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Nikitich [7]
3 years ago
15

Mrs.Hines has 40 ballons for a party.She has 12 more balloons than she had for her last party.How many balloons did she have las

t party? Is there a different equation you can write to show this problem? Explain
Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
6 0

Answer: 28

Step-by-step explanation:

Let the number of balloons that she had last party be represented by x.

Since Mrs.Hines has 40 ballons for a party which was 12 more balloons than she had for her last party. The number of ballons had last party will be formed into an equation as:

x + 12 = 40

Collect like terms

x = 40 - 12

x = 28

She had 28 balloons last year

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Lissette's age is 3 years less than twice the age of her sister Francesca. Lissette is 13. Write an equation that can be used to
Katen [24]
 let  L be <span>Lissette's age

and F   </span><span>Francesca age 

2 F - 3 = 13 

2F= 16  

F = 16/2 =8

</span>
3 0
3 years ago
Write the given second order equation as its equivalent system of first order equations
Lilit [14]

The second-order equation as its equivalent system of first-order equations is

\left[\begin{array}{ccc}u(1)\\\\v(1)\end{array}\right] = \left[\begin{array}{ccc}7.5\\\\9\end{array}\right]

An equivalent system that has the identical answer is known as an equivalent structure. Given a gadget of two equations, we can produce an equal system by way of replacing one equation by means of the sum of the 2 equations, or by way of changing an equation by means of a couple of of itself.

Systems of linear equations are equivalent if and handiest in the event that they have an equal set of solutions. In other phrases, two systems are equal if and only if each answer of one in all of them is likewise a solution of the opposite.

In the structures sciences, a machine equivalent system is the conduct of a parameter or thing of a machine in a way just like a parameter or component of a distinctive system. Similarity means that mathematically the parameters and additives will be indistinguishable from each different.

Taking v = u, we have:

u" + 4u' + 6u = 4sin(3t)

--> v' + 4v + 6u = 4sin(3t)

So the system of equations is:

u' = 0u + 1v

v' = -6u - 4v + 4sin(3t)

So we can write it as:

u(1) = 7.5

v(1) = u'(1) = 9

So the initial condition matrix is:

\left[\begin{array}{ccc}u(1)\\\\v(1)\end{array}\right] = \left[\begin{array}{ccc}7.5\\\\9\end{array}\right]

Learn  more about the equivalent system here brainly.com/question/14878855

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3 0
2 years ago
Write a ratio to compare the amounts below. Simplify
frutty [35]

Answer:

6/25

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Merry is making an abstract triangular collage for the wall. She has 14 feet of edging to go around the collage. If the longest
xxTIMURxx [149]

Answer:

The length of each side of the triangular collage:

a = smallest side = 3 feet

b = other side(second side) = 5 feet

c = Longest side = 6 feet

Step-by-step explanation:

She has 14 feet of edging to go around the collage.

14 feet = Perimeter of the triangle

The Perimeter of a Triangle = a + b + c where

a = smallest side

b = other side(second side)

c = Longest side

From the question, we are told that:

If the longest side is twice the smallest

c = 2a

The other side is four less than three times the smallest,

The other side = b

b = 3 × a - 4

b = 3a - 4

Hence,

P = a + b + c

14 = a + 3a - 4 + 2a

14 = a + 3a + 2a -4

14 = 6a - 4

Collect like terms

14 + 4 = 6a

18 = 6a

a = 18/6

a = 3ft

Therefore the smallest side = 3

The Longest side(c) = 2a

c = 2 × 3

c = 6ft

The other side(b) = 3a - 4

= 3(3) - 4

= 9 - 4

= 5 feet.

Therefore, the length of each side of the triangular collage:

a = smallest side = 3 feet

b = other side(second side) = 5 feet

c = Longest side = 6 feet

6 0
4 years ago
. Erin deposited $1,300 into a savings account that earns6% simple interest for 3 years.
SSSSS [86.1K]

The simple interest formula is:

A = P(1 + rt)

where A is the final amount, P is the principal, r is the annual interest rate (as a decimal) and t is time in years.

Substituting with P = 1,300, r = 0.06 and t = 3, we get:

A = 1,300(1 + 0.06*3)

A = 1,300*1.18

A = 1,534

The final amount will be $1,534

5 0
1 year ago
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