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3 years ago

Please I need help!!!!!!

Mathematics

1 answer:

bija089 [108]3 years ago

4 0

Answer:

$133

Step-by-step explanation:

$135-$12=

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Solve for y. 13 = 6 + y

kvv77 [185]

The answer is 7
13-6 is 7

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3 years ago

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What is the equation of a parabola with (-1,-3) as its focus and y=1 as its directrix?

Olegator [25]

Hmm, y=1 is directix
means it opens up or down
we will be using
(x-h)²=4p(y-k) where (h,k) is vertex and p is the distnace from focus to vertex and from vertex to direcitx
focus is (-1,-3)
find distance between y values because directix is a y value
midpoint is the vertex
from -3 to 1 is 2 units
since focus is below directix, it opens down, and p is negative
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so at (-1,-1)
and p=-2

(x-(-1))²=4(-2)(y-(-1))
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3 years ago

Sheryl has 13 ⅙meters of fencing after placing some around her garden. The garden she fenced has two sides that are 16 ¾meters l

Degger [83]

Answer:

$71 \times \frac{4}{6}$ meters

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4 years ago

8.25% convert to a decimal then round to fourth decimal Place I

Amiraneli [1.4K]

As 100%=1.0

8%=0.08

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3 years ago

A train left for London, and after 9 hours later, a car traveling 80 miles per hour tried catching up to the train. After 3 hour

morpeh [17]

Answer:

20 miles per hour

Step-by-step explanation:

Given that the train left for London, and after 9 hours later, a car traveling 80 miles per hour tried catching up to the train. After 3 hours, the car caught up

Which means that the car travelled the same distance in 3 hours as the train travelled in 9 + 3 = 12 hours

Let the distance be d

Given the speed of car is 80 miles per hour

We know that $speed=\frac{distance }{time}$

$80=\frac{d}{3}$

d = 240 miles

Now for the train Average speed = total distance / total time taken

Average speed of the train = $\frac{240}{12}$ = 20 miles per hour

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3 years ago