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trapecia [35]
3 years ago
10

Solving a System of Linear Equations - Applications - Item 92238

Mathematics
1 answer:
Viktor [21]3 years ago
7 0

Answer:

$132

Step-by-step explanation:

1) In this system of eqn x represents the price of washing cars and y represents the price of washing SUVs

2) From the given eqn,

y = (84 - 4x)/2

and

y = (126 - 3x)/5

equating both the equation,

(84 - 4x)/2 = (126 - 3x)/5

=> 210 - 10x = 126 - 3x

=> 7x = 84

=> x = 12

=> y = (84 - 48)/2 = 18

Hence the co-ordinate of intersection will be (12,18)

3) The total cost of 1 car and 1 suv = x + y = 12 + 18 = $ 30

4) The total earning of hour 3

= 5x + 4y

= 5.12 + 4.18

= 60 + 72

= $ 132

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Is compound interest always greater than simple interest ?Give examples
g100num [7]
Yes compund interest is always greater than simple interest 

simple interest = principal

compound interest = principal + accumulated interest
3 0
3 years ago
Jay King, owner of a local Bed and Bath Store knows that his customers will only pay at most, $299 for a blow up bed. Assuming J
Roman55 [17]
If you would like to know the price Jay can pay the manufacturer for the blow up bed, you can calculate this using the following steps:

100% + 40% = 140%

140% of x is $299
140% * x = 299
140/100 * x = 299      /*100/140
x = 299 * 100 / 140
x = $213.6

40% of $213.6 = 40% * 213.6 = 40/100 * 213.6 = 85.44
$213.6 + $85.44 = $299

The correct result would be $213.6.
6 0
3 years ago
I have inserted the image below. This is a test so I would like the most correct answers and working out if possible
Georgia [21]

Answer: 3 * n = 15

5 students tried out for the baseball team.

Step-by-step explanation:

n is the amount of kids who tried to try out for the baseball team.

15 kids tried out for the hockey team, and that’s 3 times as many as the amount who tried out for the baseball team, so 3 times n = 15, or 3 * 5 =15

hope this helped!

7 0
3 years ago
Read 2 more answers
The ratio of the weight of wood to the weight of raw materials used by a factory is 16 : 56. How many tons of wood wouod the fac
Goshia [24]

Answer:

2 Tons Wood

Step-by-step explanation:

According To Question,

Given,the ratio of the weight of wood to the weight of raw materials used by a factory is 16 : 56 or 2 : 7 .

And, Factory were to use 7 tons of raw materials .

Thus, if 56 ⇒⇒ 7Tons of Raw Material

So,

16⇒⇒2 Tons of Wood Material .

7 0
3 years ago
Bara has 21.30. Dara has$8 more than 4 times Barry. How much money does Dara have?
mr_godi [17]
21.30•4=85.20
85.20+8=93.20
Answer=Dara has $93.20
8 0
3 years ago
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