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3 years ago

Write an equation. Let x be the unknown number.

Mathematics

2 answers:

dolphi86 [110]3 years ago

3 0

Answer:

Unknown number, x=-4

Step-by-step explanation:

Forming the equation from the information provided above.

9=2x+17

If we solve for the unknown number, we first collect like terms together.

2x=9-17

2x=-8

Divide both sides of the equal sign by 2 the coefficient of x

x=-4

pentagon [3]3 years ago

3 0

Answer:

x = -4

Explanation:

We are given the following statement which we are to translate into a mathematical equation and then solve it:

'nine is seventeen more than two times a number'

Assuming $x$ to be the unknown number, this can be written as:

$9 = 2 x + 1 7$

Solving for x:

$2 x = 9 - 1 7$

$2 x = - 8$

$x=\frac{-8}{2}$

$x=-4$

Therefore, the unknown number is -4.

Read more about parabola at:

brainly.com/question/1480401

#SPJ1

4 0

1 year ago

Find the Total Surface area of a Pyramid. Its base is a regular hexagon 4cm on a side. its height is 8 cm. Round off to nearest

oksano4ka [1.4K]

Answer:

The total surface area of a regular hexagonal pyramid is 146.2 cm².

Step-by-step explanation:

The base is a regular hexagon 4cm on a side. its height is 8 cm.

The total surface area of a pyramid with regular hexagon base

$A=\frac{3\sqrt{3}}{2}a^2+3a\sqrt{h^2+\frac{3a^2}{4}$

Where, a represents the base edge and h represents the height of the pyramid.

The area of given regular hexagonal pyramid is

$A=\frac{3\sqrt{3}}{2}(4)^2+3(4)\sqrt{(8)^2+\frac{3(4)^2}{4}$

$A=\frac{3\sqrt{3}}{2}(16)+12\sqrt{64+12}$

$A=24\sqrt{3}+12\sqrt{76}$

$A=146.182794027$

$A=146.2$

The total surface area of a regular hexagonal pyramid is 146.2 cm².

8 0

3 years ago

I need this asap pleasee!

miv72 [106K]

Answer:

The answers are below

Step-by-step explanation:

The greater sign is > and the less then symbol is <

Using the red arrows on the number line, you can tell which one is bigger or less. The dot is colored in so it has to have a line under it. So for the first one (top, left), The red arrow is pointing to the right side meaning x is bigger than 3. Therefore x ≥ 3.

In the next one (top, right) the arrow is pointing to the negative side so that one must be less than 3. The dot is also colored in meaning it is: x ≤ 3

In the next one (bottom, left) the arrow is pointing to the right, the dot not colored in, so it has no line. Therefore it is x > 3

Last one (bottom right) the arrow is pointing left, dot is white meaning that the answer is x < 3

If you're wondering what the open dots and closed dots mean:

An open dot is used to show that the ray's endpoint is not a component of the solution when the inequality is "strict" ( < or >).

A closed dot is used to denote that the endpoint is a component of the solution for the other types of inequalities (≥ and ≤ ).

6 0

1 year ago

Suppose you filled the ice-cream cone shown with your favorite ice-cream. Which measurement BEST describes the

Shalnov [3]

Amount of ice-cream in the cone = 6.3 in³

Solution:

Given data:

Diameter of the cone = 2 in

Radius of the cone = 2 ÷ 2 = 1 in

Height of the cone = 6 in

The value of π = 3.14

Volume of the cone = $\frac{1}{3} \pi r^2 h$

$$=\frac{1}{3}\times 3.14\times 1^2\times 6$

= 6.3

Volume of the cone = 6.3 in³

Amount of ice-cream in the cone = 6.3 in³

6 0

2 years ago

Read 2 more answers

Question choices: A: I, IV B: II, III, IV C: III, IV D: II, III

gulaghasi [49]

0Answer:

Step-by-step explanation:

Find the zeros by letting y = 0 , that is

x² - x - 6 = 0 ← in standard form

(x - 3)(x + 2) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 3 = 0 ⇒ x = 3

x + 2 = 0 ⇒ x = - 2

Since the coefficient of the x² term (a) > 0

Then the graph opens upwards and will be positive to the left of x = - 2 and to the right of x = 3 , that is in the intervals

(-∞, - 2) and (3, ∞ ) → option A

4 0

2 years ago