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Vlada [557]
3 years ago
6

PLEASE PLEASE PLEASE HELPP!!??

Mathematics
2 answers:
Furkat [3]3 years ago
4 0
By the CORRESPONDING ANGLES POSTULATE:

if lines l and m are PARALLEL, then <1 ~= <5

converse:
if <1 ~= <5, then lines l and m are PARALLEL,

kolezko [41]3 years ago
3 0

Angle 1 equals angle 5. I think the theorem is Alternate interiors?

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Given: △EDN∼△LKI, DQ , KO are altitudes, DN=12, KI=4, DQ=KO+6. Find: QN and OI.
fgiga [73]

Answer:

  • QN = 3√7
  • OI = √7

Step-by-step explanation:

The ratio of corresponding sides DN and KI is 12 : 4 = 3 : 1. The same ratio applies to altitudes DQ and KO. Since the difference between these altitudes is 6 and the difference between their ratio units is 3-1 = 2, each ratio unit must stand for 6/2 = 3 units of linear measure. That is, ...

  DQ = (3 units)·3 = 9 units

  KO = (3 units)·1 = 3 units

Then the base lengths QN and OI can be found from the Pythagorean theorem:

  KI² = KO² +OI²

  4² = 3² +OI²

  OI = √(16 -9)

  OI = √7

  QN = 3·OI = 3√7

8 0
3 years ago
7m2 + 3m + 4m2<br> What is the answer to this
mylen [45]
I’m assuming the 2’s are supposed to be exponents so you’re gonna to combine 7m^2 and 4m^2 to get 11m^2 so you’re answer would be

11m2+3m

You dint know the value of M so you can’t solve it, especially because there’s no equal sign with a number or expression/equation after it.
8 0
2 years ago
The equation of a parabola is given.y=1/8x^2+4x+20 What are the coordinates of the focus of the parabola?
Lena [83]
He equation of a parabola is x = -4(y-1)^2. What is the equation of the directrix? 
<span>You may write the equation as </span>
<span>(y-1)^2 = (1) (x+4) </span>
<span>(y-k)^2 = 4p(x-h), where (h,k) is the vertex </span>
<span>4p=1 </span>
<span>p=1/4 </span>
<span>k=1 </span>
<span>h=-4 </span>

<span>The directrix is a vertical line x= h-p </span>
<span>x = -4-1/4 </span>
<span>x=-17/4 </span>

<span>------------------------------- </span>
<span>What is the focal length of the parabola with equation y - 4 = 1/8x^2 </span>
<span>(x-0)^2 = 8(y-4) </span>
<span>The vertex is (0,4) </span>
<span>4p=8 </span>
<span>p=2 (focal length) -- distance between vertex and the focus </span>
<span>------------------------------- </span>
<span>(y-0)^2 = (4/3) (x-7) </span>
<span>vertex = (7,0) </span>
<span>4p=4/3 </span>
<span>p=1/3 </span>
<span>focus : (h+p,k) </span>
<span>(7+1/3, 0)</span>
8 0
3 years ago
Read 2 more answers
Does anyone have know if there’s a answer key for this if not pls help.
KATRIN_1 [288]

Answer:

I'm not sure, but I could kinda help

Step-by-step explanation:

to find the slope using a graph, using the formula :

\frac{y2 - y1}{x2 - x1}

I hope this helps

5 0
2 years ago
A moving van travels 560 miles to reach a new house. The drivers stop to rest after traveling 75% of the total distance. How man
dexar [7]

Answer:

the driver stopped when they had traveled 420 miles

Step-by-step explanation:

hope this helps,

5 0
2 years ago
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