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meriva
3 years ago
15

Please help, im so confused!

Mathematics
1 answer:
MariettaO [177]3 years ago
8 0

Answer:

D (1,1)

Step-by-step explanation:

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A stalk of corn casts a shadow of 117 inches, while a 8-inch ear of corn casts a shadow of 13 inches. Use similar triangles to f
Gemiola [76]

Answer: 72

We can use ratios

117 inches / 13 inches = 9

The corn cast shadow is 9 times bigger than the example we are given.

9 * 8 = <u><em>72</em></u>

7 0
1 year ago
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A student on a piano stool rotates freely with an angular speed of 2.85 rev/s . The student holds a 1.50 kg mass in each outstre
Vlad1618 [11]

Answer:r'=0.327 m

Step-by-step explanation:

Given

N=2.85 rev/s

angular velocity \omega =2\pi N=17.90 rad/s

mass of objects m=1.5 kg

distance of objects from stool r_1=0.789 m

Combined moment of inertia of stool and student =5.53 kg.m^2

Now student pull off his hands so as to increase its speed to 3.60 rev/s

\omega _2=2\pi N_2

\omega _2=2\pi 3.6=22.62 rad/s

Initial moment of inertia of two masses I_0=2mr_^2

I_0=2\times 1.5\times (0.789)^2=1.867

After Pulling off hands so that r' is the distance of masses from stool

I_0'=2\times 1.5\times (r')^2

Conserving angular momentum

I_1\omega =I_2\omega _2

(5.53+1.867)\cdot 17.90=(5.53+I_o')\cdot 22.62

I_0'=1.397\times 0.791

I_0'=5.851

5.53+2\times 1.5\times (r')^2=5.851

2\times 1.5\times (r')^2=0.321

r'^2=0.107009

r'=0.327 m

7 0
3 years ago
Plz help thanks sm!!!!
Snowcat [4.5K]

n = a number

2n = twice a number

2n - 7 = seven less than twice a number


4 0
4 years ago
Stephanie planted a home garden. She planted 2 rows of tomatoes with 4 tomato plants in each row. She also planted squash in row
natulia [17]

Answer:

B

Step-by-step explanation:

it is known that 8 tomato plants were planted in total

( 2 rows with 4 plants each equal to 8 plants in total)

however there is X amount of rows of squash with 7 plants in each row

therefore in an equation it would be  y= 7x+8

3 0
4 years ago
Find all the missing values to make the equation true
Georgia [21]

The missing value in the logarithm are as follows:

  • log₃ 7 - log₃ 2 = log₃ (7 / 2)
  • log₉ 7 + log₉ 4 =  log₉ 28
  • log₆ 1 / 81  =  
  • - 4 log₆ 3

<h3>How to solve logarithm?</h3>

Using logarithm rule,

logₐ b - logₐ c = logₐ (b / c)

logₐ b + logₐ c = logₐ (b × c)

Therefore,

log₃ 7 - log₃ 2 = log₃ (7 / 2)

log₉ 7 + log₉ 4 = log₉ (7 × 4) =  log₉ 28

log₆ 1 / 81 = log₆ 81⁻¹ = log₆ 3⁻⁴ =  - 4 log₆ 3

learn more on logarithm here: brainly.com/question/24515212

#SPJ1

4 0
2 years ago
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