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3 years ago

2 km 5 m is equal to : a) 2.005 km b) 2.0005 km c)2.5 km d) 2.05 km

Mathematics

1 answer:

siniylev [52]3 years ago

5 0

I believe it's 2.05. Good luck.

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Classify the polynomial x9

ollegr [7]

Answer:

A polynomial is a combination of terms separated by

−

signs. A polynomial does not contain variables raised to negative or fractional exponents, variables in the denominator or under a radical, or any special features such as trigonometric functions, or logarithms.

Polynomial

Step-by-step explanation:

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2 years ago

Francesca is a single mother making $645 per week after taxes. She spends one-third of her money on rent and utilities and puts

AleksandrR [38]

Answer:

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Step-by-step explanation:

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2 years ago

A group of workers can plant 81 acres in 9 days. What is their rate in acres per day?

KiRa [710]

Answer: 9 acres.

Step-by-step explanation:

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2 years ago

Flying against the wind, a jet travels 2160 miles in 3 hours. Flying with the wind, same jet travels 6000 miles in 6 hours. What

marissa [1.9K]

Answer:

The velocity of jet in still air is $860miles/hour$ and velocity of wind is $140miles/hour$ .

Step-by-step explanation:

Let x be the rate of the jet in still air and y be the rate of the wind.

Given:

Velocity against wind, a jet travels 2160 miles in 3 hours.

Velocity against wind $=\frac{2160}{3} = 720 miles/hour$

Flying with the wind, same jet travels 6000 miles in 6 hours.

Flying with the wind $=\frac{6000}{6} = 1000 miles/hour$

As such its velocity against wind is $x-y$

and with wind is $x+y$ therefore

$x-y=720$ ------------(1)

$x+y=1000$ ---------------(2)

Adding equation 1 and 2.

$2x=1720$

$x=\frac{1720}{2}$

$x=860$

Put x value in equation 2

$860+y=1000$

$y=1000-860$

$y=140$

Hence velocity of jet in still air is $860miles/hour$ and velocity of wind is $140miles/hour$ .

8 0

3 years ago

What is the missing numerator? (4 points)

kozerog [31]

Answer:

$\frac{x}{7}$ - $\frac{3}{8}$ = $\frac{27\\}{56}$

Step-by-step explanation:

6 x 8 = 32

7 x 3 = 21

32 - 21 = 27

7 0

2 years ago