3 years ago

What is the value of A and B (5x + b)(5x - b) = ax^2 - 49

Mathematics

1 answer:

Ostrovityanka [42]3 years ago

6 0

Answer:

a=25

b=7

Step-by-step explanation:

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A sector has angle 2.5 radians and perimeter of 18cm. find the radius of the sector

babunello [35]

Answer:

4 cm

Step-by-step explanation:

Perimeter = 18cm

θ = 2.5 radian

s = rθ, s = Arc length

Perimeter of Sector, P = arc length, s + 2r

Perimeter = rθ + 2r

r = Radius

18cm = r(2.5) + 2r

18cm = 2.5r + 2r

18cm = 4.5r

r = 18 /4.5

r = 4

8 0

2 years ago

A building has a shadow that is 18 feet long. Will is 5 feet tall and he is standing next to the building. Will has a shadow tha

Irina-Kira [14]

5*18=90
3*x=90
X=90/3
X=30

7 0

3 years ago

Read 2 more answers

2. What is the value of x if the angles<br> within a triangle are 2x +1, 7x-2 and 3x<br> +5?

noname [10]

Answer:

$x=14.67\\$ °

Step-by-step explanation:

The sum of all the three angles of any triangle is 180°

Putting sum of all the angles given equals to 180°

$(2x+1)+(7x-2)+(3x+5)=$ $180$ °

$2x+7x+3x+1-2+5=180$ °

$12x+4=180$ °

$x=\frac{180-4}{12}$

$x=14.67\\$ °

The value of the x is found on solving the given angles of the triangles.

8 0

2 years ago

The sum of the interior angles of a hexagon is equal to the sum of six consecutive integers. What is the measure of the smallest

Dmitrij [34]

The sum of the interior angles of a hexagon is equal to sum of six consecutive numbers. Hence let the smallest consecutive number be x. Then other five numbers are x+1, x+2, x+3,x+4 and x+5. Hence the measure of the smallest angle is 117.5 cm.

4 0

3 years ago

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

VLD [36.1K]

Answer:

x=-3, x=2 or x=3,2

4 0

3 years ago