when x=0, y=1, the x intercept is (0,1)
when y=0, -x²+2x+1=0, use the quadratic formula to find x: x=-1+√2, x=-1-√2
so the symmetry point the the y intercept is (-1+√2, 0) (-1-√2, 0)

3 0

3 years ago