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Keith_Richards [23]
3 years ago
15

Solve the proportion. 8/7 = n/9

Mathematics
1 answer:
RoseWind [281]3 years ago
5 0
\frac{8}{7} = \frac{n}{9}

Cross multiply the fractions:

7 \times n = 7n
8 \times 9 = 72

7n = 72

Divide both sides by 7 to get n by itself:

72 \div 7 = 10.28
n = 10.28

The value of n is 10.28.
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Write an equation of the line that passes through the point (-6, -9) with slope-5.
Art [367]

Answer:

y+9=-5(x+6)

Step-by-step explanation:

We are being asked to write the equation in point-slope form:

y-y_1=m(x-x_1) where m = slope and the first point = (x_1,y_1)

In this case, the slope is -5 and the point is (-6,-9) so the equation will be:

y+9=-5(x+6)

Want to learn more about point-slope form? Check the link out:

https://www.albert.io/blog/point-slope-form/#What_is_point_slope_form

3 0
3 years ago
Solve x – 7 > –8.
IgorC [24]
Question 1.

x - 7 > - 8

Adding 7 to both sides, we get:

x - 7 + 7 > - 8 + 7

x > -1

Thus the answer to the inequality is option Fourth.

Question 2.

A number exceeds 66. Let that number be x. The number exceeds 66 means that the number is larger than 66. So in form of an expression we can write the inequality as:

x is greater than 66

x > 66

So, option 1st gives the correct answer.


Question 3.

The tiles are square shaped and area of a square can be calculated as the square of its Length.

Area of square = (Length)²

If we are given the Area, we can find the length as:

Length = \sqrt{Area}

For Tile A, the length will be:

Length= \sqrt{9}=3  
So length is a Rational number

For Tile B, the length will be:

Length= \sqrt{25}=5  
So length is a Rational number

For Tile C, the length will be:

Length= \sqrt{34}  
So, Length is not Rational.

For Tile D, the length will be:

Length= \sqrt{76}  
Length is not Rational

Thus, the lengths of Tile A and Tile B are rational only.

Therefore, the correct answer is 1st option  
8 0
3 years ago
Write 60% as a
Setler79 [48]

Answer:

The answer is three fiths

7 0
3 years ago
Nolan begins a savings account with $100 at 2% interest according to the equation , where Vn is the value of his account after x
AleksAgata [21]
$94.23...............
6 0
3 years ago
Equation for the given function
Lera25 [3.4K]

Answer:

Step-by-step explanation:

hello :

g(x) = (x+2)(x-4)/(x+2)(x-1)

1 )  this function no exist for if : x= -2 and 1

so the denominater is : (x+2)(x-1)

so : b= 2  and c=1

2) the x- intercept is : 4

so the numerater is : (x+2)(x-4)

g(x) =0 if : (x+2)(x-4)=0

means x-4=0    ...   (  x+2 ≠ 0)

note :

g(x) ≠ (x-4)/(x-1) except in the case  x ≠ -2  

7 0
3 years ago
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