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Liono4ka [1.6K]
3 years ago
14

1. Simplify the following expression: (x + 6y) − (8x − 10y). If the final answer is written in the form Ax + By, what is the val

ue of A? (2 points)
__________
Mathematics
1 answer:
vovikov84 [41]3 years ago
4 0
I believe that the value of A is -7

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Here is a list of numbers:
vladimir2022 [97]
The median is effectively the middle number, so first we need to order them from smallest to biggest, which would be:
0.5, 1, 1.5, 2,2, 3.3, 5.4, 6.2, 8.4, 8.8
Therefore, the median is 3.3.

Hope this helps!
4 0
3 years ago
A baseball is hit into the​ air, and its height h in feet after t seconds is given by h(t)= -16t^2+128t+2. The height of the bas
tankabanditka [31]

Answer:

\large \boxed{\sf \ \text{2 feet, 4 seconds, 258 feet } \ }

Step-by-step explanation:

Hello,

To know the height of the baseball when it is hit we have to compute h(0), as t = 0 is when the baseball is hit into the air.

h(0)=-16\cdot 0^2+128 \cdot 0+2=2

So, the answer is <u>2 feet.</u>

<u />

h(x) is a parabola which can be written as ax^2+bx+c, it means that the vertex is the point (-b/2a,h(-b/2a)).

The baseball reached its maximum height after

   \dfrac{-b}{2a}=\dfrac{-128}{-2*16}=\boxed{4 \text{  seconds}}

And the maximum height of the baseball is h(4).

h(0)=-16\cdot 4^2+128 \cdot 4+2=-256+512+2=\boxed{258 \ \text{feet}}

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

8 0
3 years ago
Select all of the following that are quadratic equations. 7x2 + 14x = 0 x3 - 3x2 + 1 = 0 5x - 7 = 0 x2 + 3x -5 = 0 x - 5 = 9x +
Tpy6a [65]

Answer:

7x2 + 14x = 0

x2 + 3x -5 = 0

x2 - x = 3x + 7  

Step-by-step explanation:

A quadratic equation has the highest power of x to the second power.  It must have x to the second power

7x2 + 14x = 0  quadratic

x3 - 3x2 + 1 = 0   not quadratic  but cubic

5x - 7 = 0  not quadratic  but linear

x2 + 3x -5 = 0   quadratic

x - 5 = 9x + 7  not quadratic but linear

x2 - x = 3x + 7  quadratic

4 0
2 years ago
Need help with 6÷4,477
sukhopar [10]
The "CORRECT" answer is 746 with a remainder of 1

I hope this helps. 

Have a "AWESOME" day! 

:)
7 0
3 years ago
Read 2 more answers
There are 57 people and i want everyone to have a slice of cake and i want to pay as little as possible and I want them to be th
julsineya [31]
So,

If you do some simple division, you will find how much each cm costs in each cake.
20cm cake = 67.5 cents/cm
25cm cake = 93.75 cents/cm

Assuming that you cannot order fractions of cakes, the best deal would be to order 5 of the 20cm cakes.
Cost = 13.50 * 5 = $67.50

You will have to pay $67.50 for the cakes if you want the best deal.
8 0
3 years ago
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