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3 years ago

Solve the proportion r/72= 3/9

Mathematics

1 answer:

ASHA 777 [7]3 years ago

8 0

Answer:

$r=\frac{7}{3}$

Step-by-step explanation:

When given the equation

$\frac{r}{72} =\frac{3}{9}$

We must multiply each side by 72 in order to isolate r.

$r =\frac{3}{9}*\frac{7}{1} \\\\r=\frac{21}{9} \\\\r=\frac{7}{3}$

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nexus9112 [7]

Answer:

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Step-by-step explanation:

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3 years ago

10) A rhombus has a<br> diagonal 8.6 mm long<br> and an area of 81.7 mm. what is the<br> perimeter?

BaLLatris [955]

Answer:

P=41.72

Step-by-step explanation:

S=ACxDB/2

81.7=8.6xDB/2

81.7=4.3xDB|:4.3

19(mm)=DB

DO=19/2=9.5

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a²+b²=c² (DO²+OC²=DC²)

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6 0

2 years ago

a parabolic lamp is facing due east. The bulb (located at the focus) is 8 inches away from the vertex (located at the origin). t

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Answer:

3 1/8 inches

Step-by-step explanation:

For focus-vertex distance p, the equation of the parabola can be written ...

y = x^2/(4p)

Here, we have p=8. We want to find the value of y when x=10 (the radius of the dish). That is ...

y = (10^2)/(4·8) = 100/32 = 3 1/8

The dish is 3 1/8 inches deep.

7 0

2 years ago

Solve the proportion r/72= 3/9​

Solve the proportion r/72= 3/9