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3 years ago

Is (-5)+12 equal to 7 or is (-5)+(-12) equal to 7?

Mathematics

1 answer:

dezoksy [38]3 years ago

8 0

Answer:

-5+12=7

Step-by-step explanation:

the second option is adding two negatives, which sums up to -17 rather than -7

<h2><em><u>xoxo,</u></em></h2><h2><em><u>your highness...</u></em></h2>

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A right rectangular prism has these dimensions:

ki77a [65]

Volume of rectangular prism = 1 1/3 x 5/6 x 2/3 = 4/3 x 5/6 x 2/3 = 20/27

Volume of cube = 1/6 x 1/6 x 1/6 = 1/216

Number of cubes that will pack the rectangular prism = 20/27 / 1/216 = 160

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3 years ago

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Solve the inequality below. Use the drop down menus' to describe the solution and its graph.

defon

Answer:

x>-4

Step-by-step explanation:

Easy, -7x + 13 > 41 from here you subtract 13 from each side giving you -7x >28 after this you divide by -7.

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2 years ago

Use the Distributive Property to write each expression as an equivalent expression. Then evaluate it.

Alla [95]

Distributive property means that you must multiply the number directly outside the parentheses to all the numbers inside the parentheses

Look at the image below for the work!

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3 years ago

How do you do 56 through 58? Thanks to anyone who awnsers!

astraxan [27]

Hello !

56)

$5 {x}^{2} + 8x = - 1 \\ 5 {x}^{2} + 8x + 1 = 0$

$\Delta = {b}^{2} - 4ac \\ = {8}^{2} - 4 \times 5 \times 1 \\ = 64 - 20 \\ = 44$

The value of the discriminant is 44.

57) ∆>0 : there are two solutions.

58)

$x_1 = \frac{ - b + \sqrt{\Delta} }{2a} \\ = \frac{ - 8 + \sqrt{44} }{2 \times 5} \\ = \frac{ \sqrt{11} - 4 }{5}$

$x_2 = \frac{ - b - \sqrt{\Delta} }{2a} \\ = \frac{ - 8 - \sqrt{44} }{2 \times 5} \\ = \frac{ - \sqrt{11} - 4 }{5}$

Have a nice day

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2 years ago

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Write the equation of the line perpendicular to y=1/2x+3 that contains (5,-4)

vladimir1956 [14]

Answer:

y = -2x + 6

Step-by-step explanation:

y = -2x + b

-4 = -2(5) + b

-4 = -10 + b

6 = b

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3 years ago