3 years ago

Help me!!!!! Simplify (7)(-6).

Mathematics

1 answer:

mash [69]3 years ago

4 0

Answer:

-42

Step-by-step explanation:

Multiply

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aivan3 [116]

Pythagoras Theorem:
$\boxed { \boxed {a^2 + b^2 = c^2 \beta }}$

Apply Pythagoras Theorem:

a² + 6² = 11²

a² = 11² - 6²

a²= 85

a = √85

a = 9.22 (nearest hundredth)

Answer: RT = 9.22 cm

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3 years ago

What is the answer to <br> 2x=24

Digiron [165]

Answer:

Step-by-step explanation:

you divide 24 by 2 because it is multiplication, and the opposite is division.

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nalin [4]

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What is the value of the expression 3² .(2³+4)/2²

Ber [7]

Answer:

Step-by-step explanation:

3^2(2^3+4)/2^2

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3 years ago

Use the quadratic formula to solve x² + 9x + 10 = 0.<br><br> What are the solutions to the equation?

jok3333 [9.3K]

Answer:

$-1.30\ and\ -7.70$ (2 decimal places)

Step-by-step explanation:

Quadratic Formula: $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

-----------------------------------------------

$x^2+9x+10=0$

Plug in values:

$x=\frac{-9\pm \sqrt{9^2-4\cdot \:1\cdot \:10}}{2\cdot \:1}$

First value of x:

$x=\frac{-9+\sqrt{41}}{2}=-1.30$ (2 decimal places)

Second value of x:

$x=\frac{-9-\sqrt{41}}{2}=-7.70$ (2 decimal places)

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3 years ago