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Ronch [10]
3 years ago
9

Expand then sliplify : 3z (2z +4) + 6z (2z - 5)

Mathematics
1 answer:
klio [65]3 years ago
4 0
Let's expand first:
6z^2+12z+12z^2-30z

Simplify (combine like terms):
18z^2-18z
18z(z-1)

So, your most simplified answer is 18z(z-1) or 18z²-18z.
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A snack food is made by mixing 3 lb of popcorn that costs $0.80 per pound with caramel that costs $2.20 per pound. How much cara
DochEvi [55]
Assuming you retain the same number of pounds of popcorn (3)

find cost now
3*0.80=2.40
2.20 per pound
(2.4+2.2x)/(3+x)=1.6
times 3x both sides
2.4+2.2x=4.8+1.6x
minus 1.6x from both sides
2.4+0.6x=4.8
minus 2.4 both sides
0.6x=2.4
divide both sides by 0.6
x=4

4 pounds of caramel are needed
8 0
3 years ago
Can someone plz help me find the answer to 2x=4 y-16. and 2x-y=-7
telo118 [61]

Answer:

So, y = 2x + 7;

Then, 2x = 4( 2x + 7 ) - 16;

2x = 8x + 28 - 16;

2x = 8x + 12;

- 6x = 12;

x = - 2;

Then, y = 2· (-2) + 7;

y = - 4 + 7;

y = 3.

Step-by-step explanation:


8 0
4 years ago
Enter an equation in point-slope form
Burka [1]

Answer:

y = 2/5x + 39/5

Step-by-step explanation:

point slope form is y = mx + b

so far we have y = 2/5x + b

m is slope which is given. We need to find b which is y-intercept.

They give us the point (-2,7). We can plug this into the equation to find b.

7 = 2/5(-2) + b

7 = -4/5 + b

b = 39/5

The equation now looks like y = 2/5x + 39/5

8 0
3 years ago
Find the least common multiple (LCM) of 6 and 10,<br> O A. 60<br> O B. 20<br> O C. 40<br> O D. 30
kolezko [41]
The answer is 30 I’m sure of it
4 0
3 years ago
Please help!! i don’t understand.
Ganezh [65]
64 degrees because it’s not the 101 and it’s too short to be the 51 so it Hass to be the 64° one
6 0
3 years ago
Read 2 more answers
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