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Morgarella [4.7K]
4 years ago
10

What’s the evaluation to 5x(2) + x for x =3

Mathematics
2 answers:
Mashcka [7]4 years ago
5 0

Answer:

48

Step-by-step explanation:

5 x^2 +x

Let x = 3

5 * 3^2 +3

Exponents first

5 * 9+3

Multiply next

45+3

48

Eduardwww [97]4 years ago
4 0

Answer:

33

Step-by-step explanation:

If x=3, we have to plug it into 5x(2)+x.

1: Plug it into the equation

(5(3))(2)+3

2: Mutiply it all out

15(2)+3

30+3

<u>33</u>

<em>Hope this helped!  :)</em>

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A perfectly spherical scoop of ice cream has a surface area of 36π cm2 and the same diameter as the open end of the ice cream co
Ilia_Sergeevich [38]

Answer:

9.43 cm³

Step-by-step explanation:

Given that the surface area of the spherical scoop is 36π cm², we find its radius. The surface area of a sphere, A = 4πr² where r = radius

36π cm² = 4πr²

r² = 36π cm²/4π

r² = 9 cm²

r = √(9 cm²)

r = 3 cm

So, the volume of the spherical scoop of ice cream is thus V = 4πr³/3

= 4π(3 cm)³/3

= 4π(9 cm³)

= 36π cm³

The volume of the ice cream cone is V' = πr²h/3 where r = radius of cone = radius of spherical scoop = 3cm and h = height of cone = 11 cm

V' = π(3 cm)² × 11 cm/3

= 9π cm² × 11 cm/3

= 33π cm³

So, the volume of ice cream that will overflow is thus V - V' = 36π cm³ - 33π cm³

= 3π cm³

= 9.43 cm³

3 0
4 years ago
Can someone please help me
Anna11 [10]

Like the given triangle is an isosceles triangle, the value of ∠ABC is 72°.

<h3>Types of Triangles</h3>

There are 3 main classifications for triangles refer to its sides.

  • Equilateral triangle - This triangle presents all sides with the same dimensions and the all angles equal to 60°.
  • Isosceles triangle - This triangle presents two sides with the same dimensions and it has two angles with equal size.
  • Scalene triangle  - This triangle presents all sides with different dimensions and it has all angles no equal size.

The figure shows that the given triangle is an isosceles triangle because it has two equal sides (AB=AC). If it is an isosceles triangle, this triangle presents two sides with the same dimensions (AB=AC). and it has two angles with equal size(∠ACB=∠ABC).

Knowing the sum internal angles of triangle is 180°. You can write:

3x+6x+6x=180

15x=180

x=12

Like ∠ABC=6x, then ∠ABC=6*12=72°.

Read more about the types of triangles here:

brainly.com/question/24265179

7 0
3 years ago
Having problems with this, please help.<br>And don’t know where to start.
rodikova [14]

Answer:

Use the pythagorean theorem to solve the equations. If you aren't solving for c, manipulate the equation to solve for whichever side you are solving for.

4 0
3 years ago
Read 2 more answers
What measure describe a isosceles triangle
Shkiper50 [21]

it has 2 equal sides and 1 unequal side


5 0
4 years ago
PLZ HELP ASAP LAST CIRCLES
Naddik [55]
AC and AB are tangents to circle O, meaning that the angles C and B are right angles of 90 degrees. Since a quadrilateral's internal angles must sum up to 360 degrees, this means that A + B + C + O = 360
70 + 90 + 90 + O = 360
O = 110 degrees.
5 0
4 years ago
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