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sesenic [268]
2 years ago
14

F(x) = –2² – 9x Find f(-2)

Mathematics
1 answer:
Sav [38]2 years ago
3 0

Answer:

22

Step-by-step explanation:

1.) -2²-9(-2)

2.) -2(-2)+18

3.) 4+18

4.) 22

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Vanessa draws one side of equilateral ΔABC on the coordinate plane at points A(–2, 1) and B(4,1). What are the possible coordina
sukhopar [10]

Answer:

Possible C:

(1 , 1 + 3sqrt(3))

(1 , 1 - 3sqrt(3))

Step-by-step explanation:

AB = 6 units

Midpoint of AB is (1,1)

C would be at x = 1

So, (1,y)

(y-1)² + (1+2)² = 6²

(y-1)² = 36 - 9

(y-1)² = 27

y - 1 = 3sqrt(3)

y - 1 = -3sqrt(3)

y = 1 + 3sqrt(3)

y = 1 - 3sqrt(3)

7 0
3 years ago
Help Me Please (30 Points) + Brainliset Answer
Pani-rosa [81]
Each of 4 friends has 2 balloons
4 x 2 = 8

herself has one

so 8 + 1 = 9

answer: Total 9  balloons
8 0
3 years ago
Read 2 more answers
An electrician paid $398.40 total for 1,000 feet of wire.How much does he have to pay per foot a wire?
alexdok [17]

Divide the total spent by the total feet:

$398.40 / 1000 = 0.3984 per foot.

Round the answer as needed.

8 0
2 years ago
the surface area of earth is about 196.9 million square miles. The land area is about 57.5 million square miles, and the rest is
kow [346]

Answer: 29.2%

Step-by-step explanation:

The total surface area is 196.9 million square miles and out of this, land occupies 57.5 million square miles.

The probability that a meteorite would hit land is the percentage of and out of the entire planet area:

= Land area/ Total earth surface area

= 57.5/ 196.9

= 29.2%

8 0
2 years ago
Calculate the average speed (tin km/hr) of charlie who run to the store 4 km away in 30 minutes
Galina-37 [17]

ANSWER

8km/hr

EXPLANATION

The average speed

=  \frac{distance}{time}

Distance=4km

Time=30mins

Convert time to hours.

Time =0.5hrs

The average speed

=  \frac{4}{0.5}

= 8km/hr

8 0
3 years ago
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