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IrinaK [193]
3 years ago
8

What is the value of f(x) = –x2 – 2 when x = –1?

Mathematics
1 answer:
djyliett [7]3 years ago
8 0
0 because the -x cancels out the ones negative and 1 x 2 is 2. And 2-2 is 0
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What is 42 as a fraction in simplest form?
mafiozo [28]
42/1 because it's a whole number so the denominator is a 1
5 0
3 years ago
wanda works as an electrician with the current electric company. she earns $17.25 per hour with time and a half after 40 hours.
OLEGan [10]
1.5(17.25) = 25.88 --- this is ur overtime pay per hr

17.25(40) + 25.88(4) = 690 + 103.52 = 793.52...nice weekly pay :)
8 0
4 years ago
Find the volume of each sphere. Round to the nearest tenth.. volume V=4/3
FrozenT [24]
The complete question is
Find the volume of each sphere for the given radius. <span>Round to the nearest tenth

we know that
[volume of a sphere]=(4/3)*pi*r</span>³

case 1) r=40 mm
[volume of a sphere]=(4/3)*pi*40³------> 267946.66 mm³-----> 267946.7 mm³

case 2) r=22 in
[volume of a sphere]=(4/3)*pi*22³------> 44579.63 in³---->  44579.6 in³

case 3) r=7 cm
[volume of a sphere]=(4/3)*pi*7³------> 1436.03 cm³---->  1436 cm³

case 4) r=34 mm
[volume of a sphere]=(4/3)*pi*34³------> 164552.74 mm³----> 164552.7 mm³

case 5) r=48 mm
[volume of a sphere]=(4/3)*pi*48³------> 463011.83 mm³----> 463011.8 mm³

case 6) r=9 in
[volume of a sphere]=(4/3)*pi*9³------> 3052.08 in³----> 3052 in³

case 7) r=6.7 ft
[volume of a sphere]=(4/3)*pi*6.7³------> 1259.19 ft³-----> 1259.2 ft³

case 8) r=12 mm
[volume of a sphere]=(4/3)*pi*12³------>7234.56 mm³-----> 7234.6 mm³
3 0
3 years ago
I can’t figure out what the half circle means the answer options are 163,129,149 and 186
vodka [1.7K]

Answer: 129

Step-by-step explanation: First find the area of the circle. Since we know the area of a circle is πr²  (pi multiplied by the radius squared) we can find the area of the half circle. The radius is 5 (because radius is half of the diameter)

Area=3.14(5)²

       =3.14(25)

       =78.5

But since this is just a half circle, divide this by 2

That will get 39.25

Then add this to the area of the rectangle (L*W) which is 90

That will get about 129

4 0
3 years ago
I need your help again guys!
solmaris [256]

ANSWER

x = 13

EXPLANATION

Use the Pythagoras Theorem to obtain,

{x}^{2}  =  {12}^{2}  +  {5}^{2}

This implies that,

{x}^{2}  = 144 + 25

{x}^{2}  = 169

Take the positive square root of both sides to get,

x =  \sqrt{169}

x = 13

8 0
4 years ago
Read 2 more answers
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