2 years ago

Given the expression 7p + 5q + 4p - 2q, what is the result of combining the like terms?

Mathematics

1 answer:

s2008m [1.1K]2 years ago

5 0

Answer:

11p+3q

Step-by-step explanation:

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Anyone know this ???

mr Goodwill [35]

Answer:

B and C

Step-by-step explanation:

The 2 smallest numbers have to add up to be bigger then the largest number in the set for it to be a triangle! I hope this helps!

7 0

2 years ago

Determine the general form of the equation for the circle (x – 1)2 + (y + 2)2 = 3.

12345 [234]

(x-1)(x-1) + (y+2)(y+2) = 3

x2 -1x -1x + 1 + y2 +2y +2y +4=3

x2 +y2 -2x +4y + 2=0

A is the answer

6 0

3 years ago

The half-life of lead is 22 years. How long will it take for a sample of this substance t decay to 80% of its original amount?

Svetlanka [38]

Answer: 7 years

Step-by-step explanation:

$t_{\frac{1}{2} }$ = In2 / ∧

since the half life is given , we have :

22 = In 2/ ∧

∧ = In2/22

∧ = 0.032

Recall the formula for half life:

$\frac{N(t)}{N(0)}$ = $e^{-∧t}$

Therefore:

0.80 = $e^{-0.032t}$

Take the In of both sides

In 0.80 = - 0.032t

t = In 0.80 / - 0.032

t = 7 years

4 0

3 years ago

Aline passes through the points (-1, 4) and (2,-2). What is the equation of this line?

irina1246 [14]

Answer:

y= -2x+2

Step-by-step explanation:

8 0

2 years ago

¿Cuál es la ecuación de la recta que pasa por el punto? (-1,-5) y tiene una<br> pendiente de - 1?

Zielflug [23.3K]

Answer:

y=-1x-6

Step-by-step explanation:

y-y1=m(x-x1)

y-(-5)=-1(x-(-1)

y+5=-1(x+1)

y+5=-1x-1

y=-1x-5-1

y=-1x-6

6 0

3 years ago