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mestny [16]
3 years ago
15

The quadratic function f(x)=-5x^2+5 does the parabola open up or down

Mathematics
1 answer:
yulyashka [42]3 years ago
5 0
It opens down.
Since the beginning number -5x^2 is negative, it will open down.
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CAN SOMEONE PLEASE HELP ME WITH THIS QUESTION? 4x+2=7x-37
grin007 [14]
<h2>Answer:</h2><h2>x = 13</h2><h2 /><h2>Hope this helps!!</h2>

5 0
2 years ago
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Divide £88 between Bill and Sam. If Sam gets
Lynna [10]
<h3>Answer:  £66</h3>

Your teacher may want you to leave off the pounds sign.

==========================================================

Explanation:

x = amount Bill gets

3x = amount Sam gets, because he gets three times as much

x+3x = 4x = total amount of money

4x = 88

x = 88/4

x = 22

Bill gets £22

3x = 3*22 = 66

Sam gets £66

Note that 22+66 = 88 to help confirm the answer.

4 0
3 years ago
To create an entry​ code, you must first choose 3 letters and​ then, 6 ​single-digit numbers. How many different entry codes can
Anettt [7]
Well, you would use factorization for this, which would be MORE than 54 different codes! :D

7 0
3 years ago
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Two cards are drawn without replacement from a standard deck of 52 cards. What is the probability that one of the cards is red a
alukav5142 [94]
Total cards = 52
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Total black cards = 26

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P(one red and one black) =(26/52)(26/51) + (26/52)(26/51)
P(one red and one black) = 26/51 (Answer A) 

-----------------------------------------------------
Answer: 26/51 (Answer A) 
-----------------------------------------------------
5 0
3 years ago
4x+2(3x-9)=42 what is x equal
katrin2010 [14]
<span>4x+2(3x-9)=42
first we want to distribute the 2 using the distributive property
4x+6x-18=42
Then we simplify
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we add 18 to both sides
10x=60
divide both side by 10
x=6</span>
8 0
3 years ago
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