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bogdanovich [222]
2 years ago
15

I need help with number 11

Mathematics
1 answer:
FinnZ [79.3K]2 years ago
6 0

Answer:

-b/2a is the equation to find the x coordinate of the vertex point and it's y, when x is plugged into the quadratic equation.

Step-by-step explanation:

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A China cup and saucer cost 12$. The cup on its own cost 3$ more than the saucer. Form an eqaution for s and solve it. Find the
Sloan [31]
If the cup = S + 3
and the
saucer = S
then


(S + 3) + S = 12
2s + 3 = 12
2s = 9
s = 4.50

So by itself the saucer costs $4.50. To find the cost of the cup look to the beginning of the problem where we learned that

Cup = S + 3
cup = 4.50 + 3
cup = 7.50

So the saucer is $4.50 and the cup is $7.50...

4.50 + 7.50 = $12.00

It checks!
5 0
3 years ago
2. You and six friends order three large pizzas for a pizza party. Each large pizza had twelve pieces. There
Veronika [31]

Answer:

5

Step-by-step explanation:

12+12+12= 36

36-7= 29

3+3+3=9

29-9=20

20÷4=5

7 0
3 years ago
Mikayla and her two friends made a pizza and cut it into 8 equal sized slices. Of makayla and her friends ate 5 slice of pizza w
Nikitich [7]

Answer:

0.375

Step-by-step explanation:

1/4= 0.25

0.25/2=1/8

0.125=1/8

0.125x3=3/8

0.375=3/8

8 0
3 years ago
What is the slope of all lines parallel to the line 4x-5y+-1?
Bond [772]

Given equation of the line ,

\implies 4x - 5y +(-1) = 0

Simplify ,

\implies 4x - 5y - 1 = 0

Transpose terms to RHS ,

\implies 5y = 4x - 1

Divide both sides by 5 ,

\implies \boxed{ y =\dfrac{4}{5}x -\dfrac{1}{5}}

Now we know the slope intercept form of the line as y = mx + c we have ,

  • m =\dfrac{4}{5}

As we know that the slope of all parallel lines are same . Henceforth ,

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5 0
3 years ago
Fourteen is 6 less a number (n). Which equation shows this relationship?
Klio2033 [76]

Answer:

14+6=n=20

Step-by-step explanation:n=20

8 0
3 years ago
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