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3 years ago

PLEASE HELP ASAP I WILL MARKS AS BRAINLIEST PLUS 15 POINTS PLEASE

Mathematics

1 answer:

valentinak56 [21]3 years ago

6 0

I believe it’s the second option, f=14 g=14 with the square root of 3

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Write the quadratic equation whose roots are −2 and 6, and whose leading coefficient is 3

MaRussiya [10]

Answer:

3(x + 2)(x - 6) = 0

Step-by-step explanation:

We see that if x + 2 = o then x= -2

and if x - 6 = 0, x = 6.

4 0

3 years ago

A cylindrical roller 2.5 m in length, 1.5 m in radius when rolled on a road was found to cover the area of 16500 m2 . How many r

eduard

Answer:

701 revolutions

Step-by-step explanation:

Given: Length= 2.5 m

Radius= 1.5 m

Area covered by roller= 16500 m²

Now, finding the Lateral surface area of cylinder to know area covered by roller in one revolution of cylindrical roller.

Remember; Lateral surface area of an object is the measurement of the area of all sides excluding area of base and its top.

Formula; Lateral surface area of cylinder= $2\pi rh$

Considering, π= 3.14

⇒ lateral surface area of cylinder= $2\times 3.14\times 1.5\times 2.5$

⇒ lateral surface area of cylinder= $23.55 \ m^{2}$

∴ Area covered by cylindrical roller in one revolution is 23.55 m²

Next finding total number of revolution to cover 16500 m² area.

Total number of revolution= $\frac{16500}{23.55} = 700.6369 \approx 701$

Hence, Cyindrical roller make 701 revolution to cover 16500 m² area.

8 0

3 years ago

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user100 [1]

False.

Right triangles do not have to be congruent.

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