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rjkz [21]
3 years ago
5

A history teacher gives a 17 question True or false exam. In how many different ways can the test be answered if the possible an

swers are true or false or possibly to leave the answer blank?
Mathematics
1 answer:
monitta3 years ago
7 0

Answer:

Step-by-step explanation:

if it's only true or false there are 2¹⁷=131072 outcomes

if it's true, false, or blank there are 3¹⁷=129140163 outcomes

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Two families went to Rollercoaster World.
Alona [7]

Answer:

Children ticket cost $30 and adult ticket costs $40.

Step-by-step explanation:

Given that:

x = price of a child ticket

y = price of an adult ticket

According to given statement;

3x+2y=170     Eqn 1

4x+6y=360    Eqn 2

Multiplying Eqn 1 by 3

3(3x+2y=170)

9x+6y=510      Eqn 3

Subtracting Eqn 2 from Eqn 3

(9x+6y)-(4x+6y)=510-360

9x+6y-4x-6y=150

5x=150

Dividing both sides by 5

\frac{5x}{5}=\frac{150}{5}\\x=30

Putting x=30 in Eqn 1

3(30)+2y=170

90+2y=170

2y = 170-90

2y = 80

Dividing both sides by 2

\frac{2y}{2}=\frac{80}{2}\\y=40

Hence,

Children ticket cost $30 and adult ticket costs $40.

6 0
3 years ago
If A2 = A, which matrix is matrix A? [64 5 5 -4 –4. $4] 0.5 -0.57 -0.5 0.5 0.5 0.51 -0.5 0.5] (​
Alborosie

Answer:

what? are you asking

Step-by-step explanation:

5 0
3 years ago
Please help fast, I will mark BRAINLIEST 10. Find the rule. *
AURORKA [14]

Answer:

the answer to the question is y=x+2.

8 0
3 years ago
What do i supposed to do with this please ?
Oksana_A [137]

Answer:

he has 26 1/6 square meters left.

Step-by-step explanation:

first, i divided 78 1/2 by 3, because he got 2 3rds done with only 1/3 left.

when i did that i got 26 1/6.

i highly recommend photmath app. it makes equations like that easy to put together and explain easily.

5 0
3 years ago
What is the approximate measure of the length of the tennis court, x?
Romashka-Z-Leto [24]

Answer:

78.0 ft

Step-by-step explanation:

pythagoras theorem =

a² + b² = c²

a² + 36² = 85.9²

a² + 1296 = 7378.81

a² = 7378.81 - 1296

a² = 6082.81

a = √6082.81

a = 77.992....

so, a (rounded) = 78 ft :)

3 0
3 years ago
Read 2 more answers
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