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astra-53 [7]
3 years ago
5

How to do this problem because it's hard

Mathematics
1 answer:
Elenna [48]3 years ago
4 0
You will need to set up and solve 2 equations:
A) 3 Vans + 10 Buses = 379
B) 14Vans + 13 Buses = 624
Multiply equation A by -14
A) -42 Vans -140 Buses = -5,306  then Multiply equation B by 3
B) 42 Vans + 39 Buses = 1,872
Adding BOTH equations
-101 Buses = -3,434
Each Bus holds 34 Students

Putting this into equation A
A) 3 Vans + 10 Buses = 379
A) 3 Vans + 10 * 34 = 379
A) 3 Vans +340 = 379
A) 3 Vans = 39
Each van = 13 students




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Solve and check the equation<br> 5x+8=7x-4
Phantasy [73]
<h2>Answer:<em> X=6</em></h2>

Hope this is the answer you are looking for.. if it's wrong please letme know

6 0
3 years ago
Simplify -6.8+ (-2.71)
vova2212 [387]

Answer:

4.09

Step-by-step explanation

since negatives over power positive numbers

-6.8+(-2.71) - will simplify plus into minus

-6.8 - 2.71 - now just subtract

6.8-2.71=4.09

5 0
2 years ago
Use appropriate algebra and theorem 7.2.1 to find the given inverse laplace transform. (write your answer as a function of t.) ℒ
castortr0y [4]

We assume you want to find the inverse transform of s/(s^2 +3s -4). This can be written in partial fraction form as

(4/5)/(s+4) + (1/5)/(s-1)

which can be found in a table of transforms to be the transform of

(4/5)e^(-4t) + (1/5)e^t


_____

There are a number of ways to determine the partial fractions. They all start with factoring the denominator.

s^2 +3x -4 = (s+4)(s-1)


After that, you can postulate the final form and determine the values of the coefficients that make it so. For example:

A/(s+4) + B/(s-1) = ((A+B)s + (4B-A))/(s^2 +3x -4)


This gives rise to two equations:

(A+B) = 1

(4B-A) = 0

4 0
3 years ago
.
Llana [10]
The answer to your question is $720
6 0
3 years ago
Find the output, y, when the input,x, is 6.<br> y=
deff fn [24]

Answer:

y = 8

General Formulas and Concepts:

<u>Algebra I</u>

  • Reading a Cartesian Plane
  • Coordinates
  • Functions

Step-by-step explanation:

What the question is asking is for the y-value when the x-value is equal. According to the graph, when x = 6, y = 8. Therefore, y = 8.

8 0
3 years ago
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