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beks73 [17]
3 years ago
14

HELP!

-7" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
katen-ka-za [31]3 years ago
6 0

\huge \huge \huge\huge\mathrm{ \boxed{ \boxed{ \boxed{ \boxed{ \boxed {\boxed{  \huge\mathfrak{ Solution}}}}}}}}

  • \sqrt{x - 1}   - x =  - 7

  • \sqrt{x - 1}  =x  - 7

  • x - 1 = (x - 7) {}^{2}

  • x - 1 =  {x}^{2}  + 49 - 14x

  • {x}^{2}  - 14x + 49 - x + 1 = 0

  • {x}^{2}  - 15x + 50 = 0

  • {x}^{2}  - 10x - 5x + 50 = 0

  • x(x - 10) - 5(x - 10) = 0

  • (x - 5)(x - 10) = 0

  • x = 5 \:  \:  \: or \:  \:  \: x = 10

Tresset [83]3 years ago
5 0

Answer:

refer the Attachment for answer

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At Kirby Middle School, some students were surveyed to see which social media app they used the most. The results are shown belo
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44%

Step-by-step explanation:

you add up all the numbers to get the total then divied the single number (eg. 8) by the total. It will then show up as a decimal so in order to get rid of the decimal you multiply by 100. ( eg. 8 ÷50=0.16 → 0.16×100= 16 → 16% )

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3 years ago
If the domain of the square root function f(x) is x
soldier1979 [14.2K]
<span>This question, in my opinion, is not well stated. If f(x) = √x, as the question statement seems to say, then the domain is not x<7. Rather, the domain is x≥0. If f(x) is not the square root function, but say f(x) = √(7-x) then the domain is x≤7, and for this function then the appropriate answer is d), since the x-term inside the radical has a negative coefficient.</span>
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3 years ago
The radius and height of a cone are 8 cm and 15 cm respectively find its curved surface are
drek231 [11]

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8 0
3 years ago
HELP FAST PLEASE!!!
Alisiya [41]

Answer:

y = -0.75x + 9.5

Step-by-step explanation:

Equation of a circle is given as :

(x-a)^{2} + (y-b)^2 = r^{2} \\(x-6)^{2} + (y-5)^2 = 4^{2}\\x^{2} - 12x + 36 + y^{2} -10y + 25 = 16\\x^{2} - 12x  + y^{2} -10y + 45 = 0\\

Take the derivative of the above with respect to x

2x - 12 + 2y dy/dx - 10 dy/dy = 0\\\frac{dx}{dy} = \frac{6 - x}{y-5} \\At (2,8) dy/dx = (6-2)/(8-5) = 4/3\\dy/dx = 4/3\\The slope of the tangent to the circle, m = \frac{-1}{dy/dx} \\m = \frac{-1}{4/3}\\m= -0.75

The equation of the tangent is given by :

y - y_{1} = m(x - x_{1})\\ y - 8 = -0.75(x - 2)\\y - 8 = -0.75x + 1.5\\y = -0.75x + 9.5

8 0
3 years ago
Read 2 more answers
14. The cost of 10 dozen of caps is Rs.800. How many caps can bebought for Rs.200.​
kvasek [131]

Answer:

123 456lcm divison method

6 0
3 years ago
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