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scoundrel [369]
3 years ago
15

What is the inverse of the given relation? Y=7x^2+4

Mathematics
1 answer:
EleoNora [17]3 years ago
7 0

follow these steps:

1) y-4=7x^2

2) (y-4)/7 = x^2

x = \sqrt{ \frac{y - 4}{7} }

so you must inverse x and y names:

{f}^{ - 1} (x) = \sqrt{ \frac{x - 4}{7} }

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Find the new amount. explain <br><br><br>200 books; 75% decrease <br><br>160 bananas; 20% decrease
prohojiy [21]

Answer:

75% of 200 = 50; 20% of 160 = 128

Step-by-step explanation:

200 (0.75) = 150

200 - 150 = 50

160 (0.20) = 32

160 - 32 = 128

8 0
3 years ago
1. -3 2/5 + b = 8 1/5<br><br><br>2. -7/3 n = -42<br><br>PLZ HELP ASAP I WILL MARK BRAINLIEST
diamong [38]
1. Convert the mixed numbers into improper numbers (-3 2/5 = -17/5 and 8 1/5 = 41/5). Then add 17/5 to both sides when means b=58/5

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3 years ago
TIMED TEST PLEASE HELP
xxMikexx [17]
1 ) first offer
total payments
375.76×12×4
=18,036.48
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18,036.48−16,000
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=18,749.28
Interest paid
18,749.28−16,000
=2,749.28
Larry will save of taking 6% loan
2,749.28−2,036.48=712.8. .answer

2) credit card 1
Total payments
277.09×12
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Interest paid
3,325.08−3,000
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Credit card 2
Total payments
152.69×12×2
=3,664.56
Interest paid
3,664.56−3,000
=664.56
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664.56−325.08
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Hope it helps!
6 0
3 years ago
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Which types of triangles can be formed by taking the cross-section of a rectangular prism like the one shown above?
Sonja [21]

Answer:

A.

Step-by-step explanation:

4 0
3 years ago
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Marie wants to purchase a car and finance her purchase with a 4 year loan at 7% interest. If she wants her payments to be $250 p
saveliy_v [14]

Answer:

F = $13,802.31

she can finance $13,802.31 with this loan.

Step-by-step explanation:

Given;

Rate r = 7% = 0.07

Time t = 4 years

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Number of months per year n = 12

This can be solved using compound interest for future value series formula;

F = future value

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Substituting the given values, we have;

F = $250(((1 + 0.07/12)^(12×4) - 1)/(0.07/12))

F = $13,802.31

4 0
3 years ago
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