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kodGreya [7K]
3 years ago
14

X^2+8x=38

Mathematics
2 answers:
Alecsey [184]3 years ago
7 0

Answer:

ans may be 3.348469228

marta [7]3 years ago
7 0

Answer:

x = -4 ± 3√6

Step-by-step explanation:

x² + 8x = 38

Complete the square by adding (8/2)² = 16 to both sides.

x² + 8x + 16 = 38 + 16

(x + 4)² = 54

x + 4 = ±√54

x = -4 ± 3√6

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Hi please help i’ll give brain
Cloud [144]

Answer:

The GCF is going to be 30

Step-by-step explanation:

This Is how I find the GCF of 2 numbers. I find the prime factorization first, then I find the common factors and multiply them. Here

The prime factorization of 21, 2 × 3 × 3 × 5= 90

The prime factorization of 28, 2 × 3 × 5 × 7 = 210

The common factors are, 2, 3, and 5. We multiply those to get the GCF.

2 × 3 × 5 = 30

8 0
3 years ago
What’s the Value of x?
denpristay [2]
X will be 8.49
the other side is 6 too
6 0
3 years ago
PLEASE PLEASE PLEASE HELP!!
Marta_Voda [28]
Okay I'll try to show it step by step

Step 1. So first you need to recognise that the diagram is a right angled triangle, with the right angle being at the bottom. This means we can do Pythagoras' Theorem.

Step 2. Now that you know you can use Pythagoras' Theorem, you can apply it. If you don't know, the theorem is a² + b² = c², with, in this case, a being 5 and b being 8. This means we can do 5² + 8² = 25 + 64 = 89.

Step 3. From the previous step, we now know that the length of the side including x is √89, and because we know that part of this side is 3, if we subtract 3 from √89 we get the value of x, so: √89 - 3 = 9.434 - 3 = 6.434, which is your answer.

I hope this helps!
5 0
3 years ago
The point (1, –5) is reflected across the y-axis. A coordinate plane. What are its new coordinates?
luda_lava [24]
<h3>Answer:  Choice C.   (-1, -5)</h3>

Explanation:

The reflection rule we use is

(x,y) \to (-x, y)

when we want to reflect over the y axis. The x coordinate flips from positive to negative, or vice versa, while the y coordinate stays the same.

Therefore, (1, -5) \to (-1, -5)

7 0
3 years ago
Read 2 more answers
Can someone help me
True [87]

Answer:

Why is this long?

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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