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spin [16.1K]
3 years ago
5

I REALLY NEED SOMEONES HELP ON THIS PLEASE!! I NEED THIS DONE TODAY!

Mathematics
1 answer:
Rufina [12.5K]3 years ago
8 0
The 5 in x - 5 needs to be negative in the table. So, change that and make everything else in that row negative.

You are then left with 3x^2 + x - 15x - 5

Simplify to 3x^2 - 14x - 5



Please consider marking this answer as Brainliest to help me advance. If you have any questions, please let me know.
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Rewrite the quadratic function in vertex form.<br> Y=5x^2-10x+2
Natalka [10]

Answer:

y = 5x2 + 10x - 15

We want this in format y = a(x-h)2 + k

where the vertex will be at (h,k)

y = 5(x2+2x) - 15

Complete the square on x2+2x

y = 5(x2+2x+1) - 15 - 5

We subtract 5 at the end because we are actually adding 5(1) = 5

so we need to remove it also to keep the total equal

y = 5(x+1)2 - 20

The vertex is at (-1,-20)

3 0
3 years ago
Can't figure out number 6. need help!!​
joja [24]

Answer:

Step-by-step explanation:

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3 0
3 years ago
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What is the first step in solving 2x=y X+y=30
Vanyuwa [196]

Answer: x = 10 y=20

Step-by-step explanation:

You can answer this question by plugging in each equation:

2x=y, x+y=30. Let us plug y as 2x in the second equation x+y=30

x+2x= 30

3x= 30

x=10

After we found x we can then find y by plugging the 10 for x.

2(10) = y

y =20

or you could plug in the other equation

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subtract 10 from 30 and we get 20

to double check we can plug in both numbers

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and 10 + 20 = 30 which is correct

8 0
3 years ago
Solve the right triangle ABC with right angle C if B=30 degrees and c=10.
kenny6666 [7]
C=10, C=90°, B=30°, A+B+C=180°
A+30°+90°=180°⇒A=60°

cos30°=a/c
cos30°=a/10⇒a=cos30°*10
a<span>≃8.6602


c²=a²+b²⇒b²=c²-a²
b²=10²-8.6602²⇒b²=25
b=5
</span>
3 0
3 years ago
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What is 0.11/5.973 please show work
german

Answer:

  0.0184162062615101289...

Step-by-step explanation:

In the attachment, the quotient is calculated "by hand" to 7 decimal places (6 significant figures). The quotient is a repeating decimal with a 180-digit repeat.

This is a good problem for your calculator.

5 0
3 years ago
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