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strojnjashka [21]
3 years ago
11

True or false someone plzzzzz helppppp!!!!

Mathematics
1 answer:
anzhelika [568]3 years ago
8 0

Answer:

false

Step-by-step explanation:

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Write an equation for the description.<br> The difference between a number x and 19 is 27.
ra1l [238]

Answer

x-19=27

Step-by-step explanation:

4 0
3 years ago
A music store sold a total of 27 used trumpets and clarinets in one month. Trumpets cost $149 and clarinets cost $99. If total s
vodomira [7]
Answer: 16

Solution:

1) Use letters to identify the variables:

Number of trumpets: t
Number of clarinets: c

2) Translate each statement into algebraic (mathematical) language.

2.1) Sold a total of 27 used trumpets and clarinets

=> t + c = 27

2.2) Trumpets cost $149 and clarinets cost $99

Total cost of the trumpets: 149t
Total cost of clarinets: 99c

Total cost = 149t + 99c

2.3) Total sales were $3223

=> 149t + 99c = 3223.

3) State the system of equations:

Equation (1) t + c = 27
Equation (2) 149t + 99c = 3223

4) Solve the system of equations:

4.1) Multiply equation 1 by 149:

=> 149t + 149c = 4023

4.2) Subtract the equation (2) from the equation obtained in 4.1

=> 149c - 99c = 4023 - 3223

=> 50c = 800

=> c = 800 / 50 = 16

5) Verify the solution:

From equation (1) t = 27 - 16 = 11

Total cost = 149*11 + 99*16 = 3223

Now you have a verified answer: they sold 16 clarinets
7 0
3 years ago
Best estimate 27x1/7
FinnZ [79.3K]
27/7 or Decimal: 3.857143
8 0
3 years ago
The equation of line AB is y = 1 over3x - 1. write a equation of a line perpendicular line AB in slope-intercept form that conta
k0ka [10]
Y =1/3x - 1 so slope = 1/3
if <span>perpendicular, slope = -3

passing thru (4,-2) then
y = mx +b
-2=-3(-2) + b
-2=6+b
-2-6 = b 
so b = -8

equation:
y = -3x - 8</span>
4 0
3 years ago
What’s this i forgot how to do it
Mumz [18]
X and y intercepts. So x intercept is where y=0 and y intercept is where x=0. Also positive or negative meaning where y>0 (positive) and where y<0 (negative). Use these hints to do it. If you can’t then just let me know...
4 0
3 years ago
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