1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
melamori03 [73]
3 years ago
5

20 POINTS!!!! PLEASE HELP ME!!!!!!

Mathematics
1 answer:
Fittoniya [83]3 years ago
8 0

Answer:

Step-by-step explanation:

a)

2.64÷3.3  ( said  2.64 divided by 3.3)

3.3√2.64  ( yes I know it's not the division sign but it's as close as we can get)

2.64 / 3.3

All three representations  are the same. each say  divide 2.64 by 3.3. If you're thinking that last one looks more like a fraction, you're right, but.. that's also what that means.   I'm showing these different ways to express the idea of division b/c it's part of what is involved with showing the work and understanding it.

so, to do the above let's move the decimal point to the right .. and do we want to move it one or two places.  :?  one because of 3.3 or two , because of 2.64, well we want to move it so we don't have to think about it in the problem... so move it the biggest amount that you need to, get the the decimil out of both numbers.. since the 2.64 needs two moves to the right of the decimal... use 100 times  to move it 2 places, If you needed 3 then use 1000, 4 , 10,000 ect ect... see the pattern?

so

100(3.3 √ 2.64 )

move the decimal point in both 2 places right

330.0 √ 264.0

I put the extra zeros in, just so you can see the decimal easy.  The zeros to the right of the decimal make no difference here.

now I'll know to put the number that I use to divde with above the zero,  of 264.0  .. and i'll think about how many times 3 goes into 26 ,without going over.  3*8 = 24 so I want an 8

    ↓ ←  <u> ←  ← 0.8</u>

330.0 √ 264.0      ( multiply  8 * 330 = 2640 )

    ↓ →  <u> -264 .0   </u>    ( subtract 2640 from the number above )

                       0

you are done with that one, since there is zero left over and   0.8 is the answer

b)

0.324 ÷ 0.27

0.27 √ 0.324

0324 / 0.27

1000( 0.27 √ 0.324)

270 √ 324.0

  ↓  ←<u>  ←  1.2</u>

270 √ 324.0

 ↓→  <u> - 270</u>   ( multiply by the 1 )

 ↓    =      54

 ↓→     <u>   - 540</u>  (multiply by the 2 )

                  0

since there is zero left over you are done. The answer is  1.2

C)

0.32 ÷ 0.16

0.16 √ 0.32

100(0.32 / 0.16)

↓<u> ←   2</u>

16 √32

↓→<u>  -32</u>  ( multiply 16 * 2 = 32 )

         0

zero left over you are done.  the answer is 2 :)

d)

16.92 ÷ 9.4

9.4 √ 16.92

100(16.92 / 9.4)

  ↓  <u> ←  ←  1.8</u>

940 √1692.0

 ↓→→ <u>- 940      </u> (multiply by 1 )

 ↓        7520

 ↓→  <u>-  7520    </u>  (multiply by 8 )

                 0

since there is zero left you are done,  The answer is  1.8

that was a lot, really nobody has talked or told you how to do this before?  

where is your teacher?  :/  

You might be interested in
the larger of two numbers is one more than four times the smallest number. if the sum of the numbers is 106, find the numbers
Rainbow [258]

Let x be the larger number; Let y be the smaller number.

EQUATIONS:

x-2y=1

x+y+20=3x

---------

Rewrite as

x-2y=1

2x-y=20

==


6 0
3 years ago
X = 5 -3 x is not quadratic what is the reason​
OleMash [197]

Answer:Although the Quadratic Formula always works as a strategy to solve quadratic equations, for many problems it is not the most efficient method. Sometimes it is faster to factor or complete the square or even just "out-think" the problem. For each equation below, choose the method you think is most efficient to solve the equation and explain your reason. Note that you do not actually need to solve the equation. a. x2+7x−8=0x  

2

+7x−8=0, b. (x+2)2=49(x+2)  

2

=49, c. 5x2−x−7=05x  

2

−x−7=0, d. x2+4x=−1x  

2

+4x=−1.

6 0
3 years ago
Read 2 more answers
Identify whether each set of ordered pairs is a function or is not a function. Function Not a Function
Anna35 [415]

Answer:

1. Function

2. Function

3. Function

4. Not a Function

5. Not a Function

Step-by-step explanation:

Hope it helps:)

7 0
2 years ago
If Linda can walk 6 miles in 80 minutes,
Marta_Voda [28]
I think it is 4.5 miles per hour
8 0
3 years ago
Pleaseee help <br><br> What choices are real numbers? Check all that apply.
7nadin3 [17]

Answer:

what  you arest mine but the other one says no answer what

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • In this triangle, the product of tan A and Tan C is ( a. 1 b. 4.24 c. 17.98 or d. Insufficient data )
    14·1 answer
  • What is the linear equation of 3x = 12 - 2y in standard form?
    12·2 answers
  • Find the distance between points (-8,-2) and (-2,-10)​
    7·1 answer
  • How long does it take to drive 150 miles at 30 mph?
    15·2 answers
  • 34​% of all doctors are family practitioners. If 3 doctors are selected at ​random, what is the probability that all 3 are famil
    7·1 answer
  • PLEASE HELP NOW WILL MARK BRAINLEST FOR CORRECT ANSWER A Brazilian town near the Amazon River has experienced 7% annual decrease
    11·2 answers
  • The cost pre ounce of the perfume is $
    6·1 answer
  • A triangle has sides with lengths of 7 meters, 10 meters and 13 meters is it a right triangle
    6·2 answers
  • What is the measure of each angle if x = 13?
    11·1 answer
  • Please help this is due soon, whoever answers correctly will get a brainy!
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!