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stiks02 [169]
3 years ago
7

You 495 miles from home and you are driving toward home at an average of 45mph. How long will it take to drive home if you maint

ain the same speed? (Hint: When you reach home, the x-value is zero.)
Mathematics
1 answer:
Kay [80]3 years ago
6 0
It will take you 11 hours to reach home
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Y = −1 / 4 (x + 4) 2 −1 on a coordinate plane using its vertex, focus, and directrix.
trasher [3.6K]

Answer:

Hello,

Step-by-step explanation:

do I remind you of the formula :

where (a,b) is the vertex and y=k the directrix

y=\dfrac{(x-a)^2}{2(b-k)} +\dfrac{b+k}{2} \\\\\\y=-\dfrac{(x+4)^2}{4} -1 \\\\Using\ identification:\\a=-4\\2(b-k)=-4\\b+k=-2\\\\\left\{\begin{array}{ccc}b-k&=&-2\\b+k&=&-2\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}2b&=&-4\\2k&=&0\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}b&=&-2\\k&=&0\\\end{array}\right.\\

Focus=(-4,-2)

Directrix: y=0

Vertex=(-4,-1)

6 0
3 years ago
A circular fence is being placed around a tree. The diameter of the fence is 4 feet. How much fence is used around the tree? Lea
Step2247 [10]

Answer:

8π

Step-by-step explanation:

If we are given the diameter of this circular fence, then we can solve for the radius. Just take the diameter of 4 and divide by 2 which is 2.

The circumference of a circle is 2πr²

Just plug in the variables and you get 2π(2)² which is 8π

Hope this helps! :)

5 0
3 years ago
The table shows the relationship between Megan's earnings and the hours that she worked.
zavuch27 [327]
I got 76 for the missing value
8 0
3 years ago
MATH SMARTIES I WILL GIVE BRAINLIEST AND CAN YOU EXPLAINE WHY YOU THINK ITS THAT ANSWER (SHOW WORK) SO I CAN UNDERSTAND THANK YO
Katen [24]

Answer:

gasoline

Step-by-step explanation:

7 percent of 2500 is 175

7 0
3 years ago
Read 2 more answers
3x-2y=-5 and 4x+2y=-16​
podryga [215]

Answer:

x=-22/4

y=-3

Step-by-step explanation:

3x-2y=-5

4x+2y=-16

we <u>add</u> the equation

7y=-21

y=-3

then we find the x by taking a random equation

I take 4x+2y=-16

4x+2(-3)=-16

4x-6=-16

4x=-22

x=-22/4

7 0
3 years ago
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