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QveST [7]
3 years ago
8

SOMEONE PLEASE HELP, I DO NOT UNDERSTAND.

Mathematics
1 answer:
notka56 [123]3 years ago
6 0
To find an equation with specific roots, we have an equation if the form y=A(x-h)(x-k) where the roots are h and k. this is because when you plug in x=h or x=k, you get y=A(h-h)(h-k)=A(0)(h-k) = 0

so for the first question, we have
y=A(x-(-10))(x-(-6))=A(x+10)(x+6)

but the vertex must be at (-8,-8), which means when x=-8, then y=-8

plugging this in we get:
-8=A(-8+10)(-8+6)
-8=A(2)(-2)
-8=A(-4)
A=2

so our final answer is
y=2(x+10)(x+6)

using the same method the answer so the second one is:

y=-(x-2)(x-4)
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This table shows numbers of sweets in some tubes, but a coffee stain has deleted one of the figures.
svlad2 [7]
To get the answer, you need to think of it like a see-saw.
Both sides must equal the same relative to 33.5. For example, 32 is 1.5 away from 33.5 so you could say you have 1.5*4 (because theres 4 tubes with 32 sweets). If you were to do this for the whole table, it would look something like this:

(1.5*4)+(0.5*x)=(0.5*9)+(1.5*1)+(2.5*1)

This simplifies to:

6+0.5x=8.5
0.5x=2.5
x= \frac{2.5}{0.5}
x=5

This method can sometimes be inefficient depending on how many values but is probably the simplest way to solve this problem.

hope this helps :)

(sorry the other way is kinda hard to explain possibly ask your teacher tomorrow)
6 0
3 years ago
What is a equivalent ratio of 45 and 90
lakkis [162]

Answer:

90:180, 135:270, 180:360

   

Step-by-step explanation:

7 0
4 years ago
True or False:
DIA [1.3K]
True. If you're just changing the form, yes. But remember when you change one side of an equation, you must change the other in the same way.
7 0
3 years ago
Read 2 more answers
What is the perimeter of a regular pentagon with a
choli [55]

Answer:the perimeter of the regular pentagon is 5x + 20

Step-by-step explanation:

The perimeter of a plane figure is the distance around the plane figure. The pentagon is a plane figure. It has 5 sides. Since it is a regular Pentagon, it means that all the sides are equal.

From the information given, the length of each side of the regular Pentagon is x + 4

The perimeter of the regular Pentagon would be 5 times the length of each side. It becomes

5(x + 4) = 5x + 20

3 0
3 years ago
a jug of orange juice is made by mixing 21 juice with 51 how many litres of water will be needed for 61 of juice?​
Fofino [41]
Im just tryna get points
8 0
3 years ago
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