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My name is Ann [436]
3 years ago
10

Wacky Wizards offers beginner Advanced magic classes. the beginner costs 6 more than half the cost of the advanced class. Last w

eek they taught 7 beginner classes and 11 advanced classes and earned $390. Write a system that represents the cost of the beginner class, b and the cost od advanced class, a
Mathematics
2 answers:
ExtremeBDS [4]3 years ago
7 0

Answer:

if you’re looking for a equation it could be “ 24c + 15 = 687 “Step-by-step explanation:

Vikki [24]3 years ago
6 0

Answer:

47

Step-by-step explanation:

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No one helped last time so help please right one will get brainliest 15 points!
Akimi4 [234]

Answer:

27/10

2.7

Step-by-step explanation:

im not sure if that is the answer but that what i got

hope it helped

5 0
3 years ago
Can someone help me find the perimeter please
vichka [17]
Ans is 392 mm and approx 400mm as perimeter of semi circle is pi r which is 22/7*16 + 40 mm which is the total of the two side of the triangle given.
I hope this will help you
6 0
3 years ago
Surveys indicate that 5% of the students who took the SATs had enrolled in an SAT prep course. 30% of the SAT prep students were
zloy xaker [14]

Answer:

The required probability is 0.927

Step-by-step explanation:

Consider the provided information.

Surveys indicate that 5% of the students who took the SATs had enrolled in an SAT prep course.

That means 95% of students didn't enrolled in SAT prep course.

Let P(SAT) represents the enrolled in SAT prep course.

P(SAT)=0.05 and P(not SAT) = 0.95

30% of the SAT prep students were admitted to their first choice college, as were 20% of the other students.

P(F) represents the first choice college.

The probability he didn't take an SAT prep course is:

P[\text{not SAT} |P(F)]=\dfrac{P(\text{not SAT})\cap P(F) }{P(F)}

Substitute the respective values.

P[\text{not SAT} |P(F)]=\dfrac{0.95\times0.20 }{0.05\times0.30+0.95\times0.20}

P[\text{not SAT} |P(F)]\approx0.927

Hence, the required probability is 0.927

6 0
3 years ago
A circle has a circumference of 50.2450.24 units. What is the radius of the circle?
Roman55 [17]

The formula for circumference is 2 x PI x r

Using the circumference we can find the radius:

50.24 = 2 x PI x r

Multiply 2 by PI:

2 x 3.14 = 6.28

50.24 = 6.28 x r

Divide both sides by 6.28:

R = 50.24 / 6.28

R = 8

The radius is 8 units.

8 0
3 years ago
What is the value of x?<br><br><br><br> Enter your answer in the box.<br><br> x =
kogti [31]

Answer:

x = 98 degrees

Step-by-step explanation:

A heptagon has a total of 900 degrees for the interior angles. Add up all the angles and then subtract from 900 to find x.

146+122+142+140+110+142 = 802.

900-802 = 98

4 0
3 years ago
Read 2 more answers
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