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hodyreva [135]
3 years ago
5

The first one I need help with that one

Mathematics
1 answer:
SVEN [57.7K]3 years ago
7 0

Answer:

5% Sales tax is $3.375 and total amount is $70.875. I don't know if they want u to simplify or not so I'll leave the answer this way just incase.

Step-by-step explanation:

You do cross multiplication.

1. ?/67.50 = 5/100

2.  then you cross multiply 67.50 x 5 = 337.5

3. Divide 337.5 by 100 = 3.375

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A submarine was situated 800 feet below sea level. If it ascends 250 feet, what is its new position?**
Ivahew [28]
Answer:
The new position of submarine is 550 feet below the sea level.
Given:
A submarine is located at 800 feet below sea level (i.e) if x is considered as the sea level, then it is located at x - 800. The submarine ascends 250 feet, (i.e) its new position is increased by 250 feet from its previous position, then its new position becomes 800 - 250 = 550 feet. Hence the new position of submarine is located at 550 feet below sea level, x.
6 0
4 years ago
Read 2 more answers
Bonus Problem. Write equations of the following lines.
Lilit [14]

Answer: y= 2x  -1

Step-by-step explanation:

Parallel lines have the same slopes but different y-intercepts. In this case, we will just need to find the y-intercept for the line that is parallel to y=2x - 4.

To find the y intercept, we will need the point (1,1) by plotting in the x and y coordinate into the y intercept formula y=mx +b.  m is the slope which will be 2 and b will be the y-intercept.

1 = 2(1) + b  

1 = 2 + b    

-2  -2

b = -1  

  The equation will be y= 2x  -1

5 0
3 years ago
Jonah had 3/4 cup of water in his cup. He drank 1/2 cup of water. How
Lostsunrise [7]

Answer:

1/4th Cup left

Step-by-step explanation:

1/2 cup is equal to 2/4 cup, so subtract that from 3/4th and you end with 1/4th

5 0
3 years ago
(ii) The value V of a Porsche 718 Cayman that is tyears old can be modeled by
Elena L [17]

Answer:

Part A: What would be worth the car's worth in 2 years?

<u>V(2) = $ 391,114.50 </u>

Part B. In how many years will the car be worth $325,000?​

<u>t = 7.2 years (rounding to the next tenth) or approximately 7 years, 2 months and 12 days</u>

Step-by-step explanation:

Part A: What would be worth the car's worth in 2 years?

If V(t) = 420,000(0.965) ^t, therefore:

V(2) = 420,000(0.965)²

V(2) = 420,000 * 0.931225

<u>V(2) = $ 391,114.50 </u>

Part B. In how many years will the car be worth $325,000?​

If V(t) = 420,000(0.965) ^t, therefore:

325,000 = 420,000(0.965) ^t

325,000/420,000 = (0.965) ^t

0.7738 = 0.965^t

t = log 0.965(0.7738)

t = log 0.7738/log 0.965

t = 7.2 years (rounding to the next tenth) or approximately 7 years, 2 months and 12 days

0.2 years = 0.2 * 12 = 2.4 months

4 0
3 years ago
What is the reciprocal of the number -3/5 ?
vovikov84 [41]
A reciprocal is when you switch the numerator and denominator of a number. So, the answer is 5/-3
8 0
3 years ago
Read 2 more answers
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