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Romashka [77]
3 years ago
6

Approximate the real zeros of f(x) = x2 + 3x + 1 to the nearest tenth

Mathematics
2 answers:
pshichka [43]3 years ago
5 0

Approximate the real zeros of f(x) = x2 + 3x + 1 to the nearest tenth

<u>C. 2.6,-0.4</u>

<u />

Marta_Voda [28]3 years ago
3 0

Answer:The answer is A. (-2.6,-0.4)

Step-by-step explanation:

I used a zeroes calculator and this was the answer

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Mary's car can go 24 miles on one gallon of gasoline. However , her gas mileage can vary by 2 miles per gallon depending on wher
lakkis [162]

Answer: | x -24 |=2

Step-by-step explanation:

Given: Mary's car can go 24 miles on one gallon of gasoline.

her gas mileage can vary by 2 miles per gallon depending on where she drives .

i.e. either 2 miles added or subtracted in the  gas mileage.

i.e. -2< Gas milegae -24 <2

⇒  | Gas milegae -24 |=2

Let x represents the gas mileage.

Then,  | x -24 |=2 is the required absolute value equation that you can use to find the minimum and maximum gas mileage.

4 0
3 years ago
Let hh be the set of all points in the second quadrant in the plane v=ℝ2v=r2. that is, h={(x,y)∣x≤0,y≥0}h={(x,y)∣x≤0,y≥0}. is hh
BaLLatris [955]
No, H is not a subspace of V. A simple counter-example to the contrary: let h\in H with h=(-1,0). However, scaling by -1 gives the vector -h=(1,0) and -h\not\in H.
7 0
3 years ago
A train leaves at 1314 and arrives at 1508. It travelled at an average speed of 105 km/h.
Paraphin [41]

Answer: The train traveled 199.5 km

Step-by-step explanation:

We know the relationship:

Distance = Time*Speed

We know that the speed of the train was 105km/h

And we know that it leaves at 13:14, and arrives at 15:08.

Then the total amount of time that the train was traveling is:

T = (15 hours and 8 mins) - (13 hours and 14 mins)

= (15 - 13) hours and (8 - 14) mins

=  2 hours and (-6) mins.

We know that one hour has 60 minutes, then this is equal to:

T = 1 hour and 54 minutes.

But because the speed is kilometers per hour, we need to rewrite the 54 minutes in hours.

This can be done as follows:

1 hour = 60 minutes.

Then: 54 minutes = (54/60) hours = 0.9 hours.

Then:

1 hour and 54 minutes = 1.9 hours.

Now we know the speed and the time, then the distance can be calculated as:

Distance = speed*time = 105km/h*(1.9 h) = 199.5 km

The train traveled 199.5 km

3 0
3 years ago
Read 2 more answers
If the small inner window has a glass area of 153.94 in^2, what is its diameter, in inches?
Wittaler [7]

Answer:

14

Step-by-step explanation:

1) 153.94 divided by π

2) Simplify 49.00062388 to 49

3) 2√49

4 0
2 years ago
The sample mean is a statistic. True or false​
ruslelena [56]

Answer:

true

Step-by-step explanation:

6 0
2 years ago
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