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ira [324]
3 years ago
15

If f(x) = x2 + 2x – 10, what is f(-2)?

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
4 0

Answer:

The answer is -18

Step-by-step explanation:

Actually if the x2 is supposed to be x^2 then it's -10

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(10 POINTS) answer ASAP if you can
erma4kov [3.2K]

Answer:

D

Step-by-step explanation:

Because it's 340 meters per second

5 0
3 years ago
Madison has set up a lemonade stand outside her house and sells small cups and large cups of lemonade. Each small cup holds 12 o
Troyanec [42]

Answer:

12x+22(y+10)=1240, y=x

small cups=30

large cups=40

Step-by-step explanation:

let x be the number of small cups and y the number of large cups.

-Given that 10 more cups than small cups of lemonade were sold:

12x+22(y+10)=1240

#Before the 10 more were sold, the number of x and y sold were equal>

x=y\\\\\therefore 12x+22(x+10)=1240\\\\12x+22x+220=1240\\\\34x=1240-220\\\\34x=1020\\\\x=30

The number of small cups sold was 30

#Since, the number of large cups was 10 more, y=x+10=30+10=40

7 0
3 years ago
Read 2 more answers
The formula K=C+273.15 converts temperatures from Celsius C to Kelvin K.
Vanyuwa [196]
A. C= K-273.15
b. 300= C+273.15
300-273.15= C
26.85=C
4 0
3 years ago
Determine the length of GH. Round to the nearest tenth.<br> 3.9 cm<br> G<br> 52<br> 642<br> H
sesenic [268]

Answer:

|GH| = 5,7 cm

Step-by-step explanation:

To know |GH|, you first need to find the length of |GD|.

We can calculate |GD| by;

cosG = |GC| / |GD|

<=> |GD| = |GC| / cosG

 => |GD| = 3,9 cm/ 0,62 = 6,33 cm

We now can easily calculate |GH| with the sinus of angle D;

sinD = |GH| / |GD|

<=> |GH| = sinD.|GD|

 => |GH| = 0,899.6,33 cm = 5,694 cm => 5,7 cm

I hope i did not make a mistake ...

5 0
3 years ago
Anybody help me please
GrogVix [38]

Answer:

Rotation 180° counterclockwise about the origin

7 0
2 years ago
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