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4vir4ik [10]
3 years ago
12

Multiply and simplify: sq rt 7x ((sq rt x)-7sq rt. 7)

Mathematics
2 answers:
Dmitriy789 [7]3 years ago
5 0

Answer:

7x(√x - 7√7) Multiply √7x to "√x" and "-7√7" respectively: 

√7x*√x - 7√7*√7x 

First is to simplify: √7x² - 7√7²x 

Extract the squares: x√7 - 7*7√x 

Then, we simplify: x√7 - 49√x 

After simplifying the equation, I got the answer x√7 - 49√x.

Step-by-step explanation:

jarptica [38.1K]3 years ago
3 0
7x(√x - 7√7) Multiply √7x to "√x" and "-7√7" respectively: 
√7x*√x - 7√7*√7x 
First is to simplify: √7x² - 7√7²x 
Extract the squares: x√7 - 7*7√x 

Then, we simplify: x√7 - 49√x 
After simplifying the equation, I got the answer x√7 - 49√x.
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Y=<br> Pls help solve for
miss Akunina [59]

Answer:

y=39\degree

Step-by-step explanation:

The given triangle is a right angle triangle .

The known sides of the triangle that is opposite to angle y is 8 units while the side adjacent is 10 units.

The value of y can be calculated using the tangent ratio.


\tan(y)=\frac{8}{10}

We solve for y to get,

y=arctan(\frac{4}{5})

We evaluate to obtain,

y=38.66


y=39\degree to the nearest degree


8 0
3 years ago
Can someone help w number 4
strojnjashka [21]

Answer:

angle DFG = 49 degrees

angle JKL = 41 degrees

Step-by-step explanation:

When angles are complementary with each other, it means that if you add both of the angles up, it adds up to 90 degrees.

In this question, you would have to add up angle DFG and angle JKL and find the x that makes the equation equal to 90 degrees.

angle DFG = x + 5

angle JKL = x - 3

(x + 5) + (x - 3) = 90

2x + 2 = 90

2x = 90 - 2

2x = 88

x = 44

But since we have to find out the angle measures, we have to the "x = 44" with the x's in the DFG and JKL angles.

DFG = (44) + 5 = 49

JKL = (44) - 3 = 41

7 0
3 years ago
Which quadrilateral will always have 4- fold reflectional symmetry
Talja [164]
I'm pretty sure it's the square. The square can be divided into 4 equal parts, each part able to reflect each other.  
5 0
3 years ago
Read 2 more answers
I need your help on this one pls its another one but different question<br> and please dont guess
Ainat [17]

Answer:

All except the second one (angle g is not similar to angle r)

Step-by-step explanation:

Just look at the order of the letters. It it's the same, its similar.

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