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Sonbull [250]
3 years ago
8

Evaluate the square root of x^2 - 5x when x = 7. Round your answer to the nearest hundredth

Mathematics
2 answers:
Troyanec [42]3 years ago
5 0
X^2-5x, given x=7,

(7)^2-5(7)=14

sqrt(14)=3.74
sesenic [268]3 years ago
3 0
OK, <span>72</span>−<span><span>(5)</span><span>(7)</span></span><span>=<span>14
Its 14 because you plug in the sevens then you get 49-35 which is 14. Hope this answer helps you and mark as brainliest! :)</span></span>
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3X-4 over 14 equals 9 over 10 solve for x
Maru [420]

Answer:

3x-4/14=9/10

You change the subtraction to addition

3x+4/14=9/10

Then you change the fractions to decimals

Step-by-step explanation:

8 0
3 years ago
X and y is the variable <br> 4x-7y=3<br> x-7y=-15<br><br> what is the answer please
andrezito [222]
Use linear combination to solve this. It is much faster than substitution. I would start by multiplying the bottom equation by -1.
<span>4x-7y=3
-x+7y=15</span>
Then, add the two equations together. The result is:
3x=18.
You've eliminated one variable. Now you can solve for the other one.
Divide both sides by 3 to get
x=6
Plug this into one of the original equations, then solve for y
-(6)+7y=15
7y=21
y=3

Check your work by plugging these values into both equations to see if they remain true

6 0
3 years ago
Two Step Equation<br> 9-2x=35
Rudik [331]

9 - 2x = 35

-9            -9

-2x = 26

_______

-2         -2

x = -13

Hope this was helpful :)

6 0
3 years ago
Read 2 more answers
HELP ASAP!!!!<br> Simplify. 4√16x^4y^12 Assume all variables are nonnegative.
Lina20 [59]

Answer:

The given Expression is

4\sqrt{16x^4y^12

= 4 × terms under square root are non negative.so we can break it into different terms.

= 4 × √16 ×\sqrt{x^4}\times\sqrt {y^{12}}

Breaking into factors

= 4 × \sqrt{2\times2\times\times2\times2 } \times\sqrt{x \times x \times x \times x } \times \sqrt{ y \times y \timesy \times y \timesy \times y \times y \times y \times y \times y \times y \times y \times y \times y

= 4× 2 \times2 \times x \times x \times y\times y\times y\times y\times y\times y

= 16× x^{1+1}\times y^{1+1+1+1+1+1}

= 16 x^2 y^6




5 0
3 years ago
I need to know #22b and #22c.
anastassius [24]
Read the problem CAREFULLY and underline key words. You'll get it 
8 0
3 years ago
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