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sesenic [268]
2 years ago
10

PLEASE HELP!!!!!!!

Mathematics
2 answers:
Naily [24]2 years ago
5 0

Answer:

twice the number of 30 second ads = the number of 60 second ads

Step-by-step explanation:

I can not see much work done for explanation of the error, but  

let x be the ad pf 30 second

y be the ad of 60 second

so both add together will make 12 minutes, so by counting the time in seconds we will multiply 12 by 60  so we will have a equation

x +y = 12 x 60

x+y = 720 ----------1

as x is 30 second so we can say y = 2x---------- equation 2

adding value of y in equation 1

x+ 2x= 720

3x= 720

x= 720/3=  240

adding value of x in equation 2

y= 2(240)

y= 480

so from equation 1 and 2.,   x = 240     y =480

hodyreva [135]2 years ago
4 0

Answer:Zöe set up an equation that would translate to “twice the number of 30 second ads = the number of 60 second ads.”  She should have used

Step-by-step explanation:

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Which is equivalent to-2(4-3x)+ (5x-2)
almond37 [142]

Answer:

Step-by-step explanation:

-2(4-3x)+(5x-2)

-8+6x+5x-2

11x-10

3 0
1 year ago
D2-9k+3 for d=10 and k=9
AVprozaik [17]

Answer:

22

Step-by-step explanation:

10^2-9(9)+3

100-81+3

19+3

22

8 0
1 year ago
Kite A B C D is shown. Lines are drawn from point A to point C and from point B to point D and intersect. In the kite, AC = 10 a
Oduvanchick [21]

Answer:

30 u^{2}

Step-by-step explanation:

The computation of the area of kite ABCD is shown below:

Given data

AC = 10 ;

BD = 6

As we can see from the attached figure that the Kite is a quadrilateral as it involves two adjacent sides i.e to be equal

Now the area of quadrilateral when the diagonals are given

So, it is

\text { area of kite }=\frac{1}{2} \times d_{1} d_{2}

where,

d_{1}=10\ and\ d_{2}=6

So, the area of the quadrilateral is

=\frac{1}{2}(10)(6)\\\\=30 u^{2}

4 0
1 year ago
which function increases at a faster rate on 0 to infinity, f(x) = x2 or g(x) = 2x? explain your reasoning
Tcecarenko [31]
F(x) = x²    increases at a faster rate than g(x) = 2x.

f(x)

Reason:

x =  0,   1,   2,   3,   4,   5,   6,   7

f(x) = 0,   1,  4,  9,   16,  25,   36,   49

g(x) = 0,  2,  4,   6,    8,  10,    12,    14.

Comparing the values of f(x) and g(x), we can see that that of f(x) are far higher than that of g(x) for the same values of x.

So f(x) increases at a faster rate. 
7 0
2 years ago
Read 2 more answers
An engineer is designing an arch-shaped gate for the entrance to an amusement park. The gate must be 80 feet wide and 25 feet ta
Tom [10]
1) the form of the equation may be written as y = A(X - Xo)(X - X1)

Where Xo and X1 are the two roots of the equation.


2) We can fix the system of coordinates so that the vertex is in the middle of the gate => Xo = - 40 and X1 = +40


=> y = A (X + 40) (X - 40) = A (X^2 - 1600) 


3) The height, at X = 0 is 25

=> A(0 - 1600) = 25


=> -1600A = 25 => A = -25 / 1600 = - 1/64


4) The equation is y =  - [1/64] (X^2 - 1600)


5) You can present it in different equivalent forms.

Some of those other forms are:

1) - 64y = (x^2 - 1600)

2) x^2 = - 64y + 1600

3) X^2 = - 64 (y - 25)
4 0
1 year ago
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