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3 years ago

So I need the answers ASAP 30 points and brainliest

Mathematics

2 answers:

Alenkasestr [34]3 years ago

8 0

So the first one would be 6/20 which reduces to 3/10. the second one is there are likely 80 black marbles.

shtirl [24]3 years ago

7 0

Answer:

okay so count how many beads there are in all then mak eitinto a fraction and then you will gte your answer

Step-by-step explanation:

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2) If Michael invests $2000 in the bank at a rate of 5.5% for 6 years how much

Bad White [126]

Answer:

nnn

Step-by-step explanation:

3 0

2 years ago

If f(x) = (5x^3 - 4)^4, then what is f '(x)?

vlabodo [156]

You apply the rule to put the exponent in front, and lower it by one. But since this is a nested expression, you apply it twice:

4*(5x^3-4)^3 * 3*5x^2 =

60x^2 (5x^3-4)^3

4 0

3 years ago

Solve for j<br><br> -1/3 = j/4 - 10/3

fgiga [73]

Answer: J=12

Explanation: To make this equation easier to solve, you can make everything a whole number (a.k.a. Remove the fractions). To do so, you can multiply everything in this equation by the Least Common Multiple (LCM) of all the denominators, which is 12. The equation now becomes:

-4=3J-40

Then, solve it using normal algebra:

-4=3J-40
36=3J
J=12

Much easier, right?!

Hope that helps シ

6 0

2 years ago

You and a friend buy two fruit smoothies and leave a tip. You split the total and your half comes to $3.60. What percent tip (in

kykrilka [37]

.60 if you divide 3.60 by 6 youll get the answer heres another example:

$25.16 (total for a dinner) divided by 6 = $ 4.19

6 0

3 years ago

One semester in a chemistry class, 14 students failed due to poor attendance, 23 failed due to not studying, 15 failed because t

BlackZzzverrR [31]

Answer:

(a) 16 students failed for exactly two of the three reasons.

(b) 7 students failed because of poor attendance and not studying but not because of not turning in assignments.

(c) 14 students failed because of exactly one of the three reasons.

(d) 3 students failed because of poor attendance and not turning in assignments but not because of not studying.

Step-by-step explanation:

We are given that one semester in a chemistry class, 14 students failed due to poor attendance, 23 failed due to not studying, 15 failed because they did not turn in assignments, 9 failed because of poor attendance and not studying, 8 failed because of not studying and not turning in assignments, 5 failed because of poor attendance and not turning in assignments, and 2 failed because of all three of these reasons.

As shown in the diagram attached below, a Venn diagram represents the situation given in the question;

In the diagram below, 2 in represents purple color represents the number of students failed because of all three of these reasons.

7 represents the number of students who failed because of poor attendance and not studying but not due to not turning in assignments.

6 represents the number of students who failed because of not studying and not turning in assignments but not due to poor attendance.

3 represents the number of students who failed because of poor attendance and not turning in assignments but not due to not studying.

2 in red color represents the number of students who failed only due to poor attendance.

8 in red color represents the number of students who failed only due to not studying.

4 in red color represents the number of students who failed only due to not turning in assignments.

(a) The number of students who failed because of exactly two of the three reasons = 7 + 6 + 3 = 16 students.

(b) The number of students who failed because of poor attendance and not studying but not because of not turning in assignments = 9 - 2 = 7 students.

(c) The number of students who failed because of exactly one of the three reasons = 2 + 8 + 4 = 14 students.

(d) The number of students who failed because of poor attendance and not turning in assignments but not because of not studying = 5 - 2 = 3 students.

7 0

3 years ago