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3 years ago

If there were 20 students in the math 101 class how many of them made an a in the course

Mathematics

1 answer:

ser-zykov [4K]3 years ago

3 0

Answer:

4 students

Step-by-step explanation:

Given that there are 20 student in that Math class and 23% made an A in the course, the number of students that made an A is;

23/100 *20 = 46/10 =4.6

This means exactly 4 students made an A in the class of 20 students.

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A train to New York city leaves a station every 7 minutes. Another train to Boston leaves the station every 6 minutes. Suppose i

Virty [35]

Answer:

7:12 a.m

Step-by-step explanation:

Given that:

Train to New York city leaves station every 7 minutes

Train to Boston leaves station every 6 minutes

Current time = 6:30 a.m

Time both will leave station together is obtained by finding the least common multiple of 6 and 7

Multiples of ;

6 = 6, 12, 18, 24, 30, 36, 42, 48, 54, 60,...

7 = 7, 14, 21, 28, 35, 42, 49, 56, 63, 70,...

The least common multiple of 6 and 7 is 42.

Hence, both trains will leave the station together after 42 minutes ;

Current time + 42 minutes

6:30 a.m+ 42 minutes = 7:12 a.m

7 0

3 years ago

Pls pls help with this math

bixtya [17]

Answer:

7, -1

Step-by-step explanation:

x^2 - 6x + 7 = 0

(x - 7)(x + 1) = 0

==> x = 7, x = -1

5 0

3 years ago

Read 2 more answers

Enter in standard form the equation of the line passing through the given point and having the given slope.. . B(2, - 5), m = -2

dalvyx [7]

Y = mx + b
slope(m) = -2/3
(2,-5)...x = 2 and y = -5
now we sub, we r looking for b, the y int
-5 = -2/3(2) + b
-5 = - 4/3 + b
-5 + 4/3 = b
- 15/3 + 4/3 = b
- 11/3 = b

equation is : y = -2/3x - 11/3...but we need it in standard form
Ax + By = C

y = -2/3x - 11/3
2/3x + y = - 11/3....multiply by 3
2x + 3y = -11 <== standard form

4 0

3 years ago

My crush cole doesn't really like me,am i doing something wrong?

kap26 [50]

Answer:

well maybe you just have to do something that he likes with him and get a little closer to him as a friend before you try something

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

A newspaper carrier has $5.40 in change. He has six more quarters than dimes but five times as many nickles as quarters. How man

BigorU [14]

X= number of dimes
x+6= number of quarters
5(x+6)= number of nickels
$5.40= 540 cents

Add the number of each coin and set it equal to the total in cents.

x + (x + 6) + 5(x + 6)= $5.40
multiply 5 by parentheses; change dollar total to cents

x + (x + 6) + (5 * x) + (5 * 6)= 540

x + (x + 6) + 5x + 30= 540
combine like terms

7x + 36= 540
subtract 36 from both sides

7x= 504
divide both sides by 7

x= 72 dimes

x + 6= 78 quarters

5(x + 6)= 390 nickels

CHECK
72 + 78 + 390= 540
540= 540

ANSWER: There are 72 dimes, 78 quarters and 390 nickels.

Hope this helps! :)

5 0

3 years ago