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mezya [45]
4 years ago
9

What is the value of the expression 5/7 divided by 8/9

Mathematics
1 answer:
kirill115 [55]4 years ago
7 0
45/56
5/7 divided 8/9
5/7 times 9/8
45/56
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Help me do 7,8 and 9 please
kogti [31]
YOU HAVE TO FIND THE SLOPE m

The formula to find the slope is m=(y₂-y₁)/(x₂-x₁)

Since we have the coordinate of each point, then we can calculate the slope m

7) (-6-3)/(2+4) = -9/6 =-3/2 (slope negative so the function falls

8) (-1-1)/(7-7) = -2/0 (tan ---> ∞ ) VERTICAL

9) (-2+2)/(5-3) = 0/2 = 0 slope = 0 ===> Horizontal
7 0
4 years ago
If (3-4i) (x+iy) = 3 root 5<br> show that x^2 + y^2=9/5
NNADVOKAT [17]

Answer:

the answer is 2 + i.

Step-by-step explanation:

Let the square root of 3 + 4i be x + iy.

So (x + iy) (x +iy) = 3 +4i

=> x^2 + xyi + xyi + i^2*y^2 = 3 + 4i

=> x^2 – y^2 + 2xyi = 3 + 4i

Equate the real and complex terms

=> x^2 - y^2 = 3 and 2xy = 4

2xy = 4

=> xy = 2

=> x = 2/y

Substitute in

=> x^2 - y^2 = 3

=> 4/y^2 - y^2 = 3

=> 4 – y^4 = 3y^2

=> y^4 + 3y^2 – 4 = 0

=> y^4 + 4y^2 – y^2 – 4 =0

=> y^2(y^2 + 4) – 1(y^2 + 4) =0

=> (y^2 – 1) (y^2 + 4) =0

Therefore y^2 = 1, we ignore y^2 = -4 as it gives complex values of y.

Therefore y = 1 and x = 2/1 = 2

The required square root of 3 + 4i is 2 + i.

5 0
3 years ago
How many square feet of outdoor carpet will we need for this hole​
DIA [1.3K]

Answer:

39ft²

Step-by-step explanation:

Divide up the Shape

Big rectangle:

a=lw

11*3=33ft

Small rectangle

2*3=6ft

Whole shape:

33+6=39ft²

4 0
3 years ago
Slope pls help ASAP due today
IrinaVladis [17]

Answer:

y = 2x - 3

Step-by-step explanation:

Slope = 2

Y-intercept = -3

3 0
3 years ago
There are 221 students on a field trip.
DerKrebs [107]

The number of students in each bus is an illustration of a linear function

The equation that represents the number of students in each bus is: \mathbf{s= \frac{216}{6}}

The number of students is given as:

\mathbf{Students = 221}

Subtract 5 from the equation, to get the number of students that fill the bus

\mathbf{b= 221 - 5}

\mathbf{b= 216}

Divide both sides by 6 to get the number of students in a bus

\mathbf{\frac{b}{6}= \frac{216}{6}}

Represent students in the bus with s

\mathbf{s= \frac{216}{6}}

Hence, the equation that represents the number of students in each bus is: \mathbf{s= \frac{216}{6}}

Read more about linear equations at:

brainly.com/question/11897796

3 0
3 years ago
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