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3 years ago

Half a number is at least 2 units from 20. Please need help!!!

Mathematics

2 answers:

Anestetic [448]3 years ago

7 0

Wait so 20/2? -2?? Sorry i’m not sure!

Alik [6]3 years ago

7 0

Answer:

36 I think

Step-by-step explanation:

you would do .5x=20-2

this would simplify to .5x=18

you then divide 18 by .5 and you would get 36

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which of the following regular polygons can make a tessellation: a)septagon b)octagon c)square d)hexagon

adell [148]

Answer:

septagon

Step-by-step explanation:

septagon is the only regular polygon that can make a tessellation

hope it helps .

3 0

2 years ago

-3(4x-8.2)< -11.98x + 14 3 /4

Leona [35]

The answer would be C

6 0

3 years ago

Is 1/2*4/5 less than 4/5

kati45 [8]

No hope this helps bc it’s being multiplied and even then u simplify

4 0

2 years ago

Solve the equation by using quadratic formula . Show your work! Answer maybe in radical or decimal form .

Lorico [155]

Answer:

$x_1=\frac{-2+\sqrt{14}}{2}\approx 0.871,x_2=\frac{-2-\sqrt{14}}{2}\approx-2.871$

Step-by-step explanation:

$2x^2+4x-5=0$

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$x=\frac{-4\pm\sqrt{4^2-4(2)(-5)}}{2(2)}$

$x=\frac{-4\pm\sqrt{16+40}}{4}$

$x=\frac{-4\pm\sqrt{56}}{4}$

$x=\frac{-4\pm2\sqrt{14}}{4}$

$x=\frac{-2\pm\sqrt{14}}{2}$

$x_1=\frac{-2+\sqrt{14}}{2}\approx 0.871,x_2=\frac{-2-\sqrt{14}}{2}\approx-2.871$

5 0

2 years ago

Three pounds of lawn seed covers 1800 square feet. How many 4 pound bags are needed to cover 8400 square feet?

g100num [7]

1800 ft² = 3 pounds

[divide by 3 through]
1800 ÷ 3 = 3 ÷ 3
600ft² = 1 pound

[8400 ÷ 600 = 14; so multiply by 14 through]
600 x 14 = 1 x 14
8400ft² = 14 pounds

we need 14 pounds to cover 8400 square feet.

[Find number of 4 pounds bags needed]
14 ÷ 4 = 3.5
So we need to use 4 bags of 14 pounds of lawn seeds.

7 0

3 years ago