Jillian’s school is selling tickets for a play. The tickets cost $10.50 for adults and $3.75 for students. The ticket sales for opening night totaled $2071.50. The equation 10.50a + 3.75b = 2071.50, where a is the number of adult tickets sold and b is the number of student tickets sold, can be used to find the number of adult and student tickets. If 82 students attended, how may adult tickets were sold?

Answers

Answer 1

Answer: 10.50a + 3.75b = 2071.50
82 x 3.75 = 307.50
2071.50 - 307.50 = 1764
1764/10.50 = 168
10.50(168) + 3.75(82) = 2071.50
1764 x 307.50 = 2071.50

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If x is a real number such that x³ = 64, then x² + √x =?

Answers

$x^3 = 64\n \nx=\sqrt[3]{64}\n \nx=4 \n \n \n x^2 + √( x )=4^2+√(4)=16+2 =18$

If x³=64
,x=∛64=4
x²=16
√x=4
x²+√x=16+2
⇒18

What is the simplest from of this expression? -n(-2n^2-8)+(-n)(-5n^2+6)

Answers

3n^3 - 14n

Hope this helps!

15. Radioactive nuclei are highly stable and emit radiation to becomeunstable.
TRUE
FALSE

Answers

The statement radioactive nuclei are highly stable and emit radiation to become unstable is FALSE.

To determine if the statement is true or false we need to know what radiactivity is

What is radioactivity?

Radioactivity is the spontaneous disintegration of unstable atomic nuclei to form stable more energetic nuclei with the emission of radiation.

Radioactivity includes the following

disintegration of a larger atomic nuclei to a smaller more stable nuclei
Emission of radiation

So, radioactive nuclei which are unstable emit radiation and become more stable.

So, the statement radioactive nuclei are highly stable and emit radiation to become unstable is FALSE.

Learn more about here:

brainly.com/question/25756215

Which of the following statements is always true?A. A parallelogram is a rectangle.
B. A square is a rhombus.
C. A rhombus is a square.
D. A rectangle is a square.

Answers

I think the correct answer from the choices listed above is option B. A square is a rhombus. A rhombus is defined as a quadrilateral with equal side lengths where the definition of a square can fit in. Hope this answers the question. Have a nice day.

The correct statement that is always true from the given options is:

B. A square is a rhombus.

A square is a special type of rhombus where all four sides are equal in length and all angles are right angles.

A rhombus, on the other hand, is a quadrilateral with all sides of equal length.

Therefore, every square can be classified as a rhombus, but not every rhombus is a square.

Hence the correct statement that is always true from the given options is:

B. A square is a rhombus.

Learn more about quadrilateral click;

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Which of the following ordered pairs represents the solution to the system given below? x − 4y = 7
5x + 9y = 6

Answers

x − 4y = 7
5x + 9y = 6

5x − 20y = 35 //1st * 5
5x + 9y = 6

5x +9y - 5x + 20y = 6 - 35 //2nd - 1st
5x + 9y = 6

29y=-29
5x=6-9y

y=-1 //1st : 29
5x=6-9*(-1)

y=-1
x=15:5 //2nd : 5

y=-1
x=3

check:
for x=3 and y=-1 there is:
x − 4y = 7 is 3 − 4*(-1) = 7 is 7=7 ok
5x + 9y = 6 is 15-9=6 is 6=6 ok

answer: (3;-1) represents the solution.

Answer:

It’s 3,-1

Step-by-step explanation:

You have to plug in the points u can use a calculator or work it by hand but I did it on the calculator and that’s what I got

The fountain contains 20 pennies and 9 dimes. A coin is randomly taken and not replaced. A second coin is randomly taken. What is the probability that both coins are pennies?

Answers

Well, the first coin has chance $(20)/(29)$ to be a penny. When it is a penny, the only valid case (the other case gives 0 for the multiplications later, so it is ignored) gives $(19)/(28)$ chance for the second one to be a penny. The result is $(20*19)/(29*28)$ , which is $(95)/(203)$ , or about 46.80% (rounded to the first 2 decimals)

Answer:

9 dimes

Step-by-step explanation:

th fountai contains more that wat u would think but u mist move

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