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cluponka [151]
3 years ago
6

A secret recipe requires you mix chocolate and cream cheese in the ratio 3:2, based on weight. If you use 21 oz of chocolate, ho

w much cream cheese do you need?
Mathematics
1 answer:
Alexus [3.1K]3 years ago
3 0

Answer: 14 oz

Step-by-step explanation:

CH/CR 3:2

3x/3=21/3

x=7

2*7=14 oz.

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Christopher is a graphic designer who creates business websites. It takes him 2.4 hours to complete one website page. He finds o
ziro4ka [17]

Christopher needs to create so that his time spent will be the same as his current time, the equation could be: 2.4x = 1.2x + 15

4 0
4 years ago
The temperature of a cup of coffee varies according to Newton's Law of Cooling: dT dt equals negative k times the quantity T min
Maslowich

Answer:

67.3°C

Step-by-step explanation:

A = 25, T(0) = 100, T(1) = 90, find T(4)

dT/dt = -k(T - A)

d(T - A)/dt = -k(T - A)

d(T - A)/(T - A) = -k dt

ln(T - A) = lnC - kt

T(t) -A=Ce^{-kt}\\T(t) = A + Ce^{-kt} = 25 + Ce^{-kt}\\T(0) = 25 + C = 100\\C=75

T(t) = 25 + 75e^{-kt}\\T(1) = 25 + 75e^{-k} = 90\\75e^{-k} = 65\\e^{-k} = \frac{65}{75}, k = ln\frac{75}{65} = 0.1431\\T(t) = 25+75e^{-0.1431t}\\T(4) = 25+75e^{-0.1431\times4} = 67.3

4 0
3 years ago
The graph shows the weight of a jar when filled with different numbers of marbles.
irakobra [83]

Answer:

B

Step-by-step explanation:

The weight of the jar depends on the number of marbles in it, therefore the weight is the dependent variable (y) and the number of marbles is the independent variable (x). The y-intercept is when x = 0 and since the number of marbles is x, the answer is that the y-intercept represents the weight of the jar without the marbles.

6 0
3 years ago
What is -0.519760524 rounded to four decimal places?
Rasek [7]

Answer:

search it up

Step-by-step explanation:

I need poınts

5 0
3 years ago
I need this please help me
vesna_86 [32]
I believe it's c. it's the only reasonable answer.
6 0
3 years ago
Read 2 more answers
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