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monitta
2 years ago
11

What is the value of this expression when a = 4, b= -5, and c =-7? a + 2bc/3a

Mathematics
1 answer:
Vikentia [17]2 years ago
5 0

Answer:

The answer would be c- 6 1/6

Step-by-step explanation:

I recommend desmos scientific calculator if you put in a=4, b=-5, c=-7 then plug in the equation it should give you your answer!

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Your teacher is choosing 2 students to run an errand for her. There are 12 girls and 10 boys in the class. What is the probabili
Ne4ueva [31]

Answer:

2/7

Step-by-step explanation:

There are 22 (12 + 10) total students in the class. That means that the chance of the first student picked being a girl is 12/22.

Now, we must calculate the chance of the next student to be picked <em>also </em>being a girl - however, there is a trap here! Remember that since a girl has been picked, the total student pool has decreased to 21 and and the total number of girls has decreased to 11. This means the new chance of girl being picked is 11/21.

To find the probability of both these events happening in conjunction, these fractions must be multiplied. 12/22 * 11/21 = 132/462, which simplifies to 2/7.

4 0
3 years ago
Read 2 more answers
Brandon solved 24 math problems in 8 minutes, and Marcus solved 18 math problems in 9 minutes. Who solved more problems per minu
Delicious77 [7]

Answer

Brandon

Step-by-step explanation:

Brandon solved three a minute while Marcus solved two a minute

4 0
3 years ago
A company sells boxes of duck calls (d) for $35 and boxes of turkey calls (t) for $45. they make batches of duck calls that fill
SIZIF [17.4K]

Answer:

Option A is the correct choice.

Step-by-step explanation:

Let d be the number of boxes of duck calls and t be the number of boxes of turkey calls.

We have been given that a company sells boxes of duck calls for $35 and boxes of turkey calls (t) for $45, so the revenue earned from selling d boxes of duck and t boxes of turkey call will be 35d and 45t respectively.

Further, the company plan to make $300. We can represent this information as:

35d+45t=300...(1)

We are also told that they make batches of duck calls that fill 6 boxes and batches of turkey calls that fill 8 boxes. the company only has 42 boxes. We can represent this information as:

6d+8t=42...(2)

6d=42-8t...(2)

Therefore, our desired system of equation will be:

35d+45t=300...(1)

6d=42-8t...(2)  


8 0
3 years ago
Add 280.00 +21.40 +6.30 +.41 = 308.71, I don't know where the 7 was added though
Vitek1552 [10]
I m getting 308.11, there is an additional 0.60 that is added, maybe your source is wrong, or there is a copying error.
8 0
3 years ago
Find the difference. Enter your answer in simplest terms, using the slash (/) as the fraction bar.
Kitty [74]
So, difference as in subtract? so, if it is, it would be 15. if it means percent difference, it's about 60%.
3 0
3 years ago
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