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mixas84 [53]
3 years ago
11

the lenght of a rectangle is x+5 and it,s breath is x-5the areas of a rectangle is is x raise to the power of 2-x-15 is it true

or false?
Mathematics
1 answer:
sukhopar [10]3 years ago
4 0

Answer:

False

Step-by-step explanation:

the area (A) of a rectangle is calculated as

A = length × breadth

  = (x + 5)(x - 5) ← expand factors using FOIL

  = x² - 5x + 5x - 25

 = x² - 25 ≠ x² - x - 15

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Answer:

  (-1, 3)

Step-by-step explanation:

The midpoint is the average of the end points.

  M = (H +K)/2

  M = ((-4, 10) +(2, -4))/2 = (-4+2, 10-4)/2 = (-2, 6)/2

  M = (-1, 3)

The coordinates of the midpoint are (-1, 3).

3 0
3 years ago
Convert the angle \theta=\dfrac{5\pi}{12}θ=
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Answer:

75°

Step-by-step explanation:

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3 years ago
The table shows a proportional relationship between the milliliters (ml) of red paint and milliliters of yellow
Alinara [238K]

Answer:

You didn't provide answer options. The correct answer option will be the one where the ratio of red paint to yellow paint is 3:8.

Step-by-step explanation:

To make orange, you need some amount of red and some amount of yellow. As long as you mix them in the same proportions, you will get the same orange colour, regardless of how much total paint you're using. It's the RATIO between colours that matter, not how much colour is used.

In this case we are told that to make orange you can use any of the following combinations:

10.5mL red / 28mL yellow

9mL red / 24mL yellow

7.5mL red / 20mL yellow

Just take any of these and convert into a fraction. The middle option is easiest because it uses whole numbers:

\frac{9}{24} = \frac{3}{8}

This means for every 3 units of red, you need 8 units of yellow. Whichever answer option has red and yellow in that ratio is the correct answer.

5 0
3 years ago
What’s an injective function?
Tanya [424]

Answer:

an Injective function is a function that maps distinct elements of its domain to distinct elements of its codomain. In other words, every element of the function's codomain is the image of at most one element of its domain.

Step-by-step explanation:

3 0
3 years ago
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A cylinder has a volume of 825.192 cubic centimeters. The diameter of the cylinder is 12 cm. What is the height of the cylinder?
Reika [66]

Answer:

Step-by-step explanation:

diameter = 12 cm

r = 12 ÷2 = 6cm

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\boxed{Volume=\pi r^{2}h}

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                  h = 7.3 cm

7 0
3 years ago
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