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Sergio [31]
2 years ago
6

Plsss helppppppp:))))))

Mathematics
2 answers:
Alinara [238K]2 years ago
5 0

Answer:

5

Step-by-step explanation:

because it is asking what minus 9 is equal to -4

adell [148]2 years ago
5 0

Answer:

5

Step-by-step explanation:

5 - 9= - 4

I don't know if this is confusing but you could also just subtract 5 from 9 (9-5) which is 4 and then put a - in front of it

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Find the values of b <br>b²= 256<br>b=?​
ehidna [41]

Answer:

if b²=256

then b=16

....................

5 0
2 years ago
Read 2 more answers
What value should be added to the expression to create a perfect square? x^2 - 20x
boyakko [2]
To complete the square:
we take the coefficient ox "x" (which in this problem is -20)
we divide it by 2
square that number
then add it to both sides of the equation

-20 / 2 = -10
-10^2 = 100
then we add 100 to both sides of the equation:
x^2 -20x
x^2 -20x +100 = 100
******************************************************
To get the roots of the equation, we take the square root of both sides:
(x -10) * (x-10) = 10
(x-10) = square root (10)
x-10 = <span> <span> <span> 3.1622776602 </span> </span> </span>
x1 = <span> <span> <span> 13.1622776602 </span>
and don't forget that square root of 10 also equals  </span></span><span><span><span> -3.1622776602 </span> </span> </span>
x2 = 10 -<span> <span> <span> 3.1622776602
x2 = </span></span></span> <span> <span> <span> 6.8377223398 </span> </span> </span>


4 0
3 years ago
What is the probability that a student eye color would be blue if their grade in physics is A? A two way table is presented belo
Zarrin [17]
The <u>correct answer</u> is:

16/45.

Explanation:

We want the probability that a student's eye color is blue if they made an A in physics.  This means we look at the column for students with an A.

There are 32 students with blue eyes in the A column.

This is out of 32+58=90 students that made an A.

This makes the probability 32/90, which simplifies to 16/45.
8 0
2 years ago
If a woman get 7000 dollars for every 3 hour how much will she make for 81 hours
vovikov84 [41]

Answer:

567000 dollars

Step-by-step explanation:

Straightforward if 7000 for 3 hours then 3*27=81 and 7000*81=567000

5 0
2 years ago
Read 2 more answers
Help me please- thank you
riadik2000 [5.3K]

Answer:

y=-8/5x+4

Step-by-step explanation:

The slope of perpendicular lines is the opposite reciprocal of the original equation.

To get the opposite reciprocal, flip the fraction and use the opposite sign.

Here, the slope is -8/5 because that is the opposite of 5/8.

To get the equation of the line, use point-slope and then distribute to get the equation in y=mx+b format.

Point slope: y-y1=m(x-x1). Use the coordinate (5,-4) in the equation.

y+4=-8/5(x-5)

Multiply (x-5) by -8/5 and simplify.

y+4=-8/5x+8

y=-8/5x+4

8 0
2 years ago
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