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Free_Kalibri [48]
2 years ago
8

Help me with this please

Mathematics
1 answer:
SashulF [63]2 years ago
6 0

Answer:

2 hours and 3 minutes to convert

Step-by-step explanation:

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What is the answer to this equation <br><br> h(x)= -9 - x; h(2k-5
dezoksy [38]

The answer is h(2k - 5) = -4 - 2k

Step-by-step explanation:

In a function f(x) = y, we can find the value of y for any given value of x

Examples:

  • If f(x) = 2x - 3, and we need to find f(3), that means substitute x by 3 in f(x), so f(3) = 2(3) - 3 = 6 - 3 = 3, that means f(x) = 3 at x = 3
  • If f(x) = 8 - 5x, and we need to find f(a - 2), substitute x by (a - 2) in f(x), so f(a - 2) = 8 - 5(a - 2) = 8 - 5a + 10 = 18 - 5a, that means f(a - 2) = 18 - 5a at x = a - 2

∵ h(x) = -9 - x

- We need to find h(2k - 5), that means substitute x by 2k - 5

∵ x = 2k - 5

∴ h(2k - 5) = -9 - (2k - 5)

- Simplify the right hand side

∴ h(2k - 5) = -9 - 2k - (-5)

- Remember (-)(-) = (+)

∴ h(2k - 5) = -9 - 2k + 5

- Add the like terms in the right hand side

∴ h(2k - 5) = (-9 + 5) - 2k

∴ h(2k - 5) = -4 - 2k

The answer is h(2k - 5) = -4 - 2k

Learn more:

You can learn ore about the functions in brainly.com/question/5337932

#LearnwithBrainly

7 0
3 years ago
What is the rate of change of y= -2x-1
blsea [12.9K]

The rate of change is -2

Step-by-step explanation:

The slope-intercept form of a linear equation is y = m x + b, where

  • m is the slope which represents the rate of change
  • b is the y-intercept which represent the initial value (value y at x = 0)

∵ y = -2x - 1

- The equation in the slope-intersect form, compare it with

    the form above

∴ m = -2

∴ b = -1

∵ m represents the rate of change

∴ The rate of change is -2

∵ b represents y at x = 0

∴ The y-intercept is -1

The rate of change is -2

Learn more:

You can learn more about the linear equation in brainly.com/question/1284310

#Learnwithbrainly

4 0
3 years ago
Find the surface area of a hexagonal prism if the length of each side of the hexagonal base is 4 cm and the height is 7 cm.
olya-2409 [2.1K]

The surface area of a hexagonal prism willl be 251.13844 cm².

<h3>What is the surface area?</h3>

The total land area of all the faces of a three-dimensional object is its surface area. When we wish to wrap something in real life, we employ the notion of surface areas of distinct things.

A=6ah+3√3a²

A=6×4×7+3√3×4²

A≈251.13844

Hence the surface area of a hexagonal prism willl be 251.13844 cm².

To learn more about the surface area, refer to the link;

brainly.com/question/2835293

#SPJ1

3 0
2 years ago
The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 60 o
Gala2k [10]

Answer:

Step-by-step explanation:

Given that the Acme Company manufactures widgets, which have a mean of 60 ounces and a standard deviation of 7 ounces

We know that 95% of the area lie between -2 and 2 std deviations from the mean.

i.e. Probability for lying in the middle of 95%

Z score (60+7(-2), 60+7(2))\\=(46, 74)

Between 46 and 74 oz.

b) Between 12 and 57

convert into Z score

(\frac{12-60}{7}

P(-6.86<z<-0.43)

=0.5-0.1664=0.3336

c) X<30 gives Z<-4.83

i.e. P(X<30) =0.00

3 0
3 years ago
How do I evaluate 564÷24 with a fraction or decimal
Butoxors [25]
564/24 equals to 47/2 or 23.5
4 0
3 years ago
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