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marta [7]
3 years ago
15

PLEASEEEEEEEEE HELPPPPPP

Mathematics
1 answer:
Basile [38]3 years ago
3 0

Answer:

7.31 and 0.685

Step-by-step explanation:

x^2 -8x +5 = 0

use the quadratic formula

- (-8) + √(-8^2 -4(1)(5) / 2(1(

(8 + √(64 -20))/2

(8+√44)/2

8+6.63 / 2

14.63/2= 7.31

+7.31

(8- √44)/2 = 0.685

You might be interested in
Xy+(4(20))>x-5y(2+9-7)
prohojiy [21]

I'll solve for y xy+(4(20))>x-5y(2+9-7) 

xy+4(20)>x-5y(2+9-7) 

xy+4(20)>x-5y(4) 

xy+4(20)>x-20y 

xy+80>x-20y 

xy+20y+80>x 

y(x+20)>-80+x 

y>(-80+x)/(x+20)


3 0
3 years ago
I need help with #18,20,22 and 24. Please show your work and I'm really thankful for your help as soon as possible!
Artist 52 [7]
I'll start 18 and 22 for you, and you should then be able to do the rest on your own!

For 18, what we literally do is apply the distance formula for all the points and add them up. For B to C, we get the distance between them to be
sqrt((x1-x2)^2+(y1-y2)^2)=sqrt((0-4)^2+(3-(-1))^2)=sqrt((-4)^2+4^2)=sqrt(16+16)=sqrt(32). Repeat the process for C to E, E and F, and F to B then add the results up to get your answer!

For 22, since the area of a rectangle is length*width (we know given the right angles and that the opposite sides are equal in how long they are), we can multiply 2 perpendicular lines, for example, BC and CE to get sqrt(32)*sqrt(8)=16 as the area
4 0
3 years ago
Write in expanded form 51.242.<br>​
lord [1]

Answer:

50 + 1 + \frac{2}{10} + \frac{4}{100} + \frac{2}{1,000}

Step-by-step explanation:

This is the answer because:

1) 50 and 1 equal to 51

2) The fraction forms of a decimal number is: the decimal number/the decimal number place value

3) Therefore, the answer is 50 + 1 + \frac{2}{10} + \frac{4}{100} + \frac{2}{1,000}

Hope this helps!

3 0
3 years ago
Find the social security tax deducted for each weekly pay check of $237
worty [1.4K]
14.69 in dollars and 6.2 percent 
5 0
3 years ago
Could someone please explain this to me!!! I think it's H
vovikov84 [41]
Yes is H because the symbol mean equal or less than
6 0
3 years ago
Read 2 more answers
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