3 years ago

If the speed limit on a highway is 70 miles per hour, about how fast is this in miles per minute?

Mathematics

1 answer:

lara31 [8.8K]3 years ago

5 0

70mi/1hr x 1hr/60min x 1min/60sec= .0194/1sec

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What is the solution to the system of equations?

motikmotik

Answer:

a. it has no solution

b. you can only substitute by making either the 'x' or 'y' the subject of either of the two equations.

Step-by-step explanation:

3x - 9y = -13.............. eqn 1

x - 3y = -7................... eqn 2

from eqn 2

x - 3y = -7, substitute by making 'x' the subject

x = -7 + 3y.................. eqn 3

put eqn 3 into eqn 1

3x - 9y = -13

3( -7 + 3y) - 9y = -13

-21 + 9y - 9y = -13

9y - 9y = -13 + 21

0 = 8, which is not possible.

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3 years ago

What is the exact value of the expression the square root of 486. − the square root of 24. + the square root of 6.? Simplify if

Rina8888 [55]

19.5959179422
or if u round to the nearest whole #--> 20

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3 years ago

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What is the relationship between the sine and cosine of the complementary angles in this diagram? drag and drop the answers into

Leno4ka [110]

Answer:

Step-by-step explanation:

7 0

2 years ago

2. 6e-4k - 10 - 4 = 63

snow_lady [41]

Answer:

k=-\frac{-6e+77}{4}

Step-by-step explanation:

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3 years ago

The radius of a circle is 2 meters. What is the circle's circumference?

PilotLPTM [1.2K]

Circumference of circle having radius 2 meters is 12.56 meters

Step-by-step explanation:

Radius of circle = 2 m

Circumference of circle = ?

The formula used to find Circumference of circle (C) is:

$C=2\pi r$

Putting values and finding circumference

$C=2\pi r\\C=2*3.14*2\\C=4*3.14\\C=12.56\,\,meters$

So, Circumference of circle having radius 2 meters is 12.56 meters

Keywords: Circumference of circle

Learn more about Circumference of circle at:

#learnwithBrainly

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3 years ago