3 years ago

How do you solve those questions?

Mathematics

1 answer:

Viefleur [7K]3 years ago

3 0

Using 1 as example, thinking about y <= 5x-5, graph the line y = 5x-5 and the area under the line is the answer.

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Use the Pythagorean Theorem to find the missing length in the right triangle

Gelneren [198K]

Answer:

it depends

Step-by-step explanation:

If 17 is the hypotenuse

$c=17\\\\b=12\\\\a=?\\\\c^{2} =a^2+b^2\\\\17^2=a^2+12^2\\\\17^2-12^2=a^2\\\\(17-12)(17+12)=a^2\\\\5(27)=a^2\\\\a=\sqrt{9*3*5} \\\\a=3\sqrt{15} \\\\a=11.6$

if you are looking for the hypotenuse

$a=17\\\\b=12\\\\c=?\\\\a^2+b^2=c^2\\\\17^2+12^2=c^2\\\\289+144=c^2\\\\433=c^2\\\\c=\sqrt{433} \\\\c=20.8$

8 0

3 years ago

Three times a number subtracted by 3 is 20

nignag [31]

Answer:

3x - 3 = 20

Step-by-step explanation:

Times is a word that represents multiplication. A number can be represented by x.

3x - 3 = 20

Solving this:

3x - 3 = 20 1. Add 3 on both sides

3x = 23 2. Divide by 3 on both sides

x = 7 2/3

3 0

3 years ago

Which is the best way to describe |-2|?

svetoff [14.1K]

Answer:

the distance between A and C

7 0

3 years ago

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Use any model you choose to solve the story problem. The pet store owner uses one dose of algae solution in the aquarium for eac

Musya8 [376]

Your answer will be 20

5 0

3 years ago

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Perform the indicated operation.(3/a+2) + (4/a-5)

kipiarov [429]

Answer:

$\frac{7(a-1)}{(a+2)(a-5)}$

Step-by-step explanation:

To solve this operation we need to find the common multiple of both denominators and solve for a.

$\frac{3}{a+2} + \frac{4}{a-5} =\frac{3(a-5)+4(a+2)}{(a+2)(a-5)} =\frac{3a-15+4a+8}{(a+2)(a-5)} =\frac{7a-7}{(a+2)(a-5)} =\frac{7(a-1)}{(a+2)(a-5)}$

Thus, the solution is 7(a -1) / (a+2)(a-5)

8 0

4 years ago