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saw5 [17]
3 years ago
9

Here are 2 math promblems please help

Mathematics
1 answer:
Verizon [17]3 years ago
3 0

3. The original price of the trampoline is $72

The marked off price is 72 times 70 percent.

72 x .70 = 50.4

The sales tax is 5%

50.4 + 50.4 x 0.05

50.4 + 2.52

52.92

He paid $52.92 in total.


4. A store bought a leaf blower for $48.50 and marked it up 100%

This cost would be 48.5 x 2 which is $97

The sales tax is 6%

97 + 97 x 0.06

97 + 5.82

102.82

The total cost was $102.82

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The total amount of money (in cents) in x dimes, (x+4) nickels, and 3x quarters
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Answer:

Step-by-step explanation:

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3 years ago
Thomas needed a loan to buy a car. He borrowed $24,000 from the bank at a rate of 8.25% simple interest for 36 months. What was
Leya [2.2K]

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5,940.00

Step-by-step explanation:

Well its was really simple your welcome

8 0
3 years ago
Assume that emergency medical personnel in California are planning for future resources and it has been observed that the averag
larisa [96]

Answer:

Answer is 0.5

Step-by-step explanation:

The text implies that the number of traffic accidents determines the number of ambulances required on the road. Hence, 1 traffic accident requires 1 ambulance.

The time slot and time of day remain same in both the text and the question.

The average or mean number of accidents is 1.1

QUESTION: What then is the probability that there is need for exactly 2 ambulances on that road and in that time frame?

In other words, what is the probability that there'll be 2 accidents on that road and in that time frame?

Since the mean number of accidents is 1.1,  2 is above the mean.

Probability of 1.1 accidents is 1, since that's the mean (expected value).

Probability of 2 accidents is 1/2 which is = 0.5

4 0
3 years ago
If 1-cosA = 1/2 , Then find the value of sinA.
zimovet [89]

Step-by-step explanation:

Given :

1- cosA = 1/2

or, CosA = 1 -1/2

Therefore ; CosA = 1/2 = b/h

According to the Pythagoras theorem,

P = root under h^2 - b^2

= root under (2)^2 - (1)^2

= root under 4 -1

= root 3

Again,

SinA = P/h

= root 3 / 2

8 0
2 years ago
A scientist is growing bacteria in a lab for study. One particular type of bacteria grows at a rate of y=2t^2+3t+500. A differen
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Approximately after 15 minutes.

EXPLANATION

The growth rate of the first bacteria is

y = 2 {t}^{2}   + 3t + 500

The growth rate of the first bacteria :

y = 3 {t}^{2}  + t + 300

To find the time that, there will be an equal number of bacteria, we equate the two equation;

3 {t}^{2}  + t + 300 = 2 {t}^{2}   + 3t + 500

3 {t}^{2}  - 2 {t}^{2}   + t  - 3t +  300 - 500 =00

{t}^{2}  - 2t  - 200= 0

We solve for t to get,

t = 15.177

Or

t =  - 13.177

We discard the negative value.

This implies that,

t \approx15

8 0
3 years ago
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