Answer: no more than 250
Step-by-step explanation:
Answer less than 250
Step-by-step explanation:
6p + 3n = 18 and 2n = p
6(2n) + 3n = 18
12n + 3n = 18
15n = 18; n = $1.20
Onions cost $1.20 per pound.
Analyze the daughter’s solution. Which statements are true? Check all that apply.
The equation 2n = p should be 2p = n.
The equation 6p + 3n = 18 should be
6n + 3p = 18.
The actual cost of the onions is $3.00 per pound.
Potatoes cost $0.60 per pound.
Potatoes cost $1.50 per pound.
Potatoes cost $2.40 per pound.
Answer: The correct statements are 'The equation 2n = p should be 2p = n' , 'The actual cost of the onions is $3.00 per pound' and 'Potatoes cost $1.50 per pound.'
Step-by-step explanation:
Here, p represents cost of one potato and n represents the cost of one onion.
And, According to the question, He purchases 6 pounds of potatoes, p, and 3 pounds of onions, n, for $18.
Therefore, 6p +3n = 18 ------(1)
And, Onions cost twice as much as potatoes.
Therefore, n= 2p ---------(2)
Putting the values of n from 2) in equation 1),
we get, 6p+3(2p)=18
⇒6p+6p=18 ⇒ 12p =18 ⇒ p = 1.5 dollar.
Thus cost of one potato= $1.5
And cost of one onion = $ 2× 1.5= $ 3.00
Thus with help of above explanation we can say that Options first, third and fifth are correct.
Answer:
Step-by-step explanation:
1,3,5
The Equation of life expectancy is x- 0.4(2) = 80.2.
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given:
The life expectancy of a woman born in 1995 was 80.2 years.
The life expectancy increased 0.4 year every 5 years.
So, from 1995 to 2005 there are two times the life expectancy increase.
let the lifeexpectancy by x.
Thus, the equation is
x- 0.4(2) = 80.2
Learn more about Equation here:
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Answer:
a. L - 0.4(2)= 80.2 or L - 80.2 = 0.4(2) or 80.2 + 0.4(2) = L
b. No; The equations must be equivalent. They may look different, but all equations can be rewritten as L= 80.2 + 0.4(2).
Step-by-step explanation: