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Verizon [17]
2 years ago
6

A car travels at 45 miles per hour how long did it travel in 4 hours?

Mathematics
1 answer:
wolverine [178]2 years ago
7 0

Answer:

180 miles

Step-by-step explanation:

just multiple 45X4

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a quadratic equation has a discriminant of 12. which could be the equation? a.0 = –x2 8x 2 b.0 = 2x2 6x 3 c.0 = –x2 4x 1 d.0 = 4
Norma-Jean [14]

Answer:

Option b which is 2x^2+6x+3=0

Step-by-step explanation:

We have been given the discriminant 12

We have to choose the equation which will satisfy the given discriminant.

We will consider all the given equation one by one

First we will take option a which is -x^2+8x+2=0

Discriminant from the equation we will find by the formula

D=b^2-4ac

Here, a=-1,b=8 and c=2 on substituting the values we will get

D=8^2-4(-1)(2)=72

Hence, option a is incorrect.

Now, we will consider option b which is 2x^2+6x+3=0

Here, a=2,b=6 and c=3 on substituting the values we get

D=(6)^2-4(2)(3)=12

Hence, option b is correct

Therefore, option b is the required answer.

8 0
3 years ago
Read 2 more answers
5,3,-7,-8,-2 order from greatest to least
Burka [1]

Answer

-8, -7, -2, 3, 5

Explanation

Positive numbers go up as they increase.

Negative numbers go up as they decrease.

3 0
3 years ago
Multiple choice please answer please
eduard

Answer: 33.85 mm

Step-by-step explanation:

Use trigonometry, tan equation

You are give the tan angle and adjacent side, you need to find the opposite side so

O

T A

Tan(72)= x/11

x= tan(72) x 11

x= 33.85

8 0
4 years ago
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Help please <br> I took pictures in stead
inn [45]

Answer:

I don't know sorry for no answer

8 0
3 years ago
What is the approximate circumference of the circle shown below?​
aniked [119]

Answer:

D: 109 cm

Step-by-step explanation:

The formula of circumference is

\pi d

Diameter =

17.4 \times 2 = 34.8

Hence, circumference =

34.8 \times \pi = 109.32742...

rounded of to 109.

8 0
3 years ago
Read 2 more answers
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