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murzikaleks [220]
3 years ago
12

55 is 80% of what number? round to the nearest tenth, is necessary.

Mathematics
1 answer:
Sophie [7]3 years ago
4 0

let the number = x

x*80/100 = 55

x = 5500/80

x=68.75

After rounding off, it will remain 68.75

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On Monday, three hundred ninety - two students went on a trip to the zoo. All nine buses were filled and five students had to tr
Vikki [24]
The answer to your question is 43
5 0
3 years ago
Amy can buy 5 shirts for a total of $25.How much would it cost if she were to buy 9 shirts at the same price?
Blababa [14]

Answer:

It would cost her $45.

Step-by-step explanation:

25 dollars divided by 5 shirts = 5 dollars per shirt.

5 dollars x 9 shirts = $45 dollars in total.

8 0
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Read 2 more answers
Identify the​ vertex, the axis of​ symmetry, the maximum or minimum​ value, and the range of the parabola for y=x^2+6x+13
charle [14.2K]

Answer:


Step-by-step explanation:

First we can determine the x value of our vertex via the equation:

x=\frac{-b}{2a}

Note that in general a quadratic equation is such that:

ax^2+bx+c

In this case a,b and c are the coefficients and so a=1, b=6 and c=13.

Therefore we can determine the x component of the vertex by plugging in the values known and so:

x=\frac{-b}{2a}=\frac{-6}{2(1)}=\frac{-6}{2}=-3

Now we can determine the y-component of our vertex by plugging in the x-component to the equation and so:

f(x)=x^2+6x+13\\\\f(-3)=(-3)^2+6(-3)+13\\\\f(-3)=4

Therefore our vertex is (-3,4).  Now in vertex our x component determines is the axis of symmetry so the equation for axis of symmetry is:

x=-3

Similarly, the y-component of our vertex is the minimum or maximum.  In this case it is the minimum you can determine this because a is positive meaning that the parabola will point up, and so the equation for the  minimum is:

y=4

The range of the formula is the smallest y-value meaning the minimum y=4 and all real numbers that are more than 4, mathematically:

Range = All real numbers greater than or equal to 4.

4 0
3 years ago
What are 3 consecutive integers whose product is -120
iren2701 [21]
Consecutive integers are 1 apart
x,x+1,x+2
(x)(x+1)(x+2)=-120
x^3+3x^2+3x=-120
add 120 to both sides
x^3+3x^2+3x+120=0
factor
(x+6)(x^2-3x+20)=0
set each to zero

x+6=0
x=-6

x^2-3x+20=0
will yeild non-real result, discard
x=-6
x+1=-5
x+2=-4
the numbers are -4,-5,-6



use trial and error and logic
factor 120
120=2*2*2*3*5
how can we rearange these numbers in (x)(y)(z) format such that they multiply to 120?
obviously, the 5 has to stay since 2*5=10 which is out of range
so 2*2*2*3 has to arrange to get 3,4 or 4, 6 or 6,7
obviously, 7 cannot happen since it is prime
3 and 4 results in in 12, but 2*2*2*3=24
therfor answer is 4 and 6
they are all negative since negaive cancel except 1

the numbers are -4,-5,-6
5 0
3 years ago
PLEASE HELP ME<br><br> PLEASE BE CORRECT WHEN ANSWERING
lisabon 2012 [21]

9514 1404 393

Answer:

  1/3

Step-by-step explanation:

The scale factor is the ratio of image lengths to original lengths.

  B'C' = 1 unit

  BC = 3 units

The scale factor is B'C'/BC = 1/3.

_____

<em>Additional comment</em>

The center of dilation in this figure is 3 units below D' on the same vertical line. (It is 1 unit off the bottom of the grid shown.)

6 0
3 years ago
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