3 years ago

A scale drawing uses the scale 3 in =20ft find the missing measure 57 in = ft

1 answer:

8 0

If 3 inch....................................20 ft
?inc...........................................57 feet

(57*3)/20=171/20=8.55 inch

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Find the length of side x in simplest radical from with a rational denominator.

kozerog [31]

Answer:

Step-by-step explanation:

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3 years ago

Fill in Sin, Cos, and tan ratio for angle x. <br> Sin X = 4/5 (28/35 simplified)

Fantom [35]

Answer:

Given: $\sin(x) = (4/5)$ .

Assuming that $0 < x < 90^{\circ}$ , $\cos(x) = (3/5)$ while $\tan(x) = (4/3)$ .

Step-by-step explanation:

By the Pythagorean identity $\sin^{2}(x) + \cos^{2}(x) = 1$ .

Assuming that $0 < x < 90^{\circ}$ , $0 < \cos(x) < 1$ .

Rearrange the Pythagorean identity to find an expression for $\cos(x)$ .

$\cos^{2}(x) = 1 - \sin^{2}(x)$ .

Given that $0 < \cos(x) < 1$ :

$\begin{aligned} &\cos(x) \\ &= \sqrt{1 - \sin^{2}(x)} \\ &= \sqrt{1 - \left(\frac{4}{5}\right)^{2}} \\ &= \sqrt{1 - \frac{16}{25}} \\ &= \frac{3}{5}\end{aligned}$ .

Hence, $\tan(x)$ would be:

$\begin{aligned}& \tan(x) \\ &= \frac{\sin(x)}{\cos(x)} \\ &= \frac{(4/5)}{(3/5)} \\ &= \frac{4}{3}\end{aligned}$ .

7 0

2 years ago

Anyone please help me i'm not sure how to do this and please give clear instructions

rewona [7]

-10= 7X - 42
-10 + 42 = 7X
32 = 7X
X = 32/7
X = 4.57

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3 years ago

Bananas are 5 for 79 cents . Isaiah bought 7 bananas. How many did Isaiah spend?

Margarita [4]

C it’s always c. When in doubt always chose c

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3 years ago

A boat costs $12,050 and decreases in value by 12% per year. How much will the boat be worth after 9 years?

andreyandreev [35.5K]

B $3,813.56 is the correct answer

1 year = $10,604
2 years = $9,331.52
3 years = $8,211.74
4 years = $7,226.33
5 years = $6,359.17
6 years = $5,596.07
7 years = $4,924.54
8 years = $4,333.60
9 years = $3,813.56

3 0

3 years ago

Read 2 more answers