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aleksley [76]
2 years ago
8

The length of the 2 black rods is equal to that of the 3 grey rods. The length of the white rod is equal to the total length of

the 2 black and 3 grey rods as shown in the figure.
Therefore the length of the grey rod is ______ the length of the white rod.
Which of these can come in the blank above?
a)1/6
b) 1/5
c) 1/4
d) 1/4

Mathematics
1 answer:
Tpy6a [65]2 years ago
3 0

Answer:

Its C!

Step-by-step explanation:

hmu if you need anything els

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If the function y = sinx is transformed to y = 3 sine (two-thirds x), how do the amplitude and period change?
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Answer:

Amplitude increases and the period decreases

Step-by-step explanation:

Here, we are to compare amplitude change and period change

The first equation is;

y = sin x

The second is

y = 3 sine (2/3)x

Generally, the equation of a sine graph can be written as;

y = a sin (bx + c)

where a represents the amplitude and b refers to the period

In the first equation , a = 1 while in the second , a = 3 ; This shows an amplitude increase

In the first equation, b = 1 while in the second equation b = 2/3; this shows a period decrease

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to eliminate the y-terms and solve for x in the fewest steps, by which constants should the equations be multiplied? first equat
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Answer: The first equation should be multiplied by 9 and the second equation by −4, to eliminate the y-terms and solve for x in the fewest steps.


Step-by-step explanation:

Given : Equation (1) 5x − 4y = 28

Equation (2) 3x - 9y = 30

to eliminate the y-terms and solve for x in the fewest steps, we should multiply  equation (1) by 9 and equation (2) by -4 such that

9(5x − 4y) =9 (28)⇒45x-36y=252

-4(3x - 9y) = -4(30)⇒ -12x+36y= -120

Now adding both equations, y-term eliminated and we get, 45x-12x=132

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Alex bought a new easy chair for $399. She bought it on the '12 months is the same as cash' plan. The contract stated that if no
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Answer:

$ 454.86 : $33.25

Step-by-step explanation:

1.

Alex bought the new easy chair for $ 399 .

If she pays the amount in 13th month. So,  she has to pay the interest of 1 month too , which is, = $ \frac {399 \times 14}{100}

                                    =  $ 55.86

So, total amount she has to pay for the chair,

                       = (cost price of the chair + interest)

                       = $ (399 + 55.86)

                       = $ 454.86  (answer)

2.    

If she wants to pay the amount within the 12 months, so that she doesn't have to pay the interest,  her budget for that for each month will be ,

                               $ \frac {399}{12}

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