MATHEMATICS MIDDLE SCHOOL

Invested 28, 000 in two accounts, one yielding 8% and the other at 9%. If i receive a total of 2,440 in intrest at the end of the year, how much did i invested in each account

Answers

Answer 1
Answer:

Answer:

8,000 in the 8% account

20,000 in the 9% account.

Step-by-step explanation:

x + y = 28000

0.08 x + 0.09 y = 2440

0.08 x + 0.09 (28000 − x) = 2440

0.08 x + 2520 − 0.09 x = 2440

80 = 0.01 x

x = 8000

y = 20000

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What's -8(2)-[3(-5)-(-1)+4(2-6)]+4(-7)

Answers

Answer:

-14

Step-by-step explanation:

-8(2)-[3(-5)-(-1)+4(2-6)]+4(-7)

opening the brackets

-8(2)-[-15+1+4(-4)]+4(-7)

-8(2)-[-15+1+4(-4)]+(-28)

-8(2)-[-15+1+(-16)]-28

-16-[-15+1+-16]-28

-16-[-15-16+1]-28

-16-[-31+1]-28

-16-[-30]-28

-16+30-28

-16-28+30

-44+30

-14

Is there a relationship between the area and perimeter of a rectangle?

Answers

Don't think so, area has nothing to do with perimeter.
Area you multiply the length and base , but perimeter you multiply length x width x height or also know as LxWxH.  ex. area. Length = 4. height = 2. 4 x 2 = 8. your area is 8. perimeter. length = 4. width = 2 . height = 3. 4x2x3=24. your perimenter is 24.

There are 30 flavors and you can mix up to 3 of them. How many flavor possibilities are there? You can't mix the same flavors more than once in one drink. Please show your work.

Answers

If there are 30 flavors and you can have three of them then it is 30^3 who's his 2700 I think that is correct
I hope that is helpful
would it be 10? because 30/3

4²+5[61-(5×6)] what's the answer for this

Answers

In this question we can see that there are different type of brackets used. Also there is multiplication addition and subtraction. So we need to follow the BODMAS rule.
B = Bracket
O = Of
D = Division
M = Multiplication
A = Addition
S = Subtraction
Now let us focus on the problem in hand.
4^2 + 5[ 61 - (5 * 6)] = (4)^2 + 5[ 61 - (30)]
                                 = (4)^2 + 5[ 61 - 30]
                                 = 16 + 5 [31]
                                 = 16 + 155
                                 = 171
So the answer for the question comes out to be 171. I hope the procedure is clear enough for you to understand. You can always use this method for solving similar problems in future.
If you would like to solve 4^2 + 5 * [61 - (5 * 6)], you can calculate this using the following steps:

4^2 + 5 * [61 - (5 * 6)] = 16 + 5 * [61 - 30] = 16 + 5 * 31 = 16 + 155 = 171

The correct result would be 171.

How do I factor out the coefficient of the variable -5p+20

Answers

-5(p-4)

think of dividing each term by whatever you're factoring out, so the -5/-5 becomes a 1, and the +20/-5 becomes -4

Joe what's to build a fence for his dog Charlie he plans to surround the rectangle to the right with fence. How many feet will he need

Answers

Joe wants to build a fence for his dog Charlie.
The lengths of the perimeter of the rectangle that he plans to surround with fence are as follows:

10 feet + 15 feet + 10 feet + 15 +feet.

The total perimeter area of a rectangle is worked out as follows:
10 + 15 + 10 + 15 = 50 
Therefore Joe needs 50 feet of fencing to totally surround the rectangle with fence. 
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