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Alex Ar [27]
3 years ago
7

What is the simplest form of this expression? 4(-m-1)-5

Mathematics
1 answer:
wel3 years ago
3 0

Answer:

-4m-9      Here is the answer :)

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Jeff answered all 25 questions on his chemistry test. For each right answer, he got 4 points and for each wrong answer he lost 2
timurjin [86]

Answer:

Jeff got 20 answers right.

Step-by-step explanation:

The maximum number of points Jeff can get is 100. (25 * 4) However, for each question he gets wrong, he's actually losing 6 points because he doesn't get the four points for getting right, and has the additional -2 points for getting it wrong. Since he only got a score of 70, that means he lost 30 points.

30/6 = 5. So he missed 5 question and got 20 question right.


5 0
4 years ago
What are the coordinates of the vertex of the parabola described by the equation below? y=7(x+5)^2-4
Ipatiy [6.2K]

Answer:

y= 7(x+5)^2 -4

The vertex form for a parabola is given by this expression:

y = a(x-h)^2 +k

By direct comparison we see that for this case:

a = 7, h = -5 and k=-4

And we know from the general expression that the vertex is:

V= (h,k)

So then the vertex for this case is:

V= (-5,-4)

Step-by-step explanation:

For this case we have the following function:

y= 7(x+5)^2 -4

And we need to take in count that the vertex form for a parabola is given by this expression:

y = a(x-h)^2 +k

By direct comparison we see that for this case:

a = 7, h = -5 and k=-4

And we know from the general expression that the vertex is:

V= (h,k)

So then the vertex for this case is:

V= (-5,-4)

4 0
3 years ago
Pls help thank you :)
Nastasia [14]
12 m is the area! hope i could help
5 0
3 years ago
Read 2 more answers
Subtract.<br><br><br><br> ANSWERS: <br> 3x + z + 9<br> 3x - 16y - z + 9<br> 3x - z + 9
gavmur [86]
3x-16y-z+9
i know this is right!
hope this helps!
3 0
3 years ago
Read 2 more answers
The difference between three times a number and seven is twenty. What is the number?
Mama L [17]

Answer:

9

Step-by-step explanation:

(9*3) = 27 which is 20 more than 7

6 0
3 years ago
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