I need help on this one question please someone help me pleases

Answers

Answer 1

Answer: so we simplify this and do
5(3a-1)-2(3a+2)=3(a+2)+v
15a-5-6a-4=3a+6+v
add like terms
9a-9=3a+6+v
subtract 6 from both sides and get
9a-15=3a+v
subtract 3a from both sides and get
6a-15=v or 3(2a-5)
so the answers are D,E

or if you want to avoid doing allot of math, you could just figure out which two answer choices are the same (D,E)

Answer 2

Answer: 5(3a-1)-2(3a+2)=3(a+2)+v
15a-5-6a-4=3a+6+v
9a-9=3a+6+v
9a-15=3a+v
6a-15=v or 3(2a-5)
so the answers are D,E
SORRY I GOT THE OTHER WRONG!

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Write the word name for each number and tell the value of the underlined digit 843,208,732,833 and the number under lined is the first 8

Answers

843=eight hundred forty three
208=two hundred eight
732=seven hundred thirty two
833=eight hundred thirty three

The measure of an angle is fourteen times the measure of a s

Answers

The total measure is 98.

The set of the consecutive odd numbers 1, 3, 5, 7, ... , N has a sum of 400. How many numbers are in the set?

Answers

Well, we could try adding up odd numbers, and look to see when we reach 400. But I'm hoping to find an easier way.

First of all ... I'm not sure this will help, but let's stop and notice it anyway ...
An odd number of odd numbers (like 1, 3, 5) add up to an odd number, but
an even number of odd numbers (like 1,3,5,7) add up to an even number.
So if the sum is going to be exactly 400, then there will have to be an even
number of items in the set.

Now, let's put down an even number of odd numbers to work with,and see
what we can notice about them:

   1, 3, 5, 7, 9, 11, 13, 15 .

Number of items in the set . . . 8
Sum of all the items in the set . . . 64

Hmmm. That's interesting. 64 happens to be the square of 8 .
Do you think that might be all there is to it ?

Let's check it out:

Even-numbered lists of odd numbers:

1, 3    Items = 2, Sum = 4
1, 3, 5, 7    Items = 4, Sum = 16
1, 3, 5, 7, 9, 11    Items = 6, Sum = 36
1, 3, 5, 7, 9, 11, 13, 15 . . Items = 8, Sum = 64 .

Amazing ! The sum is always the square of the number of items in the set !

For a sum of 400 ... which just happens to be the square of 20,
we just need the first 20 consecutive odd numbers.

I slogged through it on my calculator, and it's true.

I never knew this before. It seems to be something valuable
to keep in my tool-box (and cherish always).

5y + 3 = 4y - 9 what is y?

Answers

$y = - 12$

Step-by-step explanation:

$5y - 4y = - 9 - 3 \n y = - 12$

What is the length of the radius, r?

Answers

The length of the radius would be 18cm long

Answer:

18 cm

Step-by-step explanation:

The circumference (C) of a circle is calculated as

C = 2πr ← r is the radius

Given

C = 36π, then

2πr = 36π ( divide both sides by 2π )

r = $(36\pi )/(2\pi )$ = 18

A store is having a sale to celebrate president's Day. Every item in the store is advertised as one fifth off the original price. If an item is marked with a sale price of $140, what was its original price? Show your work.

Answers

1/5th off = 20% off

80% = $140
1% = $1.75
100% = $175

Answer is $175

Final answer:

The original price of an item at the store's President's Day sale, that's now reduced to $140 after a fifth off, would have been $175.

Explanation:

The subject of this question is mathematics, specifically applying percentages and fractions in context of a store sale. To solve this problem, you need to understand that a fifth off the original price means the sale price is 80% (or 4/5) of the original. If $140 is 80% of the original price, you can find the original price by dividing $140 by 0.8.

Here are the calculations:

Divide $140 by 0.8.

Thus, the original price of the item at the President's Day sale was $175.

Learn more about Percentages here:

brainly.com/question/32197511

#SPJ2

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