MATHEMATICS HIGH SCHOOL

(6 + 3)2 – 7.2 + 8
answer and work!

Answers

Answer 1
Answer:

Answer:

18.8

Step-by-step explanation:

Remember PEMDAS!

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This figure is a regular 12 sided polygon. find measure of angle 3
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Solve the following equation: (y - 2) - (y + 1) = (y - 3) - 2
Abcd is a rectangle. Find the length of each diagonal. .AC= 3y/5 BD=3y-4

Which equation is equivalent to 4.5 = 2a?

Answers

2a = 4.5    |divide both sides by 2

a = 2.25

Answer:

a = 2.25

Step-by-step explanation:

Gilda walks to the train station. If she walks at the rate of 3 mph, she misses her train by 7 minutes. However, if she walks at the rate of 4 mph, she reaches the station 5 minutes before the arrival of the train. Find the distance Gilda walks to the station.David knew he made a mistake when he calculated that Gilda walks 123 miles to the station. Read through David's calculations:Using d = rt, the distance is the same, but the rate and time are different.If Gilda misses the train, it means the time t needs 7 more minutes so d = 3(t + 7).If she gets to the station 5 minutes early means the time t can be 5 minutes less so d = 4(t - 5).3(t + 7) = 4(t - 5)3t + 21 = 4t - 20t = 41d = rt, so d = 3(41) = 123Find David's mistake in his calculations. In two or more complete sentences, explain his mistake. Include the correct calculations and solutions in your answer.

Answers

We'll represent the distance as d and the time as t. 
d= 3(t+7)            because Gilda is 7 minutes late when travelling 3 mph
d= 4(t-5)             because Gilda is 5 minutes early at 4 mph

d= 3t + 21
d= 4t -20
3t +21 =4t -20
41=t
d= 3(41) +21= 144
The distance is 144 miles. 
d=3(t + 7)\ \ \ if\ Gilda\ walks\ of\ 3mph\n.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ she\ is\ 7\ minutes\ after\ departure\ of\ the\ train\n\n d= 4(t - 5)\ \ \ if\ Gilda\ walks\ of\ 4mph\ \n.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ she\ is\ 5\ minutes\ before\ the\ train\ \n\n3(t+7)=4(t-5)\n\n3t + 21 = 4t - 20 \n\nt = 41\ \ \ \Rightarrow\ \ \ d=3(t+7)=3\cdot(41+7)=3\cdot48=144\n\nAns.\ The\ distance\ to\ the\ station\ is\ 144\ miles.

Someone do this thanks

Answers

Answer:

2

Step-by-step explanation:

12-2= m(2+3)

m= 10/5=2

A security system sales manager conducts a survey that includes this question. Pick the best description of this survey question.Due to the recent increase in burglaries, how likely are you to install our security system?


A. The survey question is worded in a way that doesn’t introduce bias.


B. It should be reworded as a “yes or no” question to avoid bias.


C. This is a sensitive question because it relates to privacy and security.


D. It influences the respondent to say they are likely to install the security system.

Answers

Answer:

D. It influences the respondent to say they are likely to install the security system.

Step-by-step explanation:

Mentioning the recent influx of burglaries is a tactic to scare people into installing their security system.

A store sells school bags for $17.10 each. At what price should the store sell each bag, if the price needs to be marked up by 30%? (Add the markup to the price the store sells the bags for.) *

Answers

The store should sell each bag for $22.23 after a 30% markup.

Here, we have to find the price at which the store should sell each bag with a 30% markup, we'll first calculate the markup amount and then add it to the original price.

We have to, calculate the markup amount.

Markup amount = 30% of the original price

Markup amount = 30/100 * $17.10

Markup amount = $5.13

Add the markup to the original price.

Selling price = Original price + Markup amount

Selling price = $17.10 + $5.13

Selling price = $22.23

So, the store should sell each bag for $22.23 after a 30% markup.

To learn more on percentage click:

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Answer:

22.20

Step-by-step explanation:

17.10/10

1.710x3

5.1+17.10

22.20

you invest $1,500 today in a bank that gives you a 5 percent annual interest rate, which of these items can you buy in two years?

Answers

1500 (1+5%)^2 = $1653.75

Answer:1650

Step-by-step explanation:
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