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Soloha48 [4]
3 years ago
15

Help me please and thanks you​

Mathematics
1 answer:
galben [10]3 years ago
4 0
Multiply them all together. Then you would get 96
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2. What is the value of 9x – 4y if x = 3 and y = 2?<br> F. 12.<br> G. 19<br> H. 93<br> 1. 27<br> H
Igoryamba

Answer:

G. 19 is your answer dear

Step-by-step explanation:

9(3)-4(2)

27-8 = 19

3 0
2 years ago
Tonisha has a lemonade stand. She has 34$ in expenses and wants to make at least 80$per day.
lukranit [14]

Answer:

is there anything else to the question?

Step-by-step explanation:

8 0
3 years ago
Change 84cm into millimetres
Mars2501 [29]

Answer:

840 mm

Step-by-step explanation:

multiply by 10

7 0
2 years ago
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F(x)=2x^2-x-10 part a: what are the X intercepts of the graph of f(x)? Show your work
Genrish500 [490]
A. x intercepts are where the graph hits the x axis or where f(x)=0
0=2x^2-x-10
solve
hmm
we can use the ac method
multiply 2 and -10 to get -20
what 2 numbers muliply to get -20 and add to get -1 (the coefint of the x term)
-5 and 4
split the midd into that
0=2x^2+4x-5x-10
group
0=(2x^2+4x)+(-5x-10)
factor
0=2x(x+2)-5(x+2)
undistribute
0=(x+2)(2x-5)
set each to 0
0=x+2
0=-2

0=2x-5
5=2x
5/2=x

x intercepts are at x=-2 and 5/2 or the points (-2,0) and (5/2,0)


B. ok, so for f(x)=ax^2+bx+c
if a>0, then the parabola opens up and the vertex is a minimum
if a<0 then the parabola opens down and the vertex is a max

f(x)=2x^2-x-10
2>0
opoens up
vertex is minimum

ok, the vertex

the x value of  the vertex in f(x)=ax^2+bx+c= is -b/(2a)
the y value of the vertex is f(-b/(2a)) so
given
f(x)=2x^2-x-10
a=2
b=-1
-b/2a=-(-1)/(2*2)=1/4
f(1/4)=2(1/4)^2-(1/4)-10
f(1/4)=2(1/16)-1/4-10
f(1/4)=1/8-1/4-10
f(1/4)=1/8-2/8-80/8
f(1/4)=-81/8
so the vertex is (1/4,-81/8) or (0.25,-10.125)


C. graph the x intercepts and the vertex
the vertex is min and the graph goes through the x intercepts
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3 years ago
Determine the axis of symmetry of the Quadratic equation.
Marat540 [252]
B/X=2
OWA OWA 20 minimum word
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