Steps to solve:
10.2x + 9.4y when x = 2 and y = 3
= 10.2(2) + 9.4(3)
= 20.4 + 28.2
= 48.6
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Answer:
48.6 is the answer
Step-by-step explanation:
Okay, first you plug in the variables x and y .
So now the new equation is 10.2x2 this is ,because everytime a number get put next to another number you multiply. So .....
(10.2x2) + (9.4x3)=
20.4+28.2=
48.6
B. 23-s >5
C. 5D. s ≤23+5
The inequality is 23-s≥5 so, option A is correct.
Inequality is the relationship between two expressions such that those expressions are not equal.
A person spend $s on the food. Determine the amount left for the dessert.
23-s
The amount left should be greater than or equal to $5 so that a person can purchase dessert.
23-s≥5
Thus, the inequality represents the given situation is 23-s≥5.
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Answer:
Option A .
Step-by-step Explanation:
Since dessert is $5, you can spend ____.
$23-$5=$18
The amount of money he can spend before dessert is s.
Since he needs enough money left for dessert, when he uses samount of money from his $23, he should have $5 or more left.
Therefore,
23-smore than or equals to 5.
Answer :
Option A.
You can use system of linear equations to find the solution.
The cost to customer to buy 5 tulips and 6 roses will be $17.75
Cost of buying 5 tulips and 6 roses.
By given data, we have:
7 tulip + 9 roses costs $25.90
or
And
4 tulips + 8 roses costs $19.8
or
Thus, we have two equations.
From equation first, we have:
Substituting this value in second equation, we get:
Thus, we have:
Thus, the price of a tulip = x = $1.45
and the price of a rose = y = $1.75
Now, calculating price of 5 tulips and 6 roses:
Thus, the cost to a customer who buys 5 tulips and 6 roses would be $17.75
Learn more about system of linearequations here:
It will cost a customer $17.75 to buy 5 tulips and 6 roses.
Step-by-step explanation:
Let,
Cost of one tulip = x
Cost of one rose = y
According to given statement;
7x+9y=25.90 Eqn 1
4x+8y=19.80 Eqn 2
Multiplying Eqn 1 by 4
Multiplying Eqn 2 by 7
Subtracting Eqn 3 from Eqn 4
Dividing both sides by 20
Putting y=1.75 in Eqn 1
Dividing both sides by 7
Cost of 5 tulips and 6 roses = 5x+6y = 5(1.45)+6(1.75) = 7.25+10.50 = $17.75
It will cost a customer $17.75 to buy 5 tulips and 6 roses.
Keywords: linear equation, elimination method
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