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Serjik [45]
3 years ago
10

What is 5/6 + (-4/9) - (-2)

Mathematics
1 answer:
timofeeve [1]3 years ago
8 0

Answer:

2 7/18.

common denominator

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4 less than the quantity of 8 times n
Nina [5.8K]
Okay, my prior answer got deleted for no work, apparently.
I'll re-post it though.

That word problem translates to:
8n -4=0 \\ +4 \\  \\ 8n=4 \\ /8 \\  \\ n=1/2
6 0
3 years ago
What is the length of chord XY
Sergeeva-Olga [200]

Answer:

|XY|=18cm

Step-by-step explanation:

Since the chord is a tangent to the smaller circle, it will meet the radius of the smaller circle at right angle.


Let d be the length of half of the chord. See diagram in attachment.


Then from Pythagoras Theorem,

d^2+12^2=15^2


\Rightarrow d^2+144=225


\Rightarrow d^2=225-144


\Rightarrow d^2=81

We take the positive square root of both sides to obtain,

d=\sqrt{81}=9


The length of the chord is

2d=2(9)=18cm

The correct answer is A

7 0
3 years ago
HELLLLLPPPPPPPPPP WITH THESE QUESTIONS
vredina [299]
What questions? Idk where the pic is
3 0
3 years ago
Please help I need help
qaws [65]

The first answer of part A is 32

So 4y means you have to multiply 4 by y, which is 20 since 4x5=20

And then you add 12, which is 32.

The second answer to part A is 40

With the second question of part a, the expression is basically saying 4 times whatever 5+3 is. So 5+3= 8, and 4(8) is 40

For part B, they are equivalent because let’s pretend y=2. 12+4y= 20. And then 4(y+3) would equal 20 because 4(2)=8 and 4(3)=12 and 8+12=20. This might not be the answer that your teacher is looking for, but it’s still a right answer so technically they can’t say it’s wrong unless you have a super unfair teacher

3 0
3 years ago
Please help!!! i need this done by tonight!! 50 points!!
Vinil7 [7]

The equation of best fit is y = (-22/5)x + 10.

What is an equation of a line?

The equation of a line is given by:

y = mx + c where m is the slope of the line and c is the y-intercept.

Example:

The slope of the line y = 2x + 3 is 2.

The slope of a line that passes through (1, 2) and (2, 3) is 1.

We have,

The following coordinates are given:

Pick two coordinates.

(0, 10) and (25, -100)

The equation of best fit.

y = mx + c

Now,

m = (-100 - 10) / (25 - 0)

m = -110 / 25

m = -22/5

Now,

(0, 10) = (x, y)

10 = (-22/5) x 0 + c

c = 10

Now,

y = mx + c

y = (-22/5)x + 10

Thus,

Using the coordinates the equation of best fit is y = (-22/5)x + 10.

Learn more about equation of a line here:

brainly.com/question/23087740

#SPJ1

5 0
1 year ago
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