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3 years ago

Please help me with this question.Thanks!

Mathematics

2 answers:

Wewaii [24]3 years ago

4 0

X = 6

There is no explanation needed

~ Meg ❤️ x

Tpy6a [65]3 years ago

3 0

Answer:

X = 6

Step-by-step explanation:

None needed. It's very simple.

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What two number multiple to get -72 and add up to -6

hammer [34]

Answer:

6 and -12

Step-by-step explanation:

6×-12=-72

6+(-12)=-6

×^2 -6x-72=0

(x+6) (x-12)

x^2-6x-72=(x+6) (X-12)

7 0

3 years ago

H E L P A S A P ( 20 pts!!! reee- will mark u the brainliest if u explain this properly ^-^)

lions [1.4K]

Answer:

6(2n-3)

Step-by-step explanation:

Factor out 6 from the expression

5 0

3 years ago

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I need to know the answer to the question with the circle

KATRIN_1 [288]

___________________________

◆ AREA RELATED TO CIRCLES ◆ ___________________________

As shown in the figure ,

Radius of circle = 5 cm

Side of square = 2 × (Radius of inscribed circle)

Side of square = 2 × 5 cm

Side of square = 10 cm = a

___________________________

Now ,
Area of shaded region = (Area of square) - ( Area of inscribed circle )

Area of shaded region =
${a}^{2} - \pi {r}^{2}$

Area of shaded region =
${10}^{2} - \frac{22}{7} \times {5}^{2}$

Area of shaded region = 100 - 78.571

$= 21.428 \: ans.$

7 0

3 years ago

The left and right page numbers of an open book are two consecutive integers whose sum is 389. Find these page numbers

Nadya [2.5K]

Step-by-step explanation:

Maybe the page numbers can be 143 and 246

143 + 246 = 389

8 0

3 years ago

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You bicycle along a straight flat road with a safety light attached to one foot. Your bike moves at a speed of 15 km/hr and your

Viefleur [7K]

Answer:

x(t) = ( 4.167 t + 0.2 cos (2πt))

y(t) = ( 0.3 - 0.2 sin (2πt))

b) the foot have to be 3.32 rev/sec faster

Step-by-step explanation:

Given that:

the speed of the bike = 15 km/hr = 15 × 1000/3600 (m/sec) = 4.167 m/sec

radius of the circle when the foot moves = 20 cm = 0.2 m

radius of the circle above the ground = 30 cm = 0.3 m

Let assume that:

x(t) should represent the vector along the horizontal moment

y(t) should be the vector along the vertical moment

The initial component will be ( 0, 0.3)

We know that the radius of the circle is given as 0.2 m, So the vector of the circle can be written as (0.2 cos t , 0.2 sin t )

Also, the foot makes one revolution in a second, definitely the frequency of the revolution = 1 and the vector for the circle is ( 0.2 cos (2πt), -0.2 sin (2πt)), due to the fact that the foot moves clockwise.

Thus, adding all the component together ; we have:

(x(t), y(t)) = (0,0.3)+(4.167 t , 0)+(0.2 cos (2πt), -0.2 sin (2πt))

(x(t), y(t)) = (4.167 t + 0.2 cos (2πt), 0.3 - 0.2 sin (2πt))

Hence; the parametric equations are:

x(t) = ( 4.167 t + 0.2 cos (2πt))

y(t) = ( 0.3 - 0.2 sin (2πt))

The linear speed of rotation is :

15km/hr = 15 × 100, 000/3600 (cm/sec)

= 416.7 cm/sec

The rotational frequency is :

= 416.7/2πr

= 416.7/2(3.14 × 20)

= 3.32 rev/sec

Hence, the foot have to be 3.32 rev/sec faster in rotating if an observer standing at the side of the road sees the light moving backward.

4 0

4 years ago

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