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3 years ago

Of a certain road 7.264km are down hill, 3.873km are up hill and 6.89 are level.what is the length of the road pls urgent tnx

Mathematics

1 answer:

Kitty [74]3 years ago

6 0

Answer:

18.027

Step-by-step explanation:

7.264+3.873+6.89

18.027

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Solve (x – 3)2 = 49. Select the values of x.

PIT_PIT [208]

Answer:

Step-by-step explanation:

$(x - 3)2 = 49 \\ \frac{(x - 3)2}{2} = \frac{49}{2} \\ x - 3 = 24.5 \\ x - 3 + 3 = 24.5 + 3 \\ x = 27.5 \\$

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2 years ago

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A triangle has a height that is increasing at a rate of 2 cm/sec and its area is increasing at a rate of 4 cm2/sec. Find the rat

lesya [120]

Answer:

The value of rate of which the base is changing $\frac{dB}{dt}$ = - 3 $\frac{cm}{s}$

Step-by-step explanation:

Area = 20 $cm^{2}$

height = 4 cm

$\frac{dH}{dt} = 2 \frac{cm}{sec}$

$\frac{dA}{dt} =$ $2 \ \frac{cm^{2} }{sec}$

we know that area of the triangle is given by

$A= \frac{1}{2} B H$

$B = \frac{2A}{H}$

$B = \frac{2 (20)}{4}$

B = 10 cm

Rate of change of area is given by

$\frac{dA}{dT} = \frac{1}{2} [B\frac{dH}{dt} + H \frac{dB}{dt} ]$

4 = 0.5 [10 × 2 + 4 $\frac{dB}{dt}$ ]

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This is the value of rate of which the base is changing.

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3 years ago

It is possible to find linear factors of any polynomial. true or false

baherus [9]

I think its true, i may be wrong tho.

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3 years ago

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9÷(x-11)=3. Solve for X. This is worth 60 pts

Molodets [167]

Answer:

x=2.45

Step-by-step explanation:

9/(x-11)=3

x9 x9 ( multiply by 9 on each side)

x-11= 27

/11 /11 ( divide by 11 on each side)

x=2.45

Happy Holidays :)

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3 years ago

A ballon rises 9 meters every 3 seconds. How many will the ballon rise in 2 minutes. A) 360m, B)120m, C)54m, D)1620.

Doss [256]

Answer:

A. 360 Meters

Step-by-step explanation:

There are 120 seconds in 2 minutes and if a balloon is rising 9 meters every 3 seconds you'll have to take 120 divided by 3 which is 40. You'll then take 40 and times it by 9 which is 360.

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3 years ago