2 years ago

What is 2(-5 + 3) as an equivalent expression. What is the value of the expression?

Mathematics

1 answer:

Orlov [11]2 years ago

8 0

Answer: 2(-5+3) is the equivalent of -10+6. the value is -4

Step-by-step explanation:

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Please show work. thank you!

ioda

Answer:

$\large\boxed{h=\dfrac{\sqrt{703}}{2}ft\approx13.26ft}$

Step-by-step explanation:

Look at the picture.

Use the Pythagorean theorem:

$leg^2+leg^2=hypotenuse^2$

We have:

$leg=\dfrac{9}{2}ft\\\\hypotenuse=14ft\\\\leg=h$

Substitute:

$\left(\dfrac{9}{2}\right)^2+h^2=14^2$

$\dfrac{81}{4}+h^2=196$ multiply both sides by 4

$81+4h^2=784$ subtract 81 from both sides

$4h^2=703$ divide both sides by 4

$h^2=\dfrac{703}{4}\to h=\sqrt{\dfrac{703}{4}}\\\\h=\dfrac{\sqrt{703}}{\sqrt4}\\\\h=\dfrac{\sqrt{703}}{2}\\\\h\approx13.26$

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4 years ago

Compute the standard deviation for the set of data 2, 5, 6, 8, 14

Lesechka [4]

Answer:

4.4721

Step-by-step explanation:

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3 years ago

A construction crew has just finished building a road. The road is 8 2/5 kilometers long. If the crew worked for 6 days, how man

Misha Larkins [42]

Answer: 1.4 or 1 2/5

Reason: if you were to do 8.4÷6 you would get 1.4 and to check your work you can do 1.4×6 which is 8.4 or 8 2/5

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3 years ago

Combine the complex numbers

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Where is the insert image?

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4 years ago

What is the sum of (2x - 4y) and (9x + 2y)? Please explain

navik [9.2K]

Answer:

11x-2y

Step-by-step explanation:

Combine like terms so 2x+9x=11x AND -4y+2y=-2y so answer follows as 11x-2y

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4 years ago