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RSB [31]
3 years ago
7

Please helppppppppppppppp

Mathematics
1 answer:
tatyana61 [14]3 years ago
4 0

Answer:

looks pretty hard

Step-by-step explanation:

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Mumz [18]
49. Equation A
50. Equation C
4 0
3 years ago
If (a+b)(a-b)=21,a+b=7 and a-b=3 what Is the value of a
topjm [15]

9514 1404 393

Answer:

  5

Step-by-step explanation:

Add the latter two equations and you get ...

  (a +b) +(a -b) = (7) +(3)

  2a = 10 . . . . . . . . . . . . . . . simplify

  a = 5 . . . . . . . divide by 2

8 0
3 years ago
155%of 80 is what number
brilliants [131]
Recall that the conversion of 155% to decimal is to divide by 100. Thus, 155%=1.55.

Now, multiply this by 80: 1.55 * 80=124

So our answer is 124.
8 0
3 years ago
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Help me find the function pls
wlad13 [49]

Answer:

  see below

Step-by-step explanation:

The tangent function has been shifted upward by 2 units, but there has been no horizontal scaling. Any horizontal offset must be equal to some number of whole periods.

Choices A and B show tan( )+2, the correct vertical offset. However, choice A has a horizontal scale factor of 2. The correct choice is B, which has no horizontal scaling (the coefficient of x is 1) and a horizontal offset of π, one full period.

_____

<em>Comment on horizontal scaling</em>

Horizontal scaling is different from vertical scaling in that using k·x in place of x <em>compresses</em> the graph horizontally by a factor of k. On the other hand, using k·f(x) in place of f(x) <em>expands</em> the graph vertically by a factor of k.

3 0
3 years ago
PLEASE HELPPP i would really appreciate it :)
qaws [65]

Answer:

Y = - 12.55X1 + 276.52

Step-by-step explanation:

Given the data:

Age of child :(X) : 4, 6, 10, 13, 14, 17

Time (seconds) (Y) : 230, 205, 132, 119, 108, 62

Using technology, the linear regression equation obtained using the data Given is :

Y = - 12.55X1 + 276.52

Where :

Slope = - 12.55

Intercept = 276.52

This also indicates that a negative slope is present and hence a negative relationship between age of Child and time in seconds.

3 0
2 years ago
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