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3 years ago

There are _____ min in two fifth of 2 hours

Mathematics

1 answer:

Setler79 [48]3 years ago

7 0

Answer:

48mins.

Step-by-step explanation:

$\frac{2}{5} \times 120 = 0.4 \times 120 = 48$

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Find the surface area of the hexagonal prism

arsen [322]

Answer:

$4,636.8 \: {in}^{2}$

Step-by-step explanation:

Surface area of the hexagonal prism

= Area of base * Height

= 6*Area of one triangle *height

$= 6( \frac{1}{2} \times 8 \times 6.9) \times 28 \\ \\ = 6(4 \times 6.9)28 \\ \\ = 6 \times 27.6 \times 28 \\ \\ = 4,636.8 \: {in}^{2}$

5 0

3 years ago

Choose the correct vertex of the function f(x) = x2 - X + 2.

8_murik_8 [283]

Answer:

The vertex of the function is $(\frac{1}{2}, \frac{7}{4})$

Step-by-step explanation:

Vertex of a quadratic function:

Suppose we have a quadratic function in the following format:

$f(x) = ax^{2} + bx + c$

It's vertex is the point $(x_{v}, y_{v})$

In which

$x_{v} = -\frac{b}{2a}$

$y_{v} = -\frac{\Delta}{4a}$

Where

$\Delta = b^2-4ac$

If a<0, the vertex is a maximum point, that is, the maximum value happens at $x_{v}$ , and it's value is $y_{v}$ .

f(x) = x² - X + 2.

Quadratic equation with $a = 1, b = -1, c = 2$

$\Delta = b^2-4ac = (-1)^2 - 4(1)(2) = 1 - 8 = -7$

$x_{v} = -\frac{(-1)}{2} = \frac{1}{2}$

$y_{v} = -\frac{-7}{4} = \frac{7}{4}$

The vertex of the function is $(\frac{1}{2}, \frac{7}{4})$

4 0

3 years ago

HELP PLEASE !!!! Will give points (9)

schepotkina [342]

Your answer is
B) y= 5x +3
Hope this helps!!
:)

6 0

3 years ago

Ted says that 3/10 multiplied by 100 equals 300000 is he correct

Andru [333]

Yes he is correct because u do have to multiple it

5 0

4 years ago

What is -15x=0 solution

cricket20 [7]

Here is the method for solving that equation:

Step #1: Write the equation:

-15x = 0

Step #2: Divide each side of the equation by -15 :

<u>x = 0</u>

3 0

4 years ago