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8_murik_8 [283]
3 years ago
8

If rs = 23 - 2x st = 9x -5 and rt = 39 find rs

Mathematics
1 answer:
xxMikexx [17]3 years ago
6 0

Answer:

rs=17\ units

Step-by-step explanation:

we know that

rt=rs+st

we have

rt=39\ units

rs=(23-2x)\ units

st=(9x-5)\ units

substitute the given values and solve for x

39=(23-2x)+(9x-5)

39=(7x+18)

7x=39-18

7x=21

x=3

Find the value of rs

substitute the value of x

rs=23-2(3)=17\ units

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Nadusha1986 [10]

Answer:

1) 6 balls

Step-by-step explanation:

x = number of balls Elsa can shoot

x + 6 = number of balls Anna can shoot

18 = number of balls together they can shoot

x + (x + 6) = 18

x + x + 6 = 18

2x + 6 = 18

2x = 18 - 6

2x = 12

x = 6

2)2) 20x (3÷ 4)=90 120-90=30 thus left seat has 30 seating capacity.

3)Let x & y be packets of [a] type & [b] type detergent sold

Then 9x +7y =180

Let us say x=7

Then 9*7+7y =180

7y =180–63 = 117

y =117/7=19.2 this will not do as it contains decimal not whole number

Say x=6

Then 9*6 +7y =180

7y=180–54 =126

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Answer: 6 packets of (a) and 18 packets of type (b) were sold to get 180Php

4) 5,6,7 female piglets

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4 0
2 years ago
Read 2 more answers
A theater contains 460 seats and the ticket prices for a recent play were $52 for adults and $26 for children. If the total proc
Vlada [557]

Answer:

The answer to your question is There were sold 166 adult tickets and 294

                                                     children tickets.

Step-by-step explanation:

Data

Total number of seats = 460

cost for adults = a = $52

cost for children = c = $26

Total cost = $16276

Process

1.- Write equations to solve this problem

              a + c = 460                    Equation l

         52a + 26c = 16276             Equation ll

2.- Solve the system of equation by substitution.

-Solve equation l for a

             a = 460 - c

-Substitute a in equation ll

         52(460 - c) + 26c = 16276

-Expand

         23920 - 52c + 26c = 16276

-Simplify

                     -26c = 16276 - 23920

                     -26c = -7644

                          c= -7644/-26

                          c = 294

3.- Find a

                        a = 460 - 294

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8 0
3 years ago
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Simplify. x/4x+x^2
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if you're wondering about the restriction of x ≠ -4, is due to that would make the fraction with a denominator of 0 and thus undefined.

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Answer:

Graph D

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The analysis is that, at the time he decided to inflate the balloon till he got a pump, the volume of air in the balloon is zero with respect to time. Pumping air at a steady rate into the balloon increases the volume of air flowing into it gradually and steadily.

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3 years ago
The value of y is directly proportional to the value of x. If y = 35 when X = 140, what is the
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Answer:

17.5

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soln:

given,

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3 years ago
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