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Stells [14]
3 years ago
10

Brianna had $20 but spent d dollars on ice cream. Write an expression to represent how much money Brianna has after buying ice c

ream. also what is the variable and operation ​
Mathematics
1 answer:
Afina-wow [57]3 years ago
5 0

Answer:

20-d= x

d= money spent

x= money left

Step-by-step explanation:

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Which group of organism has the shortest record of life on earth
Kaylis [27]
That would be.... placoderm fish
7 0
3 years ago
Brenda school is selling tickets to a spring musical on the first day of ticket sales for school so three senior citizen tickets
MrRa [10]

Answer:

senior citizen cost $4

children cost $7

Step-by-step explanation:

The question is not complete

<em>Brenda's school is selling tickets to a spring musical. On the first day of ticket sales the school sold 3 senior citizen tickets and 9 child ... The school took in $67.00 on the second day by selling 8 senior citizen tickets and 5 child tickets. What is the price each of one senior citizen ticket and one child ticket?</em>

Given data

let senior citizens be x

and children be y

so

3x+9y= 75--------------1

on the second day

8x+5y= 67------------2

solve 1 and 2 above

3x+9y= 75     X8

8x+5y= 67      X3

 24x+72y=600

-24x+15y=201

   0x+57y= 399

divide both sides by 57

y= 399/57

y= $7

put y= 7 in eqn 1 above

3x+9*7= 75

3x+63= 75

3x=75-63

3x=12

x= 12/3

x= $4

7 0
3 years ago
Which expression is equivalent to (x^1/2y^-1/4z)^-2?
tiny-mole [99]

Answer:

y^1/2/xz^2 option 3

Step-by-step explanation:

(x^1/2 y^-1/4 z)^-2= x^(-1/2*2) y^(1/4*2) z^-2= x^-1 y^1/2 z^-2= y^1/2/xz^2

7 0
3 years ago
Choose all the important facts about the y-intercept. (multiple select - more than one answer is correct) The y-intercept tells
iogann1982 [59]

Answer:

Your answer should be C and D

Step-by-step explanation:

The y-intercept of the line is the value of y at the point where the line crosses the y axis.

5 0
3 years ago
If 8a+7b+c=9 then what is -6c-48a-42b
kati45 [8]

Your answer would be 6

5 0
3 years ago
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