2 years ago

How do I solve this inequality?

Mathematics

1 answer:

stiv31 [10]2 years ago

4 0

you work out the equation from 5 to 3 then compare it to 9

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Which of the following is not a way to represent the solution of the inequality 2(x + 1) greater than or equal to 20?

Goshia [24]

Answer:

option C

A number line with a closed circle on $9$ and shading to the left

Step-by-step explanation:

we have

$2(x+1)\geq 20$

solve for x

$2x+2\geq 20$

Subtract $2$ both sides

$2x+2-2\geq 20-2$

$2x\geq 18$

Divide by $2$ both sides

$x\geq 9$ --------> is equivalent to $9 \leq x$

The solution is the interval--------> [9,∞)

All real numbers greater than or equal to $9$

A number line with a closed circle on $9$ and shading to the right

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2 years ago

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What is the slope of (15,9), (-14,-9)

Lady bird [3.3K]

The formula for slope:

m = $\frac{y_{2} - y_1 }{x_2-x_1}$

$\frac{-9-9}{-14-15}$

-9-9 = -18
-14-15 = -29

$\frac{-18}{-29}$

8 0

2 years ago

Matthew manages the packaging department of his company. Yesterday, the department operated for only 4 hours due to a company pi

11111nata11111 [884]

Answer:

add them all otherwise I don't know im on that question sorry

Step-by-step explanation:

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Mary is 21 years old. Her age is 9 years more than 3 times Henry’s age. Which equation can be used to determine x, Henry’s age i

nika2105 [10]

Answer:4

Step-by-step explanation:

21=3x+9

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3 years ago

Lee and Sheby race clockwise around a 400 meter oval

bija089 [108]

Answer:

6,000 meters

Step-by-step explanation:

Length of one lap d = 400 m

Lee's speed = u = 7.2 km/h. Shelby's speed v = 9 km/h

After time t, Shelby will run x meters to cover exactly 3 more laps than Lee.

So x = vt

and

x - 3d = ut

Note t = x/v, then

x - 3d = x*u/v

x (1 - u/v) = 3d

x = 3d/(1 - u/v) = 3*400/(1 - 7.2/9) = 6,000 meters

6 0

2 years ago