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Shtirlitz [24]
3 years ago
13

Please help me on this question.

Mathematics
2 answers:
Rzqust [24]3 years ago
7 0

Answer:

B? sorry if i'm wrong...

Step-by-step explanation:

EastWind [94]3 years ago
6 0

Answer:

2nd choice i think tell me if its right

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The angles of a triangle are 128 degrees 5x + 10 degrees + 9x degrees what is the value of x
olganol [36]
All the angles in a triangle equal 180 degrees so 128 + (5x+10) + 9x = 180

Group the like values to get 138 + 14x = 180

Subtract 138 from 180 to get 14x = 42

Divide 42 by 14 to get x = 3

Therefore x = 3
6 0
2 years ago
Find the rate of markup if a book cost the retailer 17.50 and sells for $24.95. Round the the nearest tenth if needed
CaHeK987 [17]

Mark up = profit ÷ cost


Let M = mark up


Let p = profit


Let c = cost


M = p/c


Take it from here.


4 0
3 years ago
What is the inverse of function f? A) B) C) D)<br> Plato
kap26 [50]

Answer:

(7x-3)/-1

Step-by-step explanation:

swap the x and y and then move the y by itself

x=(3-y)/7

7x=3-y

7x-3=-y

(7x-3)/-1=y

3 0
1 year ago
Which expressionis equal to (-7x+5.1y)-(-9x+5.3y)
Furkat [3]

Answer:

The simplified expression for the given expression will be:

c. 2x-0.2y

Step-by-step explanation:

Given expression:

(-7x+5.1y)-(-9x+5.3y)

To simplify the expression.

Solution:

In order to simplify the expression, we will first remove the parenthesis by reversing the signs of the terms inside the parenthesis which lies after a negative sign out side the parenthesis.

<em>This is because negative multiplies to a negative to give a positive and negative multiplies to a positive to give a negative.</em>

So, we have:

⇒ -7x+5.1y+9x-5.3y

Combining like terms

⇒ -7x+9x+5.1y-5.3y

<em>The like terms can be evaluated as</em>

-7x+9x=2x

5.1y-5.3y=-0.2y

Thus, the simplified expression will be:

⇒  2x-0.2y

7 0
2 years ago
A salt water solution is cooled to -3C. During an experiment , the mixture is heated so that its, temperature rises at steady ra
JulijaS [17]

Answer:

y = -3+ rx

Step-by-step explanation:

Given

Base = -3C

Time = x

Required

Determine the equation (y)

Let the steady rate be represented with r.

So, the equation (y) can be determined using:

y = Base + Rate * Time

y = -3+ r* x

y = -3+ rx

7 0
3 years ago
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