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Ymorist [56]
3 years ago
10

What is 3√45 + 2√ 80−−

Mathematics
1 answer:
REY [17]3 years ago
4 0
I think that the answer would be <span>17√5.</span>
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Pls help me on this pls
Blizzard [7]

Answer:

1.B not sure about 2 though sorry i couldnt help u on 2 Step-by-step explanation:

5 0
3 years ago
Can I add a photo here because I don't know how to ask a question in math​
geniusboy [140]

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Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Cos^2 2x−cos^2 6x=sin4x sin8x<br> please help me prove it
Olin [163]
Cos² 2x = (1+cos 4x )/2
cos² 6x  = (1+cos 12x)/2
subtract to get  1/2 (cos 4x - cos 12x )   
=  1/2 (2 sin  4x sin 8x )       as cos A - cos B =  2 [ sin (A+B)/2  sin (A-B)/2 ]
so the answer
4 0
3 years ago
Solve for x in the diagram below.
max2010maxim [7]

1: Identify the angle.

<em>The following angle is a 90.</em>

2: Set up the equation.

<em>x + (3x + 10) = 90</em>

3: Combine like terms.

<em>4x + 10 = 90</em>

4: Solve for x.

<em>4x + 10 = 90</em>

<em>      -10 =   - 10</em>

<em>--------------------------</em>

<em>4x = 80</em>

<em>------------------</em>

<em>4          4</em>

<em>x = 20</em>

Your answer is x = 20.

Hope this helps! Have a good day/night! c:


6 0
3 years ago
Read 2 more answers
The Gomes family is on a road trip. On the first day, they drove a distance shown as 3 1/2 inches on a map. The actual distance
marissa [1.9K]
1/r = (3 1/2)/245
(3 1/2)r = 245
r = 245/3 1/2
r = 70

scale is 1 in to 70 miles.
6 0
3 years ago
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