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3 years ago

Solve 5 - 2x < 7. A) x < -1 B) x > -1 C) x < -12 D) x > -12

Mathematics

1 answer:

Setler [38]3 years ago

5 0

Answer

Step-by-step explanation:

5-2x<7

subtract 5 on both sides

-2x<2

divide by -2

x>-1

so its B

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A rectangular field has an area of 162 m² the width of this field is 9m what is the perimeter of this field

Andru [333]

Answer:

54 m

Step-by-step explanation:

Alrighty, what have we here: an area of 162 m² and a width of 9m.

So: A=162m², W=9m, let's draw this: (see the screenshot attached)

Using the formula for area (Area = width x length) we see that:

$162m^{2} =9m*L$

Thus: (equating to L by dividing both sides by 9m)

⇒ $\frac{162m^{2} }{9m}=18m=L$

Now we have all of our dimensions, we can use the formula for the perimeter to calculate it:

$perimeter=2W+2L=2*9m+2*18m=18m+36m=54m$

And there we have our answer.

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2 years ago

Which number is a prime number? 63 65 67 69

Romashka-Z-Leto [24]

67 is a prime number

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2 years ago

Calculate the Average of...

lesantik [10]

You add them and then divide by how many numbers there are.

a. (3+43)/2 = 23
b. 0
c. -1

3 0

3 years ago

Read 2 more answers

Hep asappppppppppppp

schepotkina [342]

Answer:

(6 , -1)

Step-by-step explanation:

2x+ y = 11 ----------------(I)

y = 11 - 2x --------------------(II)

$\frac{1}{2}x - 5y = 8$

Multiply the whole equation by 2

$2*\frac{1}{2}x -2*5y = 2*8$

x - 10y = 16 --------------------(III)

Substitute y = 11- 2x in equation (III)

x - 10(11 - 2x) = 16

x - 110 + 20x = 16

21x - 110 = 16

21x = 16 +110

21x = 126

x = 126/21

x = 6

Plugin x = 6 in equation (II)

y = 11 - 2*6

y = 11 - 12

y = -1

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2 years ago

Find the LCM of 6 and 8. A) 12 B) 18 C) 24 D) 36

frez [133]

Answer:

The answer is C) 24

3 0

2 years ago