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3 years ago

What is the value of x? (13x + 3)º (4x + 7)

Mathematics

1 answer:

stealth61 [152]3 years ago

3 0

Answer:

Step-by-step explanation:

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30 POINTS Alex runs 2/3 of a mile each day how many days does he need to run before he has to run a whole number of miles

kolezko [41]

Two days and he would’ve ran 1 and 1/3

6 0

3 years ago

What does rename 780,000 = 78 mean

marysya [2.9K]

78 is the significant figure because in maths 0's are not considered significant. Read more into significant figures to help you out.

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2 years ago

an electric pole of height 25 m casts a shadow of 20 m.find the height of a tree, if it casts a shadow of 12 m under similar con

ikadub [295]

Answer:

9.6

Step-by-step explanation:

20 divided by 25 = 0.8

Then, 0.8 times 12 = 9.6

I bet that helped! :D

6 0

2 years ago

Find the solution of the given initial value problems in explicit form. Determine the interval where the solutions are defined.

natali 33 [55]

Answer:

The solution of the given initial value problems in explicit form is $y=x-x^2-2$ and the solutions are defined for all real numbers.

Step-by-step explanation:

The given differential equation is

$y'=1-2x$

It can be written as

$\frac{dy}{dx}=1-2x$

Use variable separable method to solve this differential equation.

$dy=(1-2x)dx$

Integrate both the sides.

$\int dy=\int (1-2x)dx$

$y=x-2(\frac{x^2}{2})+C$ $[\because \int x^n=\frac{x^{n+1}}{n+1}]$

$y=x-x^2+C$ ... (1)

It is given that y(1) = -2. Substitute x=1 and y=-2 to find the value of C.

$-2=1-(1)^2+C$

$-2=1-1+C$

$-2=C$

The value of C is -2. Substitute C=-2 in equation (1).

$y=x-x^2-2$

Therefore the solution of the given initial value problems in explicit form is $y=x-x^2-2$ .

The solution is quadratic function, so it is defined for all real values.

Therefore the solutions are defined for all real numbers.

4 0

2 years ago

Hamburger costs $1.49 for 1/2 pound. How much would the hamburger cost for a whole pound?

tatuchka [14]

Answer:$2.98

Step-by-step explanation:

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2 years ago