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TEA [102]
3 years ago
13

Can someone please help me with 7 and 8

Mathematics
1 answer:
myrzilka [38]3 years ago
5 0
7) So when x=6 then z=72, they are directly proportional, so if I multiply the first with a number, then I have to multiply the second with the same number.
6 becomes 13 (x)  /multiplied with about 2.167/
72 becomes 156(y) /multiplied with about 2.167/

8) Inversely proportional, so if I multiply the first with a number, then I have to divide the second with the same number.
6 becomes 13 (x)
2 becomes ~0.92307(y) /round it to the thousandths place and you get 0.923/

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irina [24]

Answer:

Step-by-step explanation:

x² + x  - 2 = x² - x +2x -2 = x(x - 1) + 2*(x-1)  = (x-1)(x+2)

8x² + 4x = 4x ( 2x + 1)

3x² + 10x + 8 = 3x² + 6x + 4x + 4*2  =3x  * (x + 2) + 4 * ( x + 2) = (x + 2)(3x + 4)

6 0
3 years ago
how do the graphs of f(x) = sin x and g(x) = sin2x+3 compare. Must make two selections of the following that apply.
Elena L [17]

Answer:

The correct options are:

  • g(x) is shifted three units higher than f(x).
  • g(x) has a period that is half the period of  f(x).

Step-by-step explanation:

We have to compare the graphs of the function:

f(x)=\sin x

and g(x)=\sin 2x+3

We have to select the correct options among the following:

As we know that the period of sine function is 2π.

i.e. Period of function f(x) is: 2π.

The period of sin(2 x) is π.

Hence, the period of the function g(x) function is π.

  • Hence, the period of g(x) is half the period of f(x).
  • Also we could observe that g(x) is shifted 3 units upward.

3 0
3 years ago
Read 2 more answers
What is the smallest number with the factors 1,2,3,4, and 5? What is the special name for it?
klasskru [66]
To find LCM
factor and eliminate ones already represented
1=1
2=2
3=3
4=2*2
5=5

1*2*2*3*5=60
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3 years ago
Geoff purchased a life annuity for $4,800 that will provide him $100 monthly payments for as long as he lives. Based on IRS tabl
Anestetic [448]

Answer:George will receive $1200

first $100 payment which will included in his gross income.

Step-by-step explanation:

His gross income will be $100 per months multiple by 12months which will be his first $100 payment.

$100× 12=$1200

3 0
3 years ago
the width of a rectangle is 8cm less then its length the perimeter of the rectangle is 52 cm. what is the width of the rectangle
BartSMP [9]
P=2L+2a
w=L-8, P=52
52=2L +2(L-8)
52=4L-16
68=4L
L=17, w=9
4 0
3 years ago
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