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svetoff [14.1K]

3 years ago

11

Rachel is driving from New York to Dayton Florida a distance of 1034 miles. How Much Time Is Saved By Doing The Trip At An Avera

ge Speed Of 60mph as compared with 55 mph? Round to the nearest half hour

1 answer:

balandron [24]3 years ago

4 0

Answer:

If she is driving 60 mph she will save 1 hour of her time rather then going 55 mph.

Step-by-step explanation:

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Solving the following system using the elimination method. 2x+y=-9<br> 2x-5y=-3

Stells [14]

Answer:

x = -57/14, y = -6/7

Step-by-step explanation:

2x + y = -9

-(2x - 5y = -3)

-------------------- (Add the two equations together)

7y = -6

y = -6/7

2x - 6/7 = -9

2x = -57/7

x = -57/14

7 0

3 years ago

Read 2 more answers

Sophie sprays 200 fluid ounces of water on the window plants in her house every day. How much water does she spray each day?

lutik1710 [3]

I think it is A not sure though

5 0

3 years ago

What is the value of -3 +4.5 - (-1.2)?

Mashutka [201]

I believe the answer is 2.7.

Hope the helps!!!

7 0

3 years ago

Derive the equation of the parabola with a focus at (_5, 5) and a directrix of y = -1.

mars1129 [50]

Answer: Option D is correct.

Step-by-step explanation:

Since we have given that

focus = (-5,5)

and a directrix y= -1

Since, equation of parabola in this case will be

$(x-h)^2=4.a(y-k)$

Now, here

$y=k-a=-1\\\\\text { focus =(h,k+a)}\\\\\text{So,} k+a=5\\\\\text{ by solving these two equation , we get }\\\\a=3\text{ and } k=2$

So equation will be

$(x+5)^2=4\times 3(y-2)\\\\(x+5)^2=12(y-3)\\\\y=\frac{1}{12}(x+5)^2+2$

So, option D is correct .

4 0

3 years ago

Read 2 more answers

How do I solve 3/10+2.125 <br> Converted into fractions

ahrayia [7]

Answer:

97/40

Step-by-step explanation:

so 2.125= 17/8

3/10+17/8 need to find common denominator so

times 8/8 to 3/10

times 10/10 to 17/8

24/80+170/80= 194/80 (common denominator so can add)

divide 194/80 because want reduce form

97/40 is the answer

(When i look at it now i can just time 4/4 and 5/5 but its ok this still gets the answer)

3 0

3 years ago