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kvasek [131]
3 years ago
12

Am I doing this right?

Mathematics
1 answer:
AlekseyPX3 years ago
6 0
Yes you are doing it right
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Follow the process of completing the square to solve x2 - 10x + 8 = 0. How will the left side of the equation factor in step 5?
jasenka [17]

Answer:

x=5(+/-)\sqrt{17}

Step-by-step explanation:

we have

x^{2}-10x+8=0

Group terms that contain the same variable, and move the constant to the opposite side of the equation

x^{2}-10x=-8

Complete the square. Remember to balance the equation by adding the same constants to each side.

x^{2}-10x+5^{2}=-8+5^{2}

x^{2}-10x+25=-8+25

x^{2}-10x+25=17

Rewrite as perfect squares

(x-5)^{2}=17

Take square root both sides

(x-5)=(+/-)\sqrt{17}

Adds 5 both sides

x=5(+/-)\sqrt{17}

8 0
3 years ago
Can someone tell me the answer to this please
lapo4ka [179]

Answer:

Your answer is 132 degrees

7 0
3 years ago
Read 2 more answers
[6+(12-8). 32 ] + 2 =
Mnenie [13.5K]

Answer:

9.28

If this is wrong pls correct me.

4 0
3 years ago
Checking account A charged a monthly fee of $5 and a per-check fee of $0.25, and checking account B charged a monthly fee of $6
Genrish500 [490]
First we need to know both the formula of A and B.

The formula of A is
C = 5 + 0.25p
with C representing total cost and p representing the amount of checks.

The formula of B is
C = 6 + 0.15p
with C representing total cost and p representing the amount of checks.

To find the point where A and B cost the same, we solve the following equation:
5 + 0.25p = 6 + 0.15p

Collecting terms gives us
-1 = -0.1p

Now we have to divide by -0.1 and we get.
10 = p
p = 10

So our answer: after 10 checks both accounts cost the same amount of money. Answer A.
7 0
3 years ago
In a 30-30-90 triangle, the hypotenuse is 38, what is the length of the shortest side
V125BC [204]

Answer:

AB is shortest side

Step-by-step explanation:

According to given question circuit represented as,

From the images

cos 30^0=\frac{BC}{38}  \\0.86=\frac{BC}{38}  \\BC=32.68 cm

Now,

sin 30^0=\frac{AB}{38}  \\0.5=\frac{AB}{38} \\AB=19 cm

Therefore, AB is shortest side

8 0
3 years ago
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