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laiz [17]
3 years ago
5

Lots of point up for grabs

Mathematics
2 answers:
Burka [1]3 years ago
5 0
Minus a from both sides
x-a=-2by²
times both sides by -1
a-x=2by²
divide both sides by 2b
\frac{a-x}{2b}=y^2
sqrt both sides
y= \sqrt{\frac{a-x}{2b}}
Vikki [24]3 years ago
3 0

Answer:

minus a from both sides

x-a=-2by²

times both sides by -1

a-x=2by²

divide both sides by 2b

sqrt both sides

Step-by-step explanation:

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Write the formula for the parabola that has x- intercepts (3,0) and (8,0), and y- intercept (0,−2)
alexira [117]

Answer:x^2-5x=-12(y+2)

Step-by-step explanation:

Given

Parabola has x-intercept has (3,0) and (8,0)

and Y-intercept as (0,-2)

Now the general equation of parabola is

y=ax^2+bx+c\quad \ldots(i)

Substitute  (0,-2) in (i) we get

-2=c

Now substitute (3,0) in equation (i)

0=a(3)^2+3b-2\quad \ldots(ii)

Now substitute (8,0) in equation (i)

0=a(8)^2+8b-2\quad \ldots(iii)

Solving (ii) and (iii) we get

a=\frac{-1}{12}\ \text{and}\ b=\frac{5}{12}

therefore

y=\frac{-x^2}{12}+\frac{5x}{12}-2

12y=-x^2+5x-24

5 0
3 years ago
2,000 into scientific notation
vladimir1956 [14]

Answer:

0.002

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
An envelope is 6 in. wide and 4 in. high. Will a card with an 8 in. diagonal fit in it? Identify the correct explanation.
lisov135 [29]
First we have to find the diagonal of the card. We do this by using the Pythagoras theorem: A^2 = b^2 + c^2
= 6^2 + 4^2
=36 + 16
= 52
A^2= 52
Sqrt A^2 = sqrt 52
A = 7.2
Since the envelopes diagonal is 7.2 inches and the card’s diagonal is 8 inches and 7.2<8. Your answer is c)
5 0
2 years ago
Find the product of 11/2 with the quotient of 3/7 and 3/10
trasher [3.6K]


(11/2) x ((3/7) / (3/10)

(11/2) x (3/7) x (10/3)

330/42

7 6/7 or 7.857142857 ( or 7.86 rounded to nearest hundredth)

4 0
3 years ago
Triangles ABC and DEF are similar
Sloan [31]

Answer:did U Get the answer or no

Step-by-step explanation:

Did u get the answers cuz I got the same question

7 0
3 years ago
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