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3 years ago

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