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Oliga [24]
3 years ago
6

How to find the mean of percentages

Mathematics
1 answer:
MissTica3 years ago
3 0
You add the two numbers and divide them by two
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If a line with a slope of -2 crosses the y-axis at (0,3) what is the equation of the line
Ghella [55]
Hello!

The equation can be written as seen below. You only need a y-intercept and slope to write the equation.

y=-2x+3                             (it intercepts at a y-value of 3).

I hope this helps!
5 0
3 years ago
Find the equation of the line that is perpendicular to the line 4x+2y=1 and passes through the point (-4,3)
serious [3.7K]

First find the slope of the given line:

4x +2y = 1

Subtract 4x from each side:

2y = -4x + 1

Divide both sides by 2:

y = -2x +1/2

The slope is -2.

Now use the slope to find the y-intercept. Because  the line is perpendicular, you need to use the negative inverse of the slope.

The negative inverse of -2 is 1/2

Now using the point-slope form y - y1 = m(x-x1)

Use the inverse slope for m, and the given point(-4,3) to get:

y - 3 = 1/2(x+4)

Simplify:

y - 3 = x/2 +2

Add 3 to each side:

y = x/2 + 5

Reorder the terms to get y = 1/2x +5

The answer is D.

5 0
3 years ago
a plane left chicago at 8 AM. at 1 PM the plane landed in Los Angles, which is 1500 miles away. what was the average speed of th
zlopas [31]

Answer:300 miles gor every 1 hour

Step-by-step explanation:

Okay so first ot gives you 3 numbers see how many hours is from 8am to 1pm then once you get that number divided it by your miles you will get how many miles will you go per 1 hour

6 0
2 years ago
What x 9 = 3? <br> 3 Divided by 9 = what
Elanso [62]

Answer:

1/3

Step-by-step explanation:

9 divided by 3 = like .333333333 so yea

6 0
2 years ago
Read 2 more answers
Write the equation for a parabola with a focus at (-2,5) and a directrix at y=3.
Fofino [41]

Answer:

(x+2)²=4(y-4)

or y=1/4 (x+2)²+4

Step-by-step explanation:

directrix y=3 and focus (-2,5) to find te equation of parabola we use the equation :

(x-h)²=4p(y-k)

vertex(h,k) : the vertex is half way between the focus and the directrix

y(vertex)=y(focus)+directrix/2

y=5+3/2 ⇒8/2=4

x is the same as the c of the focus =-2

vertex (-2,4)

to find the distance (p) which is the distance between the vertex and focus

p=5-4=1

substitute h=(-2), k=(4) and p=(1) in the equation : (x-h)²=4p(y-k)

(x-(-2)²=4(1)(y-4)

(x+2)²=4(y-4)

5 0
3 years ago
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