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Sophie [7]
3 years ago
6

HELP please.

Mathematics
1 answer:
Delvig [45]3 years ago
3 0

Answer:

Q1: \frac{3}{4}

Q2: \frac{83}{100}

Step-by-step explanation:

Q1: 12 : 16 = 3 : 4 = \frac{3}{4}

Q2: 8.3 : 10 = \frac{83}{100}

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The given line passes through the points (-1,-1) and (4.1).
ira [324]

Answer:

(-1,-1) and (4.1).

                                     1+1

slope of the line: m= ------- = 2/5

                                     4+1

the slope of the perpendicular line:  -5/2  and   point  (-1,3)

(y-3) = -5/2(x+1)

6 0
3 years ago
The intensity of a light source at a distance is directly proportional to the strength of the source and inversely proportional
jolli1 [7]

Answer:

x=\frac{16}{\sqrt[3]{2}+1 }

Step-by-step explanation:

Q= illumination

I = intensity

Q= I/d^2

Q_total = \frac{I_1}{d_1^2}+\frac{I_2}{d_2^2}

= \frac{I}{x^2}+\frac{2I}{(16-x)^2}

now Q' = 0

⇒I{-\frac{2}{x^3}}+\frac{4}{(16-x)^3}

x=\frac{16}{\sqrt[3]{2}+1 }

[/tex]\frac{1}{x^3} = \frac{2}{(16-x)^3}

x=\frac{16}{\sqrt[3]{2}+1 }

is the required point

5 0
3 years ago
Solve for R. 3 + 3r > 9
Nostrana [21]

Answer:

r > 2

Step-by-step explanation:

9-3 = 6

6/3 = 2

Have a good day :)

7 0
3 years ago
Nicole earns $40,768 per year, what are her weekly gross earnings?
Karolina [17]
($40768/y)(y/52w)=$784/week

Seven hundred and eighty-four dollars per week.
4 0
3 years ago
Read 2 more answers
How would I figure out what L= is if V=168 yd W= 7 yd H= 3 yd?
Mariulka [41]
We can assume that the shape is a rectangular prism by the given dimensions

Volume of a rectangular prism
Volume = Area of Base × Height of prism
             = Length × Width × Height of prism
Substitute!
168 = L × 7 × 3
168 = L × 21
Divide 21 on either sides to isolate L

\frac{168}{21} = \frac{L*21}{21}
21 and 21 cancels out

8 = L
L = 8 yd
6 0
3 years ago
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