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3 years ago

PLEASE ANSWER

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THIS IS A MATH PROBLEM ABOUT MATH.

Mathematics

2 answers:

Anton [14]3 years ago

7 0

67856.36 that’s the answer

Ierofanga [76]3 years ago

3 0

6,756.36

Is the answer to thing question hope this helps

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How do you decide whether substitution is the best method to solve a system in three variables?

Ivan

Select one equation and solve it for one of its variables.
In the other equation, substitute for the variable just solved.
Solve the new equation.
Substitute the value found into any equation involving both variables and solve for the other variable.

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3 years ago

Marcy wants $205 in her bank account. If she has $85 now and adds $10 per week, how many weeks will it take her to reach her goa

DIA [1.3K]

Answer:

^^1 week and 5 days

Explanation:

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3 years ago

Type your answer and then click or tap Done. Simplify -(x-2y) - y.

AlladinOne [14]

Answer:

Step-by-step explanation:

x(x-2y)-(y-x)2

Final result :

-y2

Step by step solution :

Step 1 :

Equation at the end of step 1 :

x • (x - 2y) - (y - x)2

Step 2 :

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Final result :

-y2

4 0

3 years ago

Read 2 more answers

If f(x)=3x-7, find f(x)=2

Arisa [49]

Answer:

x = 2

Step-by-step explanation:

8 0

3 years ago

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równanie zmiany prędkość autokaru poruszającego się po prostym odcinku szosy i rozpoczynającego hamowanie od szybkości 20m/s ma

Rasek [7]

Answer:

s = 22.5 m

Step-by-step explanation:

the equation for the speed change of a coach moving along a straight section of the road and starting braking at a speed of 20 m / s has the form v (t) = 25-5t. Using integral calculus, determine the coach's braking distance.

v (t) = 25 - 5 t

at t = 0 , v = 20 m/s

Let the distance is s.

$s =\int v(t) dt\\\\s =\int (25 - 5t)dt\\\\s= 25 t - 2.5 t^2 \\$

Let at t = t, the v = 20

So,

20 = 25 - 5 t

t = 1 s

So, s = 25 x 1 - 2.5 x 1 = 22.5 m

3 0

2 years ago