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grandymaker [24]
3 years ago
10

What is 2/3 plus 4/9 equal

Mathematics
2 answers:
saveliy_v [14]3 years ago
8 0
I believe the correct answer to your question is no
ss7ja [257]3 years ago
6 0
2/3+4/9
denominator= 3*9=27
numerator = (18+12)= 30
therefore the answer is 30/27= 10/9
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The sum of 6 times a number and 7 is equal to 5
inessss [21]

Answer:

6*x*7=5 or x*42=5

Step-by-step explanation:

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3 years ago
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Help if you can do this please
olga nikolaevna [1]

Answer:

Step-by-step explanation:

a. Since the parabola is compressed by a factor of 1/3 we can state:

  • a parabola is written this way : y=(x-h)²+k
  • h stands for the translation to the left ⇒ 2*3=6
  • k for the units down  ⇒4*3=12

So the equation is : y=(x-6)²+12

b.Here the parabola is stretched by a factor of 2 so we must multiply by 1/2

  • We khow that a parabola is written this way : y=(x-h)²+k
  • (h,k) are the coordinates of the vertex
  • the maximum value is  7*0.5=3.5
  • we khow tha the derivative of a quadratic function is null in the maximum value
  • so let's derivate (x-h)²+k= x²+h²-2xh+k
  • f'(x)= 2x-2h    h is 1 since the axe of simmetry is x=1
  • f'(x)=2x-2 ⇒2x-2=0⇒ x= 1
  • Now we khow that 1 is the point where the derivative is null
  • f(1)=3.5
  • 3.5=(x-1)²+k
  • 3.5= (1-1)²+k⇒ k=3.5

So the equation is : y=(x-1)²+3.5

7.

the maximum height is where the derivative equals 0

  • h= -5.25(t-4)²+86
  • h= -5.25(t²-8t+16)+86
  • h=-5.25t²+42t-84+86
  • h=-5.25t²+42t+2

Let's derivate it :

  • f(x)= -10.5t+42
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  • 42=10.5t
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When the height was at max t=4s

  • h(max)= -5.25(4-4)²+86 = 86 m

h was 86m

8 0
3 years ago
Aiko is finding the sum (4 + 5i) + (-3 + 7i). She rewrites the sum as (-3 + 7)i + (4 + 5)i. Which statement explains the
Doss [256]

Answer:

Aiko should not have put both of the 'i' out of the brackets.

Step-by-step explanation:

As only one integer has i with it, it is not possible to take the i out of the bracket.

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3 years ago
Find length and width .the lenght is 10 times as long as the width.P=308
patriot [66]

<span>Width(height): x
length of rectangle: 10x 
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or ------- 2width+2length=308
2x+2(10x)=308
2x+20x=308
22x=308</span>

<span>
x=14 the width is 14 inches 
length:
10x
10*14
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Width: 14 inches</span>

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[AWENSERED] Which statements are true about the reduction of rectangle ABCD to rectangle A’B’C’D’? Check all that apply.
Oxana [17]

Answer: 1 and 4

Step-by-step explanation: just did it

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