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andriy [413]
3 years ago
12

I NEED HELP ... SOMEONE PLEASE HELP ME!!!

Mathematics
1 answer:
nordsb [41]3 years ago
4 0
The graph of a quadratic function is called a parabola.
There are 3 forms of quadratic equations.
If A is positive, the parabola opens up or to the right.
If A is negative, it opens downwards or to the left.
All quadratic equations have a vertex, which is the turning point of the graph.
Quadratic graphs are symmetrical across the y-axis, which runs through the axis of symmetry. Formula: x= -b/2a
A quadratic function crosses the y-axis when x=0
The y-intercept always has an x-value of 0.
For a parabola, the y-intercept will be the point(don’t know this one sorry!)
A quadratic function crosses or touches the x-axis once, twice, or never.

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Juniors and seniors at a local school were surveyed to see if they were left-handed or right-handed. The data is displayed in th
Novosadov [1.4K]
P(left handed senior) = 14/(36 + 14 + 44 + 106) = 14/200 = 0.07 = 7%
8 0
3 years ago
Twice the sum of five and x is eight less than x
Anna007 [38]
We need to express this statement into a equation:

First of all. We will walk through the statement step by step into a mathematical language, so:

1. The sum of five and x:

x + 5

2. Twice the sum of five and x:

2(x + 5)

3. Eight less than x:

(x-8)

     Finally the whole statement is:

4. <span>Twice the sum of five and x is eight less than x:
</span>
2(x + 5) = (x-8)
2x + 10 = x - 8
x = -18


4 0
3 years ago
Determine side x. Round to the nearest unit. 20 9 12 5
tatyana61 [14]

Answer:

12

Step-by-step explanation:

First, you will have to use trigonometry. Since the side of the triangleis the opposite of the angle 53 and the hypotenuse, you will use sin.

Sin 53 degrees = opposite side / hypotenuse side.

The opposite side is x and the hypotenuse side equals 15.

sin53= x/15

15 ( sin 53 ) =x

x= 11.97953

Round

x=12

6 0
3 years ago
maggi buys 3/4 pounds of blueberry and uses 3/5 to make a smoothie how many pounds of blueberrys did mggi use to make a smoothie
MrRa [10]

Answer:

0.45pound

Step-by-step explanation:

Since it's given Maggi buys 3/4 pounds of blueberry,it's means 3/4*1 .i.e. 0.75 pound and he uses 3/5 of 0.75 pound then it would be 3/5*0.75 .ie 0.45 pound

3 0
3 years ago
Read 2 more answers
A bag contains red and blue marbles. One-fourth of the marbles are red. If there is one red marble in the bag, how many blue mar
Alenkinab [10]
There are 3 marbles.
4 0
4 years ago
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