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3 years ago

Increase £64 by 70%??????

1 answer:

8 0

I'm not sure if you used the euro sign accidentally or what but this is how to increase 64 by 70%

divide 64 by 10.
6.40
then multiply it by 7.
44.80
then add 44.8 to your original number. (64)
the answer is:
108.8

If you did put that sign there purposely and if it means something then I don't know if it matters or if this is right.

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(1 point) Use Euler's method with step size 0.25 to compute the approximate y-values y1, y2, y3, and y4 of the solution of the i

Ad libitum [116K]

Answer:

$y_1=4.75\\y_2=10.625\\y_3=22.5\\y_4=46.375$

Step-by-step explanation:

Formula to calculate yn using Euler method is as follows:

$x_{n+1}=x_n+h\\\\h=step\,\,size\\\\y_{n+1}=y_n+F(x_n,y_n)\\\\where\\\\y'=F(x,y)\,\, and\,\,y(x_o)=y_o$

Given that:

$y'=2+2x+4y\\\\x_o=1\,,\,y_o=2\,,\,h=0.25$

$F(x_o,y_o)=1+2(1)+4(2) =11\\\\y_1=y_o+hF(x_o,y_o)\\\\y_1=2+(0.25)(11)=4.75\\\\x_1=1+0.25=1.25\\\\F(x_1,y_1)=2+2(1.25)+4(4.75)= 23.5\\\\y_2=y_1+hF(x_1,y_1)\\\\y_2=4.75+(0.25)(23.5)=10.625\\\\x_2=1.25+.25=1.5\\\\f(x_2,y_2)=2+2(1.5)+4(10.625)=47.5\\\\y_3=y_2+h(F(x_2,y_2)\\\\y_3=10.625+(0.25)(47.5)=22.5\\\\x_3=1.5+0.25=1.75\\\\F(x_3,y_3)=2+2(1.75)+4(22.5)=95.5\\\\y_4=y_3+hF(x_3,y_3)\\\\y_4=22.5+0.25(95.5)=46.375$

8 0

4 years ago

Can you guys help please . i will give brainliest

maria [59]

Answer:

false it's not correct

8 0

3 years ago

What is another way to name 1/4

Eva8 [605]

Another name for 1/4 is a quarter

hope this helps

8 0

3 years ago

Read 2 more answers

Which of the quadratic functions has the narrowest graph?

charle [14.2K]

Answer:

$y=\frac{1}{8}x^2$

Step-by-step explanation:

A quadratic function has the formula ax² + bx + c

To determine if a graph will be narrow or wide, the leading coefficient, a, will be the factor that determines this
The greater the coefficient, the narrower the parabola
The lesser the coefficient, the wider the parabola

Here all of the functions are in the form ax²

In $y=\frac{1}{8}x^{2}$ , our "a" term is $\frac{1}{8}$
In y = -2x², our "a" term is -2
In y = -3x², our "a" term is -3
In $y=\frac{1}{3}x^{2}$ , our "a" term is $\frac{1}{3}$

We can eliminate the two functions with the negative coefficients because they are much smaller than the two functions with the fractions as coefficients, and will therefore open much wider.

We can now compare the two remaining functions, $y=\frac{1}{8}x^2$ and $y=\frac{1}{3}x^2$

Giving the two fractions common denominators would turn them into $y = \frac{3}{24}x^2$ and $y=\frac{8}{24} x^2$
The equation with the larger fraction will be the parabola that is the narrowest. In this case, it is the $y=\frac{8}{24} x^2$ .
Therefore, $y=\frac{1}{8}x^2$ will have the narrowest graph

7 0

3 years ago

Combining like term 6k+7k

Nadya [2.5K]

13k is the answer :)

8 0

3 years ago