Mathematics, 01.08.2019 21:00 elizm0427

Leena consumes 400 cal at breakfast and 350 cal at lunch. she consumes 2/3 of her daily calories at dinner. if x represents the calories consumed at dinner, which statements describe the situation? check all that apply. lena consumed 1500 cal at dinner. do you equation 2/3 (x+400+350)=x can be used to model the situation. lena consumed 500 cal at dinner. lena consumed 1000 cal at dinner. the equation 2/3(x)=x(400+350) can be used to model the situation. the equation 2/3x(400+350)=x can’t be used to model the situation

Answers: 2

Show answers

Answers

1) Data:

Meal                calories consumed

Breakfast          400 cal
Lunch               350 cal
Dinner                x

Total                 400 + 350 + x = 750 + x

2) Equation:

She consumes 2/3 of her daily calories at dinner => (2/3)[750+x] = x

3) Analyze each statement:

a) Lena consumed 1500 cal at dinner.

Solve the equation to find if the statement is true:

(2/3)[750+x] = x

2(750+x) = 3x

1500 + 2x = 3x

1500 = 3x - 2x

x = 1500

Conclusión: TRUE stament.

b) Do you equation 2/3 (x+400+350)=x can be used to model the situation.

That is the same equation that I found above.

Conclusion: TRUE statement

c) Lena consumed 500 cal at dinner.

She consumed (2/3) * 1500 = 500 cal

Conclusion: TRUE statement

d) Lena consumed 1000 cal at dinner.

No, we calculated that she consumed 500 cal at dinner.

Conclusion: FALSE statement

e) The equation 2/3(x)=x(400+350) can be used to model the situation.

No: (2/3) x = 500 and x(400+350) = 500*750 = 375,00, which are not equal.

Conclusion: FALSE statement.

f) The equation 2/3x(400+350)=x Can’t be used to model the situation

No: in that equation the variable x cancels out because it appears a factor at both sides.

Conclusion: TRUE statement

Answer from: Quest

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?

Answer from: Quest

22, 28, 34, 40, 46

b) f(n) = 6n + 16

n = what is the number of the row ( 22 would be row 1) so if we replaced n with 1, we would get 22

c) the 14th row will have 100 seats

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)

22 | 28 | 34 | 40 | 46 | 52 | 58 | 64 | 70 | 76 | 82 | 88 | 94 | 100

Another question on Mathematics

Mathematics, 21.06.2019 17:30

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Answers: 1

Answer

Mathematics, 21.06.2019 21:00

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)

Answers: 1

Answer

Mathematics, 21.06.2019 21:00

How can (square root of 25) ^2 be rewritten?

Answers: 1

Answer

Mathematics, 21.06.2019 23:30

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.

Answers: 3

Answer

You know the right answer?

Leena consumes 400 cal at breakfast and 350 cal at lunch. she consumes 2/3 of her daily calories at...

Questions