All categories

2 years ago

Lucy bought three books at a bookstore. Here are their prices (in dollars).

Mathematics

1 answer:

Valentin [98]2 years ago

8 0

Answer:

41.82$

Step-by-step explanation:

The prices are

7.58$, 16$, 18.24$.

To get the total of all what Lucy bought, You add the prices altogether.

That is,

18.24$

+16.00$

+07.58$

41.82$

The total amount of what Lucy bought is 41.82$

You might be interested in

it cost $270 for 3 people to go on a fishing trip how much does it cost for 10 people to go on a fishing trip

kolbaska11 [484]

I don't even know sorry but good luck

4 0

4 years ago

Read 2 more answers

Can someone help me please

Furkat [3]

Heisisjnw shsusnejjd snskiebebis sjisisoeo

4 0

3 years ago

What is the value of x? round to the nearest hundredths place: 0.45(x + 1.6) + 5x = 18

KatRina [158]

Answer:

3.600

Step-by-step explanation:

0.25(x+1.6)+5x=18

Open the bracket first

0.25x+0.72+5x=18

Collect like terms

0.25x+5x=18-0.72

5.25x=18.72

Divide both sides by 5.25

x=3.566~3.600(nearest hundredth)

8 0

3 years ago

Read 2 more answers

Martin had 100 trees in his orchard the first year. Each year after that, he

alexgriva [62]

Answer:

177

Step-by-step explanation:

This scenario can be modeled as an exponential function.

General form of an exponential function: $y=ab^x$

where:

a is the initial value (y-intercept)
b is the base (growth/decay factor) in decimal form
x is the independent variable
y is the dependent variable

If b > 1 then it is an increasing function

If 0 < b < 1 then it is a decreasing function

If the number of trees increase by 10% each year, then the number of trees each year will be 110% of the number of trees the previous year. Therefore, the growth factor is 110%.

Given:

a = 100 trees
b = 110% = 1.10 (in decimal form)
x = time (in years)
y = number of trees in the orchard

Substituting the given values into the function:

$\implies y=100(1.10)^x$

(where x is time in years and y is the number of trees in the orchard)

To find how many trees are in the orchard in the 6th year, input x = 6 into the found equation:

$\implies 100(1.10)^6=177.1561=177\: \sf (nearest\:whole\:number)$

Therefore, Martin had 177 trees in his orchard in the sixth year.

7 0

2 years ago

Read 2 more answers

The incubation time for hummingbird eggs is approximately normal and has a mean of 16 days and standard deviation of 2 days. Let

Veseljchak [2.6K]

Answer:

0.5328 = 53.28% probability that the length of hatching times is between 15 and 18 days.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 16 days and standard deviation of 2 days.

This means that $\mu = 16, \sigma = 2$