MATHEMATICS MIDDLE SCHOOL

Convert the length of 7 centimeters to meters. Compare the numerical values when both numbers are written in scientific notation. I have this so far:
7 centimeters= 0.07 meters
0.07 in scientific notation is 7x10^-2

Answers

Answer 1
Answer: i think you did correct.

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Consider the sequence below.-4, -1, 2, 5, . . .

What is the 10th term of the sequence?

Answers

Answer: 23

Explanation: First of all, let's make sure we have an arithmetic sequence. An arithmetic sequence is a sequence that has a common difference which is the number repeatedly added or subtracted to reach the next term.

To get from -4 to -1, we're adding 3.

To get from -1 to 2, we're adding 3.

To get from 2 to 5, we're adding 3.

So we know that this is an arithmetic sequence because it has a common difference or the number that is repeatedly added which is 3.

Now, we want to determine the 10th term in this sequence.

There are 2 ways that you can determine the 10th term. You can keep on adding 3 until you get to the 10th term or you can use the explicit formula. I will show you the explicit formula which is shown below.

^(a)n = ^(a)1(n - 1)d

Now we want to determine what the 10th term is so we're trying to determine ^(a)10. Now, we know what ^(a)1 is because it's our first term or -4. Now, n will be the number of terms we're solving for or 10. Lastly, we have the d which represents the common difference which is 3.

So plugging into the formula, we have ^(a)10 = -4 +(10 -1)(3).

Now, make sure we apply order of operations because this is where many students make mistakes.

(10 -1) is going to be 9. Then we want to make sure we multiply before we add so 9 x 3 is going to be 27 and then -4 + 27 is 23.

So the 10th term in this sequence is 23.
35, because the intervals are +3,

3*10 = 30
Therefore,
5+30= 35

A study involving teenage golfers was conducted to determine the imapact practice time has on golf scores in a tournament. What is the dependent variable?A. golf scores in the tournament
B. practice time
C. age of golfers
D. difficulty of the golf course

Answers

Remember that the dependent variables'(often referred to as y) value is based off of the independent variable, which can change around on its own and directly change the dependent variable.

With that being said, the answer is A:

Golf scores in the tournament. This is because it depends on

practice time(the independent variable).

Good luck!

-RxL
A. Golf score in the tournament
Hope this helps :)

Kaylee got a 15% raise.She now earns $23 an hour. How much did she earn per hour before the raise

Answers

Let her earning before the raise be x...

Therefore, x + 15% of x = 23

x+(15*x)/100 =23

1.15x = 23

x=23/1.15
x= 20                   So, Kaylee earned $20 per hour before the raise.

What is the answer? and why is that the answer?

Answers

Since you have a ratio of how many galleons to galleys were in the Spanish Armada, the information you would need to find the total amount of galleons and galleys would be how many the Armada had of one of the two kinds.

For example, if we know that the Armada had 100 galleons, then we can use the ratio of 5 galleons : 1 galley to find out how many galleys it had. Then we can add the two numbers to find out how many ships total.

So, you need either the amount of galleons, or the amount of galleys in order to figure out the total amount of galleons and galleys in the Spanish Armada.

Aidan mixes 630 mL of blue paint with 2 L of red paint to make purple paint how many milliliters of purple paint does Aiden have

Answers

2L = 2,000ml


2,000 + 630 = 2,630ml of purple paint.

If d = 8, what is the value of the expression 4+d/2 ?

Answers

Question: If d=8, what is the value of the expression 4+\frac{d}2 ?

Just substitute in 8 for d and evaluate.

4+\fracd2=4+\frac82=4+4=\boxed8

If the question was instead d=8 for the expression \frac{4+d}2, your answer would look like this:

\frac{4+d}2=\frac{4+8}2=\frac{12}2=\boxed6
First put your numbers in the right places. 4+8/2. Do your steps of P-E-M-D-A-S. There are no parentheses. There are no exponents either. There is not a multiplication problem. but there is a division problem= 8/2. So 8 divided by 2 is 4. The equation looks like this now: 4+4. Add them together and get 8. You don't have anything to subtract. Your answer will be 8.
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