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3 years ago

How do you solve 9+ (-3)=

Mathematics

1 answer:

PSYCHO15rus [73]3 years ago

4 0

The parenthesis's are only there to keep the two properties organized. The answer would be 6 since its just 9 minus 3 .

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What is the equation for this function?

ki77a [65]

Y=x to the second power

6 0

2 years ago

Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AC =16 and DC=5 what is the length of BC in the simplest ra

Nana76 [90]

The length of BC is $4 \sqrt{5}$ .

Solution:

Given ABC is a right triangle.

AC is the hypotenuse and BD is the altitude.

AB and BC are legs of the triangle ABC.

AC = 16 and DC = 5

<u>Leg rule of geometric mean theorem:</u>

$\frac{\text { hypotenuse }}{\text { leg }}=\frac{\text { leg }}{\text { part }}$

$\Rightarrow \frac{AC}{BC}=\frac{BC}{DC}$

$\Rightarrow \frac{16}{x}=\frac{x}{5}$

Do cross multiplication.

$\Rightarrow 16\times 5 = x\times x$

$\Rightarrow 80= x^2$

$\Rightarrow 16\times 5= x^2$

Taking square root on both sides.

$\Rightarrow \sqrt{16\times 5} = \sqrt{x^2}$

$\Rightarrow \sqrt{4^2\times 5} = \sqrt{x^2}$

square and square roots get canceled, we get

$\Rightarrow 4\sqrt{ 5} = x$

The length of BC is $4 \sqrt{5}$ .

7 0

2 years ago

What is the exact distance between points a(-2, 7) and b(6,-5)

shutvik [7]

Answer:

14.4222

Step-by-step explanation:

Distance between two points = √(x₂ – x₁)² + (y₂ – y₁)²

Distance between two points = √(6 – -2)² + (-5 – 7)²

√(6 – -2)² + (-5 – 7)²

√8² + (-12)²

√64 + 144

√208

14.4222

I hope this helps

4 0

3 years ago

Read 2 more answers

What is the value of 3.2n when n=5

Lady bird [3.3K]

3.2n=3.2*5

3.2*5=16 the answer is 16

Hope this helps, have a great day!!

:)

7 0

2 years ago

Hello! How to sketch the graph?

Alenkasestr [34]

Answer:

Draw your y and x axis , the y axis is going to be a vertical line while the x axis is going to be a horizontal line

6 0

2 years ago