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ICE Princess25 [194]
2 years ago
15

Please help will mark brainliest! Write an equation for each graph and show work

Mathematics
2 answers:
kvv77 [185]2 years ago
8 0
The equation to use is
y = mx + c

The first thing you need to know is the gradient represented by the m

Do you know how to find the gradient
anyanavicka [17]2 years ago
8 0

Answer:

y = -3x² - 3x + 6

Step-by-step explanation:

main formula: r×(x² - (a + b)x + ab) = y

r×(x² - (-2 + 1)x -2×1) =y

r×(x² +x -2) = y

by using the point (0,6) →

r×(0² + 0 -2) = 6

r×-2 = 6

r= -3

so

y= -3x² -3x +6

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The perimeter of a regular octagon is 55.2 mm. Write and solve an equation to determine the length of each side of the octagon.
Katena32 [7]

Answer:

6.9

Step-by-step explanation:

An octagon has 8 sides so:

55.2=8*x

x=55.2/8=6.9

3 0
3 years ago
Can somebody help me please !?
r-ruslan [8.4K]

Answer:

option 4) x = 14  y = 7

Step-by-step explanation:

We are given a side angle and a side length so we can use trigonometry to find the solution

To find x we can use sine because the given side length is opposite to the angle so,

sin(60) = \frac{7\sqrt{3} }{x}

solve for x and you get 14 (make sure you check that your calculator is in degrees)

for either use Pythagorean theorem or remove sine by tangent.

4 0
3 years ago
Determine which postulate or theorem can be used to prove that ABC=DCB
lianna [129]

Answer with explanation:

In Δ ABC and ΔD BC

∠A=∠D-------Given

∠ABC=∠DCB-------Each being 90° given in the Diagram.

Side, BC is Common.

⇒⇒Δ ABC ≅ ΔD BC-------[AAS]

When two triangles are congruent , their areas are equal.

So, Area(ABC)=Area (DCB)

Option B :⇒ A AS

3 0
3 years ago
Read 2 more answers
Stick a pencil down my licorice
Masteriza [31]
What????????????
Don't post unless you really need help<span />
8 0
3 years ago
Rectangles. Please help!
nataly862011 [7]
First you have to canceled out the fours from both side 4x/4-12/4 so x=3 then you do the same thing to the 7x-18

4x-12.
4x/4-12/4. So x=3
The fours cancelled out

7x-18
7x/7-18/7. So x= 2 4/7
The sevens cancelled out

7 0
3 years ago
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