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blsea [12.9K]
3 years ago
6

PLZ HELP!!!!!!! will mark brainliest!!!!

Mathematics
1 answer:
alexgriva [62]3 years ago
6 0

Answer:

it is many triangles

Step-by-step explanation:

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Quadratic Equation Word Problem
Crazy boy [7]
------------------------------------------------------
Define x :
------------------------------------------------------
Let the width be x.

------------------------------------------------------
Find Area of the walkway :
------------------------------------------------------
Area = 30x + 30x + 20x + 20x + 4x²       
Area = 100x + 4x²

------------------------------------------------------
Find cost of the walkway in term of x:
------------------------------------------------------
1m² = $10
100x + 4x² = 10(4x² + 100x)
(100x + 4x²)m = $(40x² + 1000x)

------------------------------------------------------
Find Width of the walkway :
------------------------------------------------------
The budget is $6000

40x² + 1000x = 6000
40x² + 1000x - 6000 = 0
x² + 25x -150 = 0              //Divide by 40 through
(x - 5)(x + 30) = 0             //Factorise
x = 5 or x = -30 (Rejected, width cannot be negative)

------------------------------------------------------
Answer: The width can be 5m wide.
------------------------------------------------------

5 0
3 years ago
Help Math All the Points i have
d1i1m1o1n [39]
Hey there!
We'll be writing them in slope-intercept form. Slope intercept form is defined as:
y = mx + b
With m being the slope and b as the y-intercept. Now, we can just plug them in.

1)
y = -3x - 2
Slope = -3
Y intercept = -2

2) y = 5x + 7
Slope = 5
Y intercept = 7

3) y = -3/4x + 3
Slope = -3/4
Y intercept = 3

4) y = 5/2x - 6
Intercept = -6 
Slope = -5/2

Hope this helps!
5 0
3 years ago
A.5/4<br> B.2/1<br> C.5/2<br> D.5/1
Nina [5.8K]
C. 5/2.

You can get the scale factor by putting the measurements of similar sides on a fraction,

In this case 20/8 =5/2, 10/4 = 5/2
6 0
3 years ago
-17 = x/-3 for x. thanks for helping
vekshin1

Answer:

-17 = x/-3 for x.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
IF NR = 8 ft, what is the length of arc NMP. Round to the nearest tenth.
Pavlova-9 [17]

Check the picture below.

since chords NQ and MP cross the center of the circle at R, that means that those two chords are diametrical chords and the angles made by both are vertical angles and thus twin angles, namely both are 18° as you see in the picture, so the angle NMP in magenta is really 162° + 18° + 18° = 198°, and we know the radius NR is 8.

\textit{arc's length}\\\\ s=\cfrac{r\pi \theta }{180}~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=8\\ \theta =198 \end{cases}\implies s=\cfrac{(8)\pi (198)}{180}\implies s\approx 27.6

4 0
2 years ago
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