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Katarina [22]
3 years ago
7

How do you write 11/20 as a percentage

Mathematics
2 answers:
rewona [7]3 years ago
8 0

Answer:

55%

Step-by-step explanation:

11/20 =

11 ÷ 20 =

0.55 =

0.55 × 100/100 =

0.55 × 100% =

Eduardwww [97]3 years ago
6 0

Answer: 55%

Step-by-step explanation:

a percentage is out of 100

so you do 100 divide by 20 =5

then you times

11x5=55

20x5=100 to make the fraction 55/100

then to get a percentage you do 55 divide by 100 then times by 100

55 divide by 100=0.55

0.55 x 100=55%

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Need help with number 10 please
Naddika [18.5K]

Answer:

  Pilar is correct. Both systems have solution (-2, 4).

Step-by-step explanation:

Graphing, or any other means of solving these systems of equations reveals both systems have the same solution: (x, y) = (-2, 4).

_____

By Cramer's rule, the solution to the first set is ...

  x = (2(6)-4(2))/(2(5)-4(3)) = 4/-2 = -2

  y = (2(5)-6(3))/-2 = -8/-2 = 4

(x, y) = (-2, 4) is the solution to the first system

__

Since the first equation of the second system is the same as the first equation of the first system, we know the above solution satisfies that equation. We only need to check to see if the same point satisfies the second equation of the second system:

  11(-2) +8(4) = -22 +32 = 10 . . . . . yes,

(-2, 4) is the solution of the second system

Pilar is correct that both systems have the same solution.

_____

Cramer's Rule tells you the solution to

  • ax +by = c
  • dx +ey = g

is ...

  • x = (bg -ec)/(bd -ea)
  • y = (cd -ga)/(bd -ea) . . . . same denominator as for x

I like to use Cramer's Rule when the solution is needed without a lot of steps. Here, we could use the Elimination method to eliminate the y-variable and solve for x. Then more steps are needed to find y. The writing out and explanation are tedious, so it is much simpler just to use a formula that gives the answer.

3 0
3 years ago
State whether the two triangles below are congruent?<br> B<br> А<br> С<br> Q<br> S<br> R
tamaranim1 [39]

Answer:

Congruent

Step-by-step explanation:

There are 2 angles and a side that are congruent in both triangles. Therefore, they are congruent through AAS.

5 0
3 years ago
Read 2 more answers
63.09 ÷ .00008<br><br>No rush on this, but if you know please respond, it will be appreciated.​
mart [117]
Answer is 788, 625. Hope this helped!
3 0
3 years ago
Use change-of-base formula to find three significant digits log^6 120
Paladinen [302]
I suppose that  when you write "log^6" , you want to say log₆

Change of base formula:
loga b=logc b / logc a

log₆ 120=ln 120 / ln 6=2.67

Answer: log₆ 120=2.67
7 0
3 years ago
Evaluate 10C4. Type a numerical answer in the space provided. Do not type spaces in your answer.
SOVA2 [1]
10C4 represent the Combinations of 10 objects taken 4 at a time. 

The formula for nCr is:

nCr= \frac{n!}{r!(n-r)!}

In the given case, n=10 and r=4. Using these values we get:

10C4= \frac{10!}{4!(10-4)!} \\  \\ &#10;= \frac{10!}{4!*6!} \\  \\ &#10;=210

This means we can make 210 combinations of 10 objects taken 4 at a time.
4 0
3 years ago
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