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Ber [7]
2 years ago
7

My sis needs help asap

Mathematics
2 answers:
Stells [14]2 years ago
6 0

\frac{3}{4}-\frac{5}{12}\\

First make the denominators equal so you can easily add the numerators

Common Factor of 4 and 12: 12

So multiply \frac{3}{4} with 3 for both numerator and denominator (4*3=12, to make denominator equal)

\frac{9}{12} - \frac{5}{12} =\frac{4}{12}

Simplify further

\frac{4}{12} =\frac{1}{3}

\frac{1}{3} is the answer

Hope it helps!

Alika [10]2 years ago
3 0

Answer:

3/4 - 5/12

Step-by-step explanation:

first you make the demoninators the same so 3*4=12

and if you *3 you do it to the numerator

so its 9/12-5/12

the unsimplified fraction is 4/12

if wanted simplified version its 1/3

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Simplify the expression 3x + 4
cestrela7 [59]

Answer:

it is already simplified

Step-by-step explanation:

3x + 4 is simplified already

3 0
3 years ago
Read 2 more answers
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
4 0
3 years ago
At 3pm the temperature was 9 degrees .By 11pm ,it had dropped 31 degrees .What was the temperature at 11pm
o-na [289]

Answer:

-22

Step-by-step explanation:

9-31=-22

5 0
3 years ago
Are 2a and 2b like terms ? explain .
djyliett [7]

Answer:

Nope

Step-by-step explanation:

Since they both have different variables they aren’t like terms

4 0
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14+-6 what is the answer answer
Irina-Kira [14]

Answer:

the answer is 8. just think of it as subtraction. subtract +6 from +14. then you get the answer for +14+-6.

3 0
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