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3 years ago

Identify the expression that is not equal to the other three. Explain your reasoning

Mathematics

1 answer:

Nadusha1986 [10]3 years ago

3 0

Answer:

$-\left|7+3\right|$

Step-by-step explanation:

Solve each expression and then compare the results

case 1) we have

$15-\left|-5\right|\\ \\=15-(5)\\ \\=10$

case 2) we have

$\left|-4\right|+6\\ \\=(4)+6\\ \\=10$

case 3) we have

$-\left|7+3\right|\\ \\ =-(7+3)\\ \\=-10$

case 4) we have

$\left|-10\right|\\ \\ =-(10)\\ \\=10$

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What is the system of inequalities associated with the following graph?

slamgirl [31]

One line passes through the points (-2,3) and (0,-3) , it means the y intercept is b=-3

and slope m = $\frac{(-3-3)}{0-(-2)}$

$= \frac{-6}{2}= -3$

So the equation of line will be $y= -3x -3$

And the inequality should be $y\geq -3x-3$

Or $3x +y \geq -3$

And the other line passes through (-2,3) and (0,2)

So the y intercept is b=2

and the slope is $m= \frac{2-3}{0-(-2)} = \frac{-1}{2}$

So the equation of line will be $y= \frac{-1}{2} x +2\\and the inequality should be y \leq \frac{-1}{2} x+2$

$2y +x \leq 4$

So answer is $3x +y \geq -3, x+2y\leq 4$

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4 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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How do i find the square root of a number that is not a perfect square?

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3 years ago

PLEASE HELP ME WITH THIS THANKS

kotykmax [81]

Answer:

SA = 1244.64 square centimeters

Step-by-step explanation:

From the attached figure

The formula of the surface area of the prism is SA = 2B + PH, where

B is the area of its base
P is the perimeter of its base
H is the distance between its bases

The base of the prism is a regular hexagon with side 8 cm

If you join each vertex of the hexagon with its center you will form 6 congruent triangles with base 8 cm and height 6.93 cm

The area of the hexagon = 6 × area of a triangle

∵ The base of the triangle = 8 cm

∵ Its height = 6.93 cm

- The formula of the area of a triangle is A = $\frac{1}{2}$ × base × height

∴ Area of the triangle = $\frac{1}{2}$ × 8 × 6.93 = 27.72 cm²

- Lets find the area of the hexagon

∴ The area of the hexagon = 6 × 27 .72 = 166.32 cm²

∴ B = 166.32 cm²

The formula of the perimeter of the regular hexagon is P = 6 × s, where s is the length of its side

∵ The side of the hexagon is 8 cm

∴ P = 6 × 8

∴ P = 48 cm

∵ The distance between the two bases is 19 cm

∴ H = 19 cm

Substitute the values of B, P and H in the formula of the surface area above

∵ SA = 2(166.32) + (48)(19)

∴ SA = 332.64 + 912

∴ SA = 1244.64 square centimeters

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3 years ago

Help plz i will give brainliest

jasenka [17]

Answer:

(If needed explanation ask in the comments! ty)

Hope This Helps! •v•

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2 years ago