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kramer
3 years ago
15

Can u help me show my work and answer the question

Mathematics
1 answer:
lana [24]3 years ago
4 0

The total duration of the trip is 5 3/4 hours. Thus, you just need to calculate each segment separately.

Since you know he drove 168 miles in 3 1/2 hours, you only need to calculate how far he travelled for 2 1/4 hours.

Speed is distance per unit time.

Calculate 168 / 3.5h which will give you 48 miles per hour. That is the speed at first.

After that, the speed increases by 5miles per hour so it becomes 53 miles per hour.

calculate the distance (s × t) = 53 × 2 1/4

Add the two distances together which gives you 168 + (53 × 2 1/4) = 287.25 miles.

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Whoops i forgot to read the lesson :P 30 points
andriy [413]

Step-by-step explanation:

I'll do 2.

Alright,Alex let say we have factored a quadratic into two binomial, for example

(5x + 3)(6x - 4)

If we set both of those equal to zero

(5x + 3)(6x + 4) = 0

We can used the zero product property in this case to find the roots of the quadratic equation.

This means that

if  \: ab = 0 \: then \: a = 0 \: and \: b = 0

This means we set each binomal equal to zero to find it root.

5x + 3 = 0

5x =  - 3

x =  -  \frac{3}{5}

6x + 4 = 0

6x =  - 4

x =  -  \frac{2}{3}

So our roots are negative 3/5 and negative 2/3 using zero product property

6 0
3 years ago
Which graph or equation represents a Nonpoportional relationship A B C or D
VARVARA [1.3K]

Answer:

A

Step-by-step explanation:

A graph that represents a proportional relationship usually has the line cutting through the line of origin (0, 0).

The graph in option A does not have the line passing through the point of origin (0, 0), therefore, it does not represent a proportional relationship.

For an equation that represents a proportional relationship, it is written in the form of y = kx

Where, k is the constant of proportionality.

Therefore, the two equations given represents a proportional relationship.

7 0
3 years ago
What number do you add to 17 to get 51
Basile [38]

Answer:

Go back to first grade

8 0
3 years ago
Read 2 more answers
Amy’s cake shop is building a three tier circular wedding cake. The top layer has a radius measuring 2.5 inches. The next layer
Gemiola [76]
It would be 8.5 because all you have to do is add 3 to 2.5 then you’ll get 5.5 then do that one more time.
7 0
3 years ago
Me and my friend were checking answers, but then our answers differed on one question by one digit. The question is: [(21-13)+(3
Sunny_sXe [5.5K]

[(21-13)+(32-24)] x 4

[(8)+(8)] x 4

16 x 4

= 64

If this helped you, please list me as brainliest!

5 0
4 years ago
Read 2 more answers
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