2 years ago

The sum of four times a number and eight is between 0 and 12

Mathematics

1 answer:

Alex2 years ago

5 0

1

treat 1 as x.
4x +8 = 12

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Identify a pattern in the list of numbers. Then use this pattern to find the next number.

dimulka [17.4K]

Answer:

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Step-by-step explanation: 1510

3 0

2 years ago

Find the value of x on this triangle

blondinia [14]

Look at the picture.

ΔABD and ΔBCD are similar, therefore:

$\dfrac{y}{5}=\dfrac{11}{y}\ \ \ |\cross\ multiply\\\\y^2=55\to y=\sqrt{55}$

Use Pythagorean theorem:

$x^2=5^2+(\sqrt{55})^2\\\\x^2=25+55\\\\x^2=80\to x=\sqrt{80}\\\\x=\sqrt{16\cdot5}\\\\x=\sqrt{16}\cdot\sqrt5\\\\\boxed{x=4\sqrt5}$