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Katen [24]
2 years ago
14

7. Evaluate the expression ab for a = 8 and b=5.

Mathematics
1 answer:
Neporo4naja [7]2 years ago
8 0

Answer:

40

Step-by-step explanation:

First, we must know that ab is the same as:

a × b

Now, since a is given as 8, we can substitute a with 8. This is shown below:

ab = 8 × b

Similarly, b is given as 5. So, we can substitute b with 5:

ab = 8 × 5

With this, we can now evaluate ab as shown below:

ab = 8 × 5

= 40

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ryzh [129]

The triangle is not a right triangle. This is because the sum of the square of the two shorter lengths is not equal to the square of the longest length.

<h3>Is the triangle a right triangle?</h3>

In order to determine if the triangle is a right triangle, Pythagoras theorem would be used.

The Pythagoras theorem: a² + b² = c²

where a = length

b = base

c = hypotenuse

12 ² + 24²

= 144 + 576 = 720

29² = 841

To learn more about Pythagoras theorem, please check: brainly.com/question/14580675

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7 0
1 year ago
The length of a rectangle is given by the function l(x)=2x+1, and the width of the rectangle is given by the function w(x)=x+4.
Harlamova29_29 [7]

Answer:

a(x)=2x^2+9x+4

Step-by-step explanation:

We have been given the length and width, as well as the formula to find the area:

Length: 2x + 1

Width: x + 4

A = l * w

A = (2x + 1)(x + 4)

2x^2 + 8x + x + 4

We can add like terms now:

2x^2 + 9x + 4

Our area is 2x^2 + 9x + 4

Our answer would be a(x)=2x^2+9x+4

7 0
2 years ago
Read 2 more answers
A company that offers tubing trips down a river rents tubes for a person to use and “cooler” tubes to carry food and water. A gr
Elan Coil [88]
Let us represent number of one person tubes rented by x  and, number of cooler tubes rented by y    As per the situation, total tubes are 15, hence  x + y = 15 equation 1    Also, total expenditure on tubes is $270, therefore  20x + 12.5y = 270 equation 2    Linear equation written above, equation 1 and equation 2 represent given situation. Now, let us solve these equations to find number of tubes rented    Multiplying equation 1 by 20 and subtracting equation 2 from it, we get    20x + 20y - 20x -12.5y = 300 - 270    7.5y = 30  y = 4    and from equation 1, x + 4 = 15 gives, x = 11    Therefore, number of person tubes = 11, number of cooler tubes = 4
7 0
2 years ago
Read 2 more answers
Please solve<br> Will mark Brainly
Firlakuza [10]

Answer:

x = 23

Step-by-step explanation:

5x - 9 and 2x + 60 are corresponding angles and are congruent , so

5x - 9 = 2x + 60 ( subtract 2x from both sides )

3x - 9 = 60 ( add 9 to both sides )

3x = 69 ( divide both sides by 3 )

x = 23

4 0
1 year ago
Someone please help me answer this!!!
Norma-Jean [14]

Answer:

n = 9

Step-by-step explanation:

Using index laws, multiply 3 into 3 to get 9

(x3)^3 = x^n

x^9 = x^n

9 = n

4 0
2 years ago
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