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noname [10]
3 years ago
7

If f(x) = -x2 + 6x, what is f(-3)?

Mathematics
1 answer:
Sever21 [200]3 years ago
8 0

Answer:

-12

Step-by-step explanation:

f(-3)= -(-3)2 + 6(-3)

= -(-6) -18

= 6 - 18

= - 12

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A rectangular field has an area of 162 m² the width of this field is 9m what is the perimeter of this field
Andru [333]

Answer:

54 m

Step-by-step explanation:

Alrighty, what have we here: an area of 162 m² and a width of 9m.

So: A=162m², W=9m, let's draw this: (see the screenshot attached)

Using the formula for area (Area = width x length) we see that:

162m^{2} =9m*L

Thus: (equating to L by dividing both sides by 9m)

⇒ \frac{162m^{2} }{9m}=18m=L

Now we have all of our dimensions, we can use the formula for the perimeter to calculate it:

perimeter=2W+2L=2*9m+2*18m=18m+36m=54m

And there we have our answer.

3 0
2 years ago
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irina [24]
Can you make this more clear?? not really sure what I'm supposed to be doing here

8 0
3 years ago
Tino and Kate are Taylor's so wing buttons on shirts each shirt need eight buttons together at the Taylor's attached 80 buttons
Paraphin [41]
Tina would have completed 5 shirts as 80÷8 is 10 and if you split ten shirts between the 2 of them, they each complete 5 shirts
4 0
3 years ago
Find the values of x and y.
ValentinkaMS [17]

Answer:

x=110° y=140°

Step-by-step explanation:

x=180°-70°

x=110°

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y=110°+30°

y=140°

3 0
3 years ago
Margo’s dog, named Todd, weighed 120 pounds last year. She now weighs 180 pounds. What is the percent of change
diamong [38]

Answer:

150%

Step-by-step explanation:

3 0
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