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Olenka [21]
2 years ago
15

X²+2x+ hacer la expresion un cuadrado perfecto

Mathematics
1 answer:
ch4aika [34]2 years ago
3 0
=xx(x+2) es mi respuesta
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How many ways can you make a dollar with 3 quarters 6 dimes and 8 nickels?​
melamori03 [73]

Answer:

3

Step-by-step explanation:

3 quarters + 2 dimes + 1 nickel = 1 dollar

6 dimes + 8 nickels = 1 dollar

7 nickels + 2 quarters + 1 dime = 1 dollar

I think that is all, I hope this helps!

8 0
2 years ago
Read 2 more answers
Eliminate the parameter,t, in the parametric equation, x=6cos t, and y =3 sin t
german
X = 6 cos(t) 
y = 3 sin(t)

we can rewrite these equations as:

\frac{x}{6}=cost(t) \\ \\ \frac{y}{3} =sin(t)

Taking squares of both equations we get:

( \frac{x}{6})^{2}=sin^{2} (t) \\  \\ 
( \frac{y}{3})^{2}=cos^{2}(t)

Adding both the equations, we get:

\frac{ x^{2} }{36}+ \frac{ x^{2} }{9}=sin^{2}(t)+cos^{2}(t)   \\  \\ 
 \frac{ x^{2} }{36}+ \frac{ x^{2} }{9}=1
6 0
2 years ago
Mary is twice as old as Helen’s age, If 8 is subtracted from Helen’s Age and 4 is added to Mary Age? Mary will be 4 times as old
erik [133]

Answer:

set mary is x years old, and helen is y years old.

first sentence:x=2y

second one:4(y-8)=x+4

bring x=2y in 4(y-8)=x+4

=>4y-32=2y+4

=>2y=36

=>y=18

=>x=36

mary:36

helen:18

3 0
2 years ago
Solve x2 - 8x - 9 = 0.<br><br> Rewrite the equation so that it is of the form <br> x2 + bx = c.
stira [4]
X^2 - 8x-9=0
D = b^2- 4*a*c = 64- 4* (-9) = 64+36=100 =10^2
X1 = (8-10)/2 = -1
X2= (8+10)/2= 9


7 0
3 years ago
Select the correct answer
Readme [11.4K]

Answer:

d

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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