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yKpoI14uk [10]
3 years ago
7

Which coefficient in the function tells us that the parabola for the function will point downward? y = -2x2 5x - 4

Mathematics
1 answer:
Ludmilka [50]3 years ago
5 0
The answer is 16 I think because 2*2=4*5=20-4=16 so I think 16 is the right answer
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2. Factor completely: f(x) = x4 - 6x2? – 27
VladimirAG [237]

Answer:

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6 0
3 years ago
??? Anyone know how to answer this question
True [87]
Answer: 35 additional teachers are needed

-------------------------------------------------
-------------------------------------------------

Explanation:

We have 2470 students and the ratio of students to teachers is 26:1. This means that for every teacher, there are 26 students. Put another way, we can set up this ratio

2470/x = 26/1

where x is the number of teachers. Cross multiply and solve for x

2470/x = 26/1
2470*1 = 26*x
2470 = 26x
26x = 2470
26x/26 = 2470/26
x = 95

So we have 95 teachers currently

-------------

Let y be the new number of teachers needed to bring the ratio down to 19:1

Using a similar idea as done above, we would have this ratio

2470/y = 19/1

Let's solve for y
2470/y = 19/1
2470*1 = 19*y
2470 = 19y
19y = 2470
19y/19 = 2470/19
y = 130

So we'll need 130 teachers to have the ratio be 19:1

The difference of the values is y - x = 130 - 95 = 35, which is the final answer. This is the additional amount of teachers needed.
5 0
3 years ago
According to exponent rules, when we multiply the expressions we __ the exponents
serious [3.7K]

Answer:

Add

Step-by-step explanation:

6 0
2 years ago
Simplify. y^-3 pls help me i need this very bad
prisoha [69]
My understanding is that when the power is a negative number, move it to the denominator and change it to positive. 
In this case, the base is y, the power is -3
y^(-3)=1/(y^3)
7 0
3 years ago
A linear set of points with a unique starting point and extending infinitely in one direction what term matches the definition?
bija089 [108]

Answer:- Option A "ray" is the right term which matches with the definition.


Explanation:-

A ray is a line that has one fixed endpoint, and extends infinitely along the line from the fixed endpoint.

Therefore, the term which matches with the given definition is "ray".

Thus A linear set of points with a unique starting point and extending infinitely in one direction is called a ray.


5 0
3 years ago
Read 2 more answers
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