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KatRina [158]
3 years ago
10

The first three steps of completing the square to solve the quadratic equation x² + 4.0 - 6 = 0 are shown

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
4 0

Answer:

The next 3 steps are:
#1: \sqrt{ (x+2)^{2}} =\sqrt{10} -- Using the square root method, we're going to find the square root of both sides.

#2: x+2 = \frac{+}{} \sqrt{ 10 } -- When finding the square root of 10 it has to be + and minus.

#3: x + 2 = \frac{+}{}\sqrt{10}  \\    -2    \ \ \ \ \ \ \     -2\\ -- Subtract 2 on both sides

#4 (solution): x = -2 \frac{+}{}  \sqrt{10}

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What does t equal in 10t = 9?
Fudgin [204]
If 10t = 9
t = 9/10 (as a fraction)

This is equivalent to 0.9

New answer is -0.9. step by step in the comments
6 0
3 years ago
Find the measure of the indicated side or angle.
lozanna [386]

Answer:

60°

Step-by-step explanation:

We'll begin by calculating EC. This can be obtained as follow:

Angle EAC = 39°

Hypothenus = EA = 3.7 m

Opposite = EC =?

Sine EAC = Opposite /Hypothenus

Sine 39 = EC / 3.7

Cross multiply

EC = 3.7 × Sine 39

EC = 2.3 m

Finally, we shall determine angle BEC. This can be obtained as follow:

Adjacent = EC = 2.3 m

Hypothenus = BC = 4.6 m

Angle BEC =?

Cos BEC = Adjacent / Hypothenus

Cos BEC = 2.3 / 4.6

Cos BEC = 0.5

Take the inverse of Cos

BEC = Cos¯¹ 0.5

BEC = 60°

Thus, angle BEC is 60°

7 0
3 years ago
The perimeter of the rectangular picture frame is 108 mm. Find its length and width if the width is 3 more than twice the length
drek231 [11]

Answer: a=17 mm length

               b=37 mm width

Step-by-step explanation:

P=2a+2b

a -length

b-width

b=2a+3

------------------

108mm=2a+2(2a+3)

108=6a+6

6a=102

a=17 mm

b=17*2+3

b=34+3

b=37 mm

7 0
4 years ago
-6x &lt; 48<br> a. x &gt; -8<br> b. x &lt; 8<br> c. x &lt; -8<br> d. x &gt; 8
garik1379 [7]
The answer is A.
If you need an explanation let me know
8 0
4 years ago
Read 2 more answers
Which of the following is equal to 4 and 2/3 ÷ by 3 and 1/2
Natalka [10]

4 and 2/3 = 14/3

3 and 1/2= 7/2

so 14/3:7/2= 14/3*2/7

the B is correct

5 0
3 years ago
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