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2 years ago

11

PLZ Answer these questions/Help

1 answer:

arlik [135]2 years ago

5 0

1. They are all round.
2.The kids got each other sick. They were contagious.
3. 15: 15, 30, 45
20: 20, 40, 60, 80
25: 25, 50, 75, 100
The multiples of five will either end in 0 or 5.

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Which equation could he have solved? Is it A or B

Artist 52 [7]

A or B ....it’s your choice

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2 years ago

At tire depot , a pair of new tires sells for $216. The managers special advertises the same tires at a rate of $380 for 4 tires

Fittoniya [83]

A pair of tires is $216, so at that rate 4 tires would be $432. The managers special is $380 so $432-$380=$52 savings for 4. $52\4=$13 savings per tire.

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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

PLEASE HELP OR ELSE MOM WILL BE REALLY MAD!!!!! Two trains, one going from Boston to New York and the other going from New York

Rufina [12.5K]

Answer:

140 mile

Step-by-step explanation:

$d_{1} +d_{2} =220\\2(2x-10+x)=220\\x=40\\d_{1}=2*(2*40-10)=140mile$

While x is the speed of the second train.

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2 years ago

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Pavel [41]

Answer: 20

explanation: simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers

3 0

2 years ago

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