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galben [10]
2 years ago
6

See image below. Answer both a and b correctly to get crowned.

Mathematics
1 answer:
Arturiano [62]2 years ago
8 0

Answer:

A. 74.62

B. 92.89

Step-by-step explanation:

Multiply the cost of US dollars by 0.72.

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A soup recipe calls for 1 and 1/4 lb of beans the package of beans is label 28 Oz is that enough
Rasek [7]
Yes. 1 and 1/4 lb is the same as 20oz (1lb=16oz), therefore your package is enough to cover the use of the soup recipe
7 0
3 years ago
At her birthday​ party, Ms. Willow would not give her age directly. She​ said, 'If you add the year of my birth to this​ year, s
Nimfa-mama [501]

Answer:

69 years

Step-by-step explanation:

Given that:

Let year of birth = x

This year = 2020

Year of 25th birthday = x + 25

Year of 55th birthday = x + 55

Present age = 2020 - x

Hence,

x + 2020 - (x + 25 + x + 55) + (2020 - x) = 58

x + 2020 - (2x + 80) + (2020 - x) = 58

x + 2020 - 2x - 80 + 2020 - x = 58

-2x + 4040 - 80 = 58

-2x + 3960 = 58

-2x = 58 - 3960

-2x = - 3902

x = 1951

Birth year = 1951

,

Hence, age =

2020 - 1951 = 69 years

5 0
3 years ago
A 41 gram sample of a substance that's used to detect explosives has a k-value of 0.1392. Find the substance's half life, in day
-BARSIC- [3]

Answer:

The substance half-life is of 4.98 days.

Step-by-step explanation:

Equation for an amount of a decaying substance:

The equation for the amount of a substance that decay exponentially has the following format:

A(t) = A(0)e^{-kt}

In which k is the decay rate, as a decimal.

k-value of 0.1392.

This means that:

A(t) = A(0)e^{-0.1392t}

Find the substance's half life, in days.

This is t for which A(t) = 0.5A(0). So

A(t) = A(0)e^{-0.1392t}

0.5A(0) = A(0)e^{-0.1392t}

e^{-0.1392t} = 0.5

\ln{e^{-0.1392t}} = \ln{0.5}

-0.1392t = \ln{0.5}

t = -\frac{\ln{0.5}}{0.1392}

t = 4.98

The substance half-life is of 4.98 days.

5 0
3 years ago
What is the percent increase of 40 to 65
Darya [45]

Answer:

percentage increase calculator, formula

Step-by-step explanation:

calculations to find what percent increase from, 40 to 66, 65%

4 0
3 years ago
Suppose we are flipping a fair coin (i.e., probability of heads = 0.5 and probability of tails = 0.5). further, suppose we consi
Feliz [49]
Here is your answer.

6 0
3 years ago
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