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3 years ago

A set of numbers is shown:

1 answer:

Studentka2010 [4]3 years ago

6 0

3x + 3 > or equal to 21
3x > -3 +21
3x>18
x> 18/3
x> or equal to = 6
3(6) + 3 > 21
18 + 3 > 21
21> 21
So remember greater than or equal to

6 for x is equal to
12 for x is greater than
3(12)

18 for x is greater than 21. 3(18)

Answer is (6,12,18)

3(2.8) = 8.4 + 3 is only 11.4 < 21

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A rectangle whose perimeter is 110 feet. The length is 4 times as long as the width. Find the length and the width.

madreJ [45]

Set up a system of equations.
l=4w
2l+2w=110

Substitute l in to the second equation.
2(4w)+2w=110
8w+2w=110
10w=110
w=11

Substitute w back into the first equation.
l=4(11)=44

So, the length is 44 feet and the width is 11 feet.

Hope this helped!

8 0

3 years ago

Rational numbers that are not integers are?

Vladimir [108]

Any number that can be writen as a fraction example: 0.75, -15, 0, 9

6 0

3 years ago

Please help with this problem

GrogVix [38]

The correct answer is B. 8<=l<=10. You can find this because we know the length is 2 feel more than the width, so when the length is provided, we can find the area. 8*6 is 48, which is the minimum area, and 10*8 is 80, which is the maximum area allowed.

6 0

3 years ago

Evaluate the expression for a = 27, b = 26, c = 27, d = 23: a+b-c-d

artcher [175]

For this case we have the following expression:

$a + b-c-d$

We must evaluate the expression when:

$a = 27\\b = 26\\c = 27\\d = 23$

Substituting the values we have:

$a + b-c-d = 27 + 26-27-23$

Equal signs are added and the same signs are placed.

$a + b-c-d = + 53-50$

Different signs are subtracted and the sign of the major is placed:

$a + b-c-d = 53$

Finally we have to:

$a + b-c-d = 53$

Answer: $a + b-c-d = 53$

5 0

3 years ago

Help me plz

irakobra [83]

Answer:

I could do 1 and 3

1) 2x-3y=-2 ....1

2x+y=14......2

=-4y=-16

y=4

Substitute (y=4) into equation 1

2x-3 (4)=-2

2x-12=-2

2x=-2+12

2x=10

×=5

3) 5x+5y=20....1

-3x+5y=4......2

=8x=16

x=2

Substitute (x=2) into equation 1

5 (2)+5y=20

10+5y=20

5y=20-10

5y=10

y=2

5 0

3 years ago

Read 2 more answers